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Daily HHS Accessibility Report — 2026-04-04

Run ID: run-2026-04-04-38379c06e4 · Status: partial · Source data: 2026-04-02 · Generated: 2026-04-04T09:28:16.887Z

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About These Reports

U.S. federal government website traffic data is publicly available at analytics.usa.gov, powered by the Digital Analytics Program (DAP) — a shared analytics service that tracks traffic across hundreds of participating federal agencies and publishes the data openly. This report focuses on the U.S. Department of Health and Human Services (HHS) and its sub-agencies, using HHS-specific traffic data from analytics.usa.gov/health-human-services.

This report measures the quality and accessibility of the top 100 most-visited HHS URLs as reported by analytics.usa.gov. Each day, Lighthouse scans are run against these URLs to measure:

Accessibility findings come from axe-core, the industry-standard accessibility testing engine embedded in Lighthouse. The axe findings surface specific WCAG violations such as missing alternative text, insufficient color contrast, and missing form labels that make government websites harder to use for people with disabilities.

Traffic data reflects daily visitor counts from analytics.usa.gov for HHS properties. URLs are ranked by page load count, ensuring the most-used HHS pages are prioritized for quality measurement.

Accessibility Trend Narrative

Over the past 2 days of data (2026-04-03 to 2026-04-04), government website accessibility scores have improved (+4.96 points, from 87.31 to 92.27). Performance scores have declined (-5.87 points, from 62 to 56.13).

Today's aggregate accessibility score of 91.74 reflects the mean Lighthouse accessibility score across 147 successfully scanned government URLs. A score above 90 indicates generally strong compliance with WCAG automated checks, though manual testing is always recommended to fully assess accessibility.

Comparison with 1-Day Average

Score comparison between 2026-04-04 and the 1-day average
Metric 2026-04-04 1-day avg Change
Performance55.8262-6.18
Accessibility91.7487.31+4.43
Best Practices91.1989+2.19
SEO88.4388.45-0.02

See the full score trend in the History section below.

Common Accessibility Issues (Top 10)

The following axe-core rules were most frequently violated across scanned URLs today. These patterns indicate systemic accessibility barriers present across multiple government websites.

Total axe findings today: 265 across 160 scanned URLs.

Top axe-core accessibility rule violations across scanned URLs
Rule ID Description URLs affected Disabilities Affected (hover/focus icons for estimated impact)
target-sizeTouch targets do not have sufficient size or spacing.39Affected sites: ncbi.nlm.nih.gov, medlineplus.gov, blast.ncbi.nlm.nih.gov, dailymed.nlm.nih.gov, acf.gov, openi.nlm.nih.gov, www.ncbi.nlm.nih.gov, wonder.cdc.gov, datadashboard.fda.gov, lhncbc.nlm.nih.gov, ncbiinsights.ncbi.nlm.nih.gov, nhlbi.nih.gov, mor.nlm.nih.gov, catalog.nlm.nih.gov, preview.ncbi.nlm.nih.gov, jats.nlm.nih.gov, selectagents.gov, animaldrugsatfda.fda.gov, nationaldppcsc.cdc.gov, ncsacw.acf.gov, labels.fda.gov, classification.nlm.nih.gov, cde.nlm.nih.gov, learn.nlm.nih.gov, nccih.nih.gov, www.access.fda.gov, niaaa.nih.gov, nichd.nih.gov, hivrisk.cdc.gov, reporter.nih.gov, cdrh-rst.fda.gov, medicineonscreen.nlm.nih.gov, clinicaltables.nlm.nih.gov, documentation.uts.nlm.nih.gov, places.cdc.gov, nigms.nih.gov, ntp.niehs.nih.gov, indexcat.nlm.nih.gov, report.nih.govPeople with limited hand, finger, or fine motor dexterity. Estimated ~108,883 people potentially excluded (2.2% prevalence × 4,949,205 affected page loads) People with limited reach, strength, or stamina. Estimated ~287,054 people potentially excluded (5.8% prevalence × 4,949,205 affected page loads)
landmark-one-mainDocument does not have a main landmark.37Affected sites: ncbi.nlm.nih.gov, medlineplus.gov, blast.ncbi.nlm.nih.gov, dailymed.nlm.nih.gov, openi.nlm.nih.gov, support.nlm.nih.gov, register.clinicaltrials.gov, direct.fda.gov, www.ncbi.nlm.nih.gov, meshb.nlm.nih.gov, id.nlm.nih.gov, trace.ncbi.nlm.nih.gov, lhncbc.nlm.nih.gov, mor.nlm.nih.gov, findingaids.nlm.nih.gov, nimh.nih.gov, jats.nlm.nih.gov, meshb-prev.nlm.nih.gov, animaldrugsatfda.fda.gov, ncsacw.acf.gov, labels.fda.gov, nfr.cdc.gov, rarediseases.info.nih.gov, gudid.fda.gov, imagic.nlm.nih.gov, pids.cdc.gov, www.access.fda.gov, hivrisk.cdc.gov, art.cdc.gov, reporter.nih.gov, clinicaltables.nlm.nih.gov, documentation.uts.nlm.nih.gov, hfp-onlinesubmissions.fda.gov, www.accessdata.fda.gov, prstest.clinicaltrials.gov, mvps.cdc.gov, report.nih.govPeople who are blind or have no functional vision. Estimated ~49,445 people potentially excluded (1.0% prevalence × 4,944,472 affected page loads) People who are deaf and cannot hear audio content. Estimated ~14,833 people potentially excluded (0.3% prevalence × 4,944,472 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~108,778 people potentially excluded (2.2% prevalence × 4,944,472 affected page loads)
heading-orderHeading elements are not in a sequentially-descending order28Affected sites: fda.gov, support.nlm.nih.gov, magazine.medlineplus.gov, id.nlm.nih.gov, datadashboard.fda.gov, tools.cdc.gov, collections.nlm.nih.gov, lhncbc.nlm.nih.gov, ncbiinsights.ncbi.nlm.nih.gov, fdanj.nlm.nih.gov, mor.nlm.nih.gov, nimh.nih.gov, datasetcatalog.nlm.nih.gov, thecommunityguide.org, nida.nih.gov, rarediseases.info.nih.gov, grants.nih.gov, pids.cdc.gov, niaaa.nih.gov, nlmdirector.nlm.nih.gov, datadiscovery.nlm.nih.gov, cdrh-rst.fda.gov, documentation.uts.nlm.nih.gov, heart-stroke-atlas.cdc.gov, ntp.niehs.nih.gov, mvps.cdc.gov, nibib.nih.gov, report.nih.govPeople who are blind or have no functional vision. Estimated ~3,882 people potentially excluded (1.0% prevalence × 388,192 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1,165 people potentially excluded (0.3% prevalence × 388,192 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~8,540 people potentially excluded (2.2% prevalence × 388,192 affected page loads)
color-contrastBackground and foreground colors do not have a sufficient contrast ratio.27Affected sites: ncbi.nlm.nih.gov, clinicaltrials.gov, blast.ncbi.nlm.nih.gov, dailymed.nlm.nih.gov, openi.nlm.nih.gov, support.nlm.nih.gov, direct.fda.gov, www.ncbi.nlm.nih.gov, meshb.nlm.nih.gov, id.nlm.nih.gov, trace.ncbi.nlm.nih.gov, lhncbc.nlm.nih.gov, dbgap.ncbi.nlm.nih.gov, datasetcatalog.nlm.nih.gov, preview.ncbi.nlm.nih.gov, jats.nlm.nih.gov, meshb-prev.nlm.nih.gov, learn.nlm.nih.gov, nccih.nih.gov, pids.cdc.gov, hivrisk.cdc.gov, datadiscovery.nlm.nih.gov, poca-public.fda.gov, reporter.nih.gov, medicineonscreen.nlm.nih.gov, www.clinicaltrials.gov, formbuilder.nlm.nih.govPeople with low vision who need magnification or high contrast. Estimated ~111,396 people potentially excluded (2.4% prevalence × 4,641,517 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~199,585 people potentially excluded (4.3% prevalence × 4,641,517 affected page loads)
link-nameLinks do not have a discernible name20Affected sites: cdc.gov, wwwnc.cdc.gov, openi.nlm.nih.gov, purplebooksearch.fda.gov, search.cdc.gov, magazine.medlineplus.gov, www.cdc.gov, precision.fda.gov, profiles.nlm.nih.gov, datasetcatalog.nlm.nih.gov, labels.fda.gov, nccih.nih.gov, pids.cdc.gov, hivrisk.cdc.gov, nlmdirector.nlm.nih.gov, reporter.nih.gov, medicineonscreen.nlm.nih.gov, mvps.cdc.gov, nibib.nih.gov, report.nih.govPeople who are blind or have no functional vision. Estimated ~7,858 people potentially excluded (1.0% prevalence × 785,839 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2,358 people potentially excluded (0.3% prevalence × 785,839 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~17,288 people potentially excluded (2.2% prevalence × 785,839 affected page loads)
link-in-text-blockLinks rely on color to be distinguishable.14Affected sites: nih.gov, id.nlm.nih.gov, docline.gov, tools.cdc.gov, fdanj.nlm.nih.gov, catalog.nlm.nih.gov, nimh.nih.gov, millionhearts.hhs.gov, labels.fda.gov, www.access.fda.gov, datadiscovery.nlm.nih.gov, cdrh-rst.fda.gov, clinicaltables.nlm.nih.gov, formbuilder.nlm.nih.govPeople with low vision who need magnification or high contrast. Estimated ~2,874 people potentially excluded (2.4% prevalence × 119,769 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~5,150 people potentially excluded (4.3% prevalence × 119,769 affected page loads)
skip-linkSkip links are not focusable.11Affected sites: cdc.gov, blast.ncbi.nlm.nih.gov, wwwnc.cdc.gov, search.cdc.gov, www.cdc.gov, wisqars.cdc.gov, labels.fda.gov, classification.nlm.nih.gov, pids.cdc.gov, art.cdc.gov, mvps.cdc.govPeople who are blind or have no functional vision. Estimated ~8,177 people potentially excluded (1.0% prevalence × 817,693 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2,453 people potentially excluded (0.3% prevalence × 817,693 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~17,989 people potentially excluded (2.2% prevalence × 817,693 affected page loads)
tabindexSome elements have a `[tabindex]` value greater than 011Affected sites: cdc.gov, fda.gov, wwwnc.cdc.gov, search.cdc.gov, direct.fda.gov, magazine.medlineplus.gov, www.cdc.gov, labels.fda.gov, www.access.fda.gov, hivrisk.cdc.gov, heart-stroke-atlas.cdc.govPeople who are blind or have no functional vision. Estimated ~10,915 people potentially excluded (1.0% prevalence × 1,091,502 affected page loads) People who are deaf and cannot hear audio content. Estimated ~3,275 people potentially excluded (0.3% prevalence × 1,091,502 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~24,013 people potentially excluded (2.2% prevalence × 1,091,502 affected page loads)
button-nameButtons do not have an accessible name11Affected sites: cms.gov, support.nlm.nih.gov, wonder.cdc.gov, precision.fda.gov, mor.nlm.nih.gov, circulatingnow.nlm.nih.gov, selectagents.gov, hivrisk.cdc.gov, reporter.nih.gov, medicineonscreen.nlm.nih.gov, indexcat.nlm.nih.govPeople who are blind or have no functional vision. Estimated ~4,572 people potentially excluded (1.0% prevalence × 457,173 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1,372 people potentially excluded (0.3% prevalence × 457,173 affected page loads)
label-content-name-mismatchElements with visible text labels do not have matching accessible names.10Affected sites: clinicaltrials.gov, atsdr.cdc.gov, ndc.services.cdc.gov, ncsacw.acf.gov, rarediseases.info.nih.gov, youthonline.cdc.gov, niaaa.nih.gov, nlmdirector.nlm.nih.gov, www.clinicaltrials.gov, nidcr.nih.govPeople who are blind or have no functional vision. Estimated ~2,207 people potentially excluded (1.0% prevalence × 220,704 affected page loads) People with low vision who need magnification or high contrast. Estimated ~5,297 people potentially excluded (2.4% prevalence × 220,704 affected page loads) People who are deaf and cannot hear audio content. Estimated ~662 people potentially excluded (0.3% prevalence × 220,704 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~4,855 people potentially excluded (2.2% prevalence × 220,704 affected page loads)
Human impact narratives for top issues

The following narratives describe the real-world impact of each accessibility barrier on people with disabilities. These barriers are not abstract technical failures; they prevent citizens from independently accessing government services.

target-size: Digital Motor Access

Small touch targets act as a digital gatekeeper, excluding individuals with tremors, arthritis, or limited dexterity from accessing essential services independently. These technical failures transform a routine interaction into a source of failure, stripping away the autonomy of citizens who require a frictionless, accessible interface to participate in digital life. The approximately 58 million Americans with ambulatory or self-care disabilities are disproportionately impacted by inadequate touch target sizing on government mobile websites.

Affected groups:

  • People with Parkinson's disease, arthritis, or hand tremors
  • Older adults with reduced fine motor control
  • People with motor disabilities using alternative pointing devices
  • People in situational impairment contexts (e.g., commuting, holding a child)

landmark-one-main: Primary Content Identification

Without a main landmark, screen reader users lose their most efficient way to skip to the primary content of a government page. Every page visit requires tabbing through the entire navigation structure to reach the actual content, a significant time and effort burden that accumulates across repeated visits to government websites for citizens managing ongoing benefit cases or legal matters.

Affected groups:

  • People who are blind using screen readers
  • People who are deaf and rely on visual-to-text tools
  • People with motor disabilities using keyboard navigation

heading-order: Document Structure Navigation

Screen reader users navigate complex government websites primarily through heading structure, using headings as a table of contents to jump between sections. Skipped heading levels break the logical document outline, causing confusion about the hierarchy of information and forcing users to re-read sections to understand the relationship between topics, adding significant time and effort to information-gathering tasks.

Affected groups:

  • People who are blind using screen readers
  • People who are deaf and rely on visual-to-text tools
  • People with motor disabilities using keyboard navigation

color-contrast: Visual Information Access

Low contrast text is one of the most pervasive barriers on government websites, rendering critical information invisible to the approximately 26 million Americans with low vision or color blindness. When agency announcements, form instructions, error messages, or legal notices are displayed in insufficient contrast, affected citizens are denied equal access to the information they need to exercise their rights and access public services.

Affected groups:

  • People with low vision including age-related vision loss
  • People who are color blind (approximately 8% of men, 0.5% of women)

link-name: Link Purpose Clarity

Links without accessible names are completely useless to screen reader users who navigate government pages by jumping between links. An unnamed link could lead anywhere, and activating it unknowingly could trigger downloads, open unexpected pages, or initiate unintended processes. On government websites, unnamed links undermine the informed consent principle by preventing citizens from knowing where a link will take them.

Affected groups:

  • People who are blind using screen readers
  • People who are deaf and rely on visual-to-text tools
  • People with motor disabilities using keyboard navigation

link-in-text-block: Color-Independent Link Identification

When links are distinguished only by color, people with color vision deficiency cannot identify them as links and may miss critical references to additional information, forms, or resources. On government websites, overlooked links in informational content can mean missing essential instructions, deadlines, or procedures that affect a citizen's ability to access services or comply with requirements.

Affected groups:

  • People with low vision who may not perceive color differences
  • People who are color blind (approximately 8% of men, 0.5% of women)

skip-link: Skip Link Functional Effectiveness

A skip link that points to a non-existent or non-focusable target provides no actual benefit and may confuse keyboard users who activate it and experience no apparent result. For screen reader and keyboard users on government websites with extensive navigation, a broken skip link means they must navigate through the entire repeated header every time, negating the accessibility feature entirely and creating a cruel illusion of accessibility that does not function.

Affected groups:

  • People who are blind using screen readers
  • People who are deaf using keyboard-only navigation
  • People with motor disabilities using keyboard navigation

tabindex: Focus Order Predictability

Positive tabindex values create unpredictable focus sequences that jump around the page in ways that differ from the visual reading order. For keyboard users and screen reader users on government websites, an erratic tab order makes it difficult to reliably navigate forms and interactive content, increasing errors and the time needed to complete tasks, and creating particular frustration for users with cognitive disabilities who need a predictable, logical interaction flow.

Affected groups:

  • People who are blind using screen readers
  • People who are deaf using keyboard-only navigation
  • People with motor disabilities using keyboard or switch access

button-name: Button Discoverability

Unlabeled buttons are silent black holes in the government digital experience. When a screen reader announces a button with no name, blind users cannot know what action it will perform. Submit, cancel, search, and navigation buttons without accessible names prevent citizens from completing applications, accessing benefits, or finding essential government resources independently.

Affected groups:

  • People who are blind using screen readers
  • People who are deaf and rely on visual-to-text tools

label-content-name-mismatch: Voice Control Activation

When the accessible name of an element does not match its visible text, voice control users cannot activate it using the words they see on screen. Saying "click Submit" to a button whose visual label is "Submit" but whose accessible name is "submitbtn" results in no action. This mismatch silently breaks voice control for citizens with motor disabilities who depend on this input method to interact with government websites.

Affected groups:

  • People who are blind using screen readers
  • People with low vision relying on screen magnifiers
  • People who are deaf using keyboard navigation
  • People with motor disabilities using voice control software
Disability icon key
Without VisionPeople who are blind or have no functional vision
Without Vision — People who are blind or have no functional vision (1.0% of U.S. population — ~3,400,000 Americans)
Limited VisionPeople with low vision who need magnification or high contrast
Limited Vision — People with low vision who need magnification or high contrast (2.4% of U.S. population — ~8,100,000 Americans)
Without Perception of ColorPeople who cannot distinguish certain colors (color blindness)
Without Perception of Color — People who cannot distinguish certain colors (color blindness) (4.3% of U.S. population — ~14,500,000 Americans)
Without HearingPeople who are deaf and cannot hear audio content
Without Hearing — People who are deaf and cannot hear audio content (0.3% of U.S. population — ~1,100,000 Americans)
Limited HearingPeople with hearing loss who may struggle with audio without accommodations
Limited Hearing — People with hearing loss who may struggle with audio without accommodations (3.5% of U.S. population — ~11,900,000 Americans)
Without SpeechPeople who cannot use speech or voice-based input effectively
Without Speech — People who cannot use speech or voice-based input effectively (0.5% of U.S. population — ~1,700,000 Americans)
Limited ManipulationPeople with limited hand, finger, or fine motor dexterity
Limited Manipulation — People with limited hand, finger, or fine motor dexterity (2.2% of U.S. population — ~7,600,000 Americans)
Limited Reach and StrengthPeople with limited reach, strength, or stamina
Limited Reach and Strength — People with limited reach, strength, or stamina (5.8% of U.S. population — ~19,600,000 Americans)
Limited Language, Cognitive, and Learning AbilitiesPeople with cognitive, learning, or language differences
Limited Language, Cognitive, and Learning Abilities — People with cognitive, learning, or language differences (4.7% of U.S. population — ~15,900,000 Americans)

These icons show which groups of people with disabilities are excluded by each accessibility barrier. Where page view data is available, each icon shows an estimated number of people potentially excluded (page loads for affected URLs × disability prevalence rate from U.S. Census ACS 2023). Hover over or focus an icon to see the full estimate and methodology. Icons follow the Section 508 Functional Performance Criteria and the equivalent EU EN 301 549 v3.2.1 Table B.2 categories.

Prevalence data: U.S. Census Bureau, American Community Survey (ACS) 2023 1-Year Estimates, Table B18101; supplemental data from CDC, NIDCD, AFB, and NIH/NEI. U.S. population base: ~336,500,000 (2023 estimate). Reviewed annually.

See the Section 508 WCAG to FPC mapping for additional detail on how accessibility requirements map to functional needs.

Download full axe findings JSON for this day | Download full axe findings CSV for this day

Usability Heuristics Summary

The most common accessibility violations map to Nielsen Norman Group's 10 usability heuristics. This table shows which heuristics are most affected by today's top axe-core violations, helping to identify where systemic usability barriers exist.

NN/g usability heuristics affected by today's top accessibility violations
# Heuristic Issue patterns URL violations Related axe rules
6 Recognition rather than recall 4 112 landmark-one-main, heading-order, color-contrast, link-name
4 Consistency and standards 4 95 landmark-one-main, heading-order, link-name, label-content-name-mismatch
1 Visibility of system status 3 78 landmark-one-main, color-contrast, link-in-text-block
8 Aesthetic and minimalist design 3 78 landmark-one-main, color-contrast, link-in-text-block
9 Help users recognize, diagnose, and recover from errors 3 78 landmark-one-main, color-contrast, link-in-text-block
10 Help and documentation 3 78 landmark-one-main, color-contrast, link-in-text-block
7 Flexibility and efficiency of use 4 69 heading-order, link-name, skip-link, label-content-name-mismatch
5 Error prevention 2 51 landmark-one-main, link-in-text-block
Heuristics with no violations today
NN/g usability heuristics with no violations in today's top 10 axe patterns
# Heuristic Issue patterns URL violations Related axe rules
2 Match between system and the real world 0 0 —
3 User control and freedom 0 0 —

Aggregate Scores

Performance
55.82
Accessibility
91.74
Best Practices
91.19
SEO
88.43

Americans Excluded by Disability Today

Based on 16,548,376 page loads across successfully scanned government URLs and U.S. disability prevalence rates from the U.S. Census Bureau, American Community Survey (ACS) 2023 1-Year Estimates, Table B18101 (2023), an estimated 840,000 Americans encountered an accessibility barrier on a government website today.

Each row shows the number of people in a disability group who visited a page with at least one accessibility issue that affects their group. Prevalence rates and U.S. population estimates are derived from the American Community Survey (ACS) and supplemental sources. These figures are rough estimates intended to illustrate the scale of accessibility barriers.

Estimated Americans excluded today by disability category (2023 Census data)
Icon Disability Group (Section 508 FPC) U.S. Prevalence U.S. Population Affected Page Loads with Barriers Est. Americans Excluded Today
Limited Reach and Strength 5.8% ~19,600,000 4,940,000 280,000
Without Perception of Color 4.3% ~14,500,000 4,750,000 200,000
Limited Manipulation 2.2% ~7,600,000 6,760,000 140,000
Limited Vision 2.4% ~8,100,000 4,780,000 110,000
Without Vision 1.0% ~3,400,000 6,720,000 67,292
Without Hearing 0.3% ~1,100,000 6,720,000 20,188
Limited Language, Cognitive, and Learning Abilities 4.7% ~15,900,000 8,169 384

Sources: U.S. Census Bureau, American Community Survey (ACS) 2023 1-Year Estimates, Table B18101; disability prevalence from ACS 2023 and supplemental CDC/NIDCD/NIH data. Reviewed annually.

Performance Impact on Americans

Google defines a good Largest Contentful Paint (LCP) as under 2.5 seconds and recommends pages under 1.6 MB. The figures below estimate how much extra time Americans spend waiting, and how much extra data is transferred, because government websites fall short of these benchmarks. Calculations are based on 125 successfully scanned URLs with Lighthouse timing data.

Estimated performance impact vs. Google benchmarks for government URLs scanned on April 4, 2026
Metric Estimated total (April 4, 2026) Notes
Extra time waiting (vs 2.5s LCP benchmark) 1 year, 4 months, 9 daysExtra time is calculated as: for each scanned URL, max(0, actual LCP − 2.5s) × page loads. Total: 42,870,282 seconds. 42,870,282 seconds
Extra data transferred (vs 1.6 MB page weight benchmark) ~6.5 TB (272 copies of Wikipedia)Extra data is calculated as: for each scanned URL, max(0, actual page weight − 1.6 MB) × page loads. Across 125 URLs with weight data

LCP and page weight are measured by Lighthouse. Wikipedia copy count uses a size of 24.05 GB per Wikipedia:Size of Wikipedia. These are rough estimates based on a sample of the top government URLs by traffic. Hover or focus the estimated totals for calculation details.

Content Density (Words per Megabyte)

Words-per-Megabyte (WpM) measures how efficiently a page delivers readable content relative to its total download size. A low ratio indicates Digital Bloat—the page transfers far more data than the text it contains. Pages below 200 WpM are flagged for optimization review.

Content density for top URLs scanned on April 4, 2026 (up to 10 shown)
URL Word Count Words/MB
https://ncbi.nlm.nih.gov 308 339
https://pubmed.ncbi.nlm.nih.gov 420 505
https://cdc.gov 242 77
https://medlineplus.gov 81 64
https://cms.gov 176 81
https://clinicaltrials.gov 22 15
https://nih.gov 250 141
https://blast.ncbi.nlm.nih.gov 77 36
https://dailymed.nlm.nih.gov 186 110
https://account.ncbi.nlm.nih.gov 31,530 33,790

Word counts are extracted from the page’s main article content using Mozilla Readability, which strips navigation, sidebars, and ads. Page weight is the total resource size measured by Lighthouse. Pages below 200 WpM may impose unnecessary data costs on users on metered connections.

History

Daily aggregate Lighthouse scores from 2026-04-03 to 2026-04-04 0 20 40 60 80 100 04-0304-04 Performance Accessibility Best Practices SEO

Download full Lighthouse history CSV · For the average comparison, see the Comparison with Average section above.

Daily aggregate Lighthouse scores (14 most-recent days)
DatePerformanceAccessibilityBest PracticesSEO
2026-04-0456.1392.2791.288.71
2026-04-036287.318988.45

Top URLs by Traffic (Scanned)

Showing up to 100 highest-traffic HHS URLs from the latest available analytics.usa.gov data in this run.

Note: CWV = Core Web Vitals (measures page loading performance including Largest Contentful Paint, Cumulative Layout Shift, and Interaction to Next Paint). Lighthouse scores are 0–100 (higher is better). The Accessibility / Important column shows the Lighthouse accessibility score; if Critical or Serious axe findings exist the count appears after the slash (e.g. 94 / 2). Click Details (N) to view WCAG accessibility findings for each URL.

Download axe findings JSON for this day | Download axe findings CSV for this day

Top government URLs by daily traffic with Lighthouse scan results
Lighthouse accessibility score (0–100). If any Critical or Serious axe findings exist, the count is shown after the slash (e.g. 94 / 2). Axe details Technologies
https://pmc.ncbi.nlm.nih.govDepartment of Health and Human Services 4876715 needs improvement 76 / 214 daysTotal time users spent waiting for this page to load: 3.8s LCP × 4,876,715 page loads. 100 96 92 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://ncbi.nlm.nih.govDepartment of Health and Human Services 4207188 needs improvement 75 / 175 daysTotal time users spent waiting for this page to load: 3.6s LCP × 4,207,188 page loads. 91 / 2 96 92 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://pubmed.ncbi.nlm.nih.govDepartment of Health and Human Services 3559676 needs improvement 89 / 94 daysTotal time users spent waiting for this page to load: 2.3s LCP × 3,559,676 page loads. 100 100 92 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://pubchem.ncbi.nlm.nih.govDepartment of Health and Human Services 740527 needs improvement 86 / 24 daysTotal time users spent waiting for this page to load: 2.8s LCP × 740,527 page loads. 100 100 100 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://cdc.govDepartment of Health and Human Services 693666 poor 67 / 109 daysTotal time users spent waiting for this page to load: 13.6s LCP × 693,666 page loads. 91 / 2 100 85 USWDS 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://medlineplus.govDepartment of Health and Human Services 507716 poor 67 / 14 daysTotal time users spent waiting for this page to load: 2.3s LCP × 507,716 page loads. 95 / 1 96 92 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://cms.govDepartment of Health and Human Services 434058 poor 60 / 27 daysTotal time users spent waiting for this page to load: 5.4s LCP × 434,058 page loads. 90 / 2 73 85 Drupal 3 3rd-partyThird-party services: Google Analytics, Digital Analytics Program, YouTube
https://fda.govDepartment of Health and Human Services 342982 poor 49 / 215 daysTotal time users spent waiting for this page to load: 54.1s LCP × 342,982 page loads. 95 / 1 100 100 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Ads
https://clinicaltrials.govDepartment of Health and Human Services 214167 poor 50 / 22 daysTotal time users spent waiting for this page to load: 8.9s LCP × 214,167 page loads. 97 / 2 96 100 USWDS 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Fonts
https://accessdata.fda.govDepartment of Health and Human Services 168865 unknown 0 0 0 0
https://hhs.govDepartment of Health and Human Services 130313 poor 34 / 9 daysTotal time users spent waiting for this page to load: 5.8s LCP × 130,313 page loads. 100 96 92 Drupal USWDS 6 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Ads, YouTube, Google Fonts
https://nih.govDepartment of Health and Human Services 104068 poor 59 / 9 daysTotal time users spent waiting for this page to load: 7.6s LCP × 104,068 page loads. 96 / 1 96 92 Drupal USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://vsearch.nlm.nih.govDepartment of Health and Human Services 91774 unknown 0 0 0 0
https://blast.ncbi.nlm.nih.govDepartment of Health and Human Services 80416 poor 43 / 8 daysTotal time users spent waiting for this page to load: 8.9s LCP × 80,416 page loads. 91 / 2 96 100 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://dailymed.nlm.nih.govDepartment of Health and Human Services 72105 poor 53 / 6 daysTotal time users spent waiting for this page to load: 7.0s LCP × 72,105 page loads. 91 / 2 85 67 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://account.ncbi.nlm.nih.govDepartment of Health and Human Services 43037 poor 70 / 41 hoursTotal time users spent waiting for this page to load: 3.4s LCP × 43,037 page loads. 100 100 58 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://acf.govDepartment of Health and Human Services 32099 poor 37 / 4 daysTotal time users spent waiting for this page to load: 10.4s LCP × 32,099 page loads. 97 / 1 92 83 Drupal 6 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Ads, unpkg CDN, Google Fonts
https://wwwnc.cdc.govDepartment of Health and Human Services 27072 poor 66 / 4 daysTotal time users spent waiting for this page to load: 13.9s LCP × 27,072 page loads. 91 / 2 100 85 USWDS 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://openi.nlm.nih.govDepartment of Health and Human Services 21845 poor 26 / 3 daysTotal time users spent waiting for this page to load: 13.1s LCP × 21,845 page loads. 55 / 6 96 67 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://nlm.nih.govDepartment of Health and Human Services 19179 poor 16 / 3 daysTotal time users spent waiting for this page to load: 12.7s LCP × 19,179 page loads. 100 73 83 WordPress USWDS 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Fonts
https://purplebooksearch.fda.govDepartment of Health and Human Services 18416 poor 70 / 12 hoursTotal time users spent waiting for this page to load: 2.4s LCP × 18,416 page loads. 96 / 1 92 91 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://support.nlm.nih.govDepartment of Health and Human Services 14309 poor 18 / 39 hoursTotal time users spent waiting for this page to load: 9.8s LCP × 14,309 page loads. 88 / 2 54 91 5 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, cdnjs, Google Fonts
https://search.cdc.govDepartment of Health and Human Services 12953 poor 66 / 2 daysTotal time users spent waiting for this page to load: 13.9s LCP × 12,953 page loads. 91 / 2 96 85 USWDS 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://wwwn.cdc.govDepartment of Health and Human Services 12569 unknown 0 0 0 0
https://access.fda.govDepartment of Health and Human Services 9166 unknown 0 0 0 0
https://register.clinicaltrials.govDepartment of Health and Human Services 6884 needs improvement 87 / 6 hoursTotal time users spent waiting for this page to load: 2.9s LCP × 6,884 page loads. 76 / 2 92 92 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://direct.fda.govDepartment of Health and Human Services 6602 poor 54 / 22 hoursTotal time users spent waiting for this page to load: 12.0s LCP × 6,602 page loads. 84 / 3 77 82 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://magazine.medlineplus.govDepartment of Health and Human Services 5691 poor 54 / 8 hoursTotal time users spent waiting for this page to load: 5.0s LCP × 5,691 page loads. 87 / 3 69 92 USWDS 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Facebook / Meta Pixel
https://www.ncbi.nlm.nih.govDepartment of Health and Human Services 5487 needs improvement 82 / 4 hoursTotal time users spent waiting for this page to load: 2.7s LCP × 5,487 page loads. 91 / 2 96 92 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://hfpappexternal.fda.govDepartment of Health and Human Services 5246 unknown 0 0 0 0
https://submit.ncbi.nlm.nih.govDepartment of Health and Human Services 4979 needs improvement 84 / 4 hoursTotal time users spent waiting for this page to load: 3.1s LCP × 4,979 page loads. 100 96 83 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://meshb.nlm.nih.govDepartment of Health and Human Services 4576 poor 59 / 11 hoursTotal time users spent waiting for this page to load: 8.4s LCP × 4,576 page loads. 88 / 2 100 91 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://id.nlm.nih.govDepartment of Health and Human Services 4393 poor 46 / 8 hoursTotal time users spent waiting for this page to load: 6.3s LCP × 4,393 page loads. 76 / 4 100 83 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://wonder.cdc.govDepartment of Health and Human Services 4379 needs improvement 78 / 3 hoursTotal time users spent waiting for this page to load: 2.7s LCP × 4,379 page loads. 88 / 3 96 83 USWDS 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://icd10cmtool.cdc.govDepartment of Health and Human Services 4338 unknown — — — —
https://gis.cdc.govDepartment of Health and Human Services 4260 unknown — — — —
https://datadashboard.fda.govDepartment of Health and Human Services 3779 poor 50 / 7 hoursTotal time users spent waiting for this page to load: 6.8s LCP × 3,779 page loads. 81 / 1 100 100 3 3rd-partyThird-party services: Google Analytics, Digital Analytics Program, Google Ads
https://atsdr.cdc.govDepartment of Health and Human Services 3683 poor 69 / 10 hoursTotal time users spent waiting for this page to load: 9.6s LCP × 3,683 page loads. 95 / 2 100 92 USWDS 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://archive.cdc.govDepartment of Health and Human Services 3404 unknown — — — —
https://npin.cdc.govDepartment of Health and Human Services 3397 unknown — — — —
https://docline.govDepartment of Health and Human Services 3320 poor 36 / 13 hoursTotal time users spent waiting for this page to load: 14.5s LCP × 3,320 page loads. 96 / 1 92 100 USWDS 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Fonts
https://tools.cdc.govDepartment of Health and Human Services 3042 poor 31 / 8 hoursTotal time users spent waiting for this page to load: 10.1s LCP × 3,042 page loads. 95 / 1 92 92 USWDS 1 3rd-partyThird-party services: Google Analytics
https://trace.ncbi.nlm.nih.govDepartment of Health and Human Services 3011 poor 54 / 9 hoursTotal time users spent waiting for this page to load: 10.2s LCP × 3,011 page loads. 94 / 1 81 100 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Fonts
https://collections.nlm.nih.govDepartment of Health and Human Services 2602 poor 36 / 8 hoursTotal time users spent waiting for this page to load: 11.7s LCP × 2,602 page loads. 91 / 2 100 92 USWDS 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Fonts
https://lhncbc.nlm.nih.govDepartment of Health and Human Services 2323 poor 49 / 7 hoursTotal time users spent waiting for this page to load: 11.2s LCP × 2,323 page loads. 83 / 2 92 92 USWDS 2.4.0 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Fonts
https://ncbiinsights.ncbi.nlm.nih.govDepartment of Health and Human Services 2076 poor 67 / 7 hoursTotal time users spent waiting for this page to load: 11.6s LCP × 2,076 page loads. 90 / 2 100 100 WordPress 3 3rd-partyThird-party services: Google Analytics, Digital Analytics Program, Google Fonts
https://www.cdc.govDepartment of Health and Human Services 1715 poor 67 / 6 hoursTotal time users spent waiting for this page to load: 13.2s LCP × 1,715 page loads. 91 / 2 100 85 USWDS 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://fdanj.nlm.nih.govDepartment of Health and Human Services 1647 poor 40 / 5 hoursTotal time users spent waiting for this page to load: 10.1s LCP × 1,647 page loads. 95 / 1 100 92 USWDS 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Fonts
https://precision.fda.govDepartment of Health and Human Services 1599 poor 61 / 4 hoursTotal time users spent waiting for this page to load: 8.2s LCP × 1,599 page loads. 91 / 2 92 91 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://nihms.nih.govDepartment of Health and Human Services 1463 poor 44 / 1 hoursTotal time users spent waiting for this page to load: 3.6s LCP × 1,463 page loads. 96 / 1 81 91 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://uts.nlm.nih.govDepartment of Health and Human Services 1433 poor 45 / 4 hoursTotal time users spent waiting for this page to load: 9.8s LCP × 1,433 page loads. 100 96 100 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://blogs.cdc.govDepartment of Health and Human Services 1352 poor 75 / 2 hoursTotal time users spent waiting for this page to load: 4.7s LCP × 1,352 page loads. 100 96 100 WordPress 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://ndc.services.cdc.govDepartment of Health and Human Services 1331 needs improvement 91 / 60 minutesTotal time users spent waiting for this page to load: 2.7s LCP × 1,331 page loads. 100 / 1 100 100 WordPress USWDS 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://nhlbi.nih.govDepartment of Health and Human Services 1331 poor 47 / 3 hoursTotal time users spent waiting for this page to load: 7.3s LCP × 1,331 page loads. 96 / 1 73 92 Drupal USWDS 4 3rd-partyThird-party services: Google Analytics, Digital Analytics Program, Adobe Analytics, Google Fonts
https://reach.cdc.govDepartment of Health and Human Services 1315 unknown — — — —
https://vsac.nlm.nih.govDepartment of Health and Human Services 1307 unknown — — — —
https://www2a.cdc.govDepartment of Health and Human Services 1294 unknown — — — —
https://dbgap.ncbi.nlm.nih.govDepartment of Health and Human Services 1217 poor 54 / 7 hoursTotal time users spent waiting for this page to load: 20.1s LCP × 1,217 page loads. 93 / 2 96 82 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://mor.nlm.nih.govDepartment of Health and Human Services 1181 poor 49 / 4 hoursTotal time users spent waiting for this page to load: 11.8s LCP × 1,181 page loads. 79 / 2 100 92 USWDS 2.4.0 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Fonts
https://catalog.nlm.nih.govDepartment of Health and Human Services 1166 poor 11 / 6 hoursTotal time users spent waiting for this page to load: 19.8s LCP × 1,166 page loads. 93 / 2 100 66 USWDS 1 3rd-partyThird-party services: Google Tag Manager
https://gettested.cdc.govDepartment of Health and Human Services 963 needs improvement 79 / 47 minutesTotal time users spent waiting for this page to load: 2.9s LCP × 963 page loads. 100 100 100 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://niddk.nih.govDepartment of Health and Human Services 931 poor 63 / 2 hoursTotal time users spent waiting for this page to load: 9.5s LCP × 931 page loads. 100 96 100 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://dataview.ncbi.nlm.nih.govDepartment of Health and Human Services 925 poor 41 / 3 hoursTotal time users spent waiting for this page to load: 11.0s LCP × 925 page loads. 100 96 58 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://findingaids.nlm.nih.govDepartment of Health and Human Services 871 poor 52 / 1 hoursTotal time users spent waiting for this page to load: 5.8s LCP × 871 page loads. 99 96 92 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://jobs.cdc.govDepartment of Health and Human Services 792 poor 57 / 50 minutesTotal time users spent waiting for this page to load: 3.8s LCP × 792 page loads. 96 / 1 92 100 USWDS 4 3rd-partyThird-party services: Google Analytics, Digital Analytics Program, YouTube, Google Fonts
https://wisqars.cdc.govDepartment of Health and Human Services 699 poor 40 / 1 hoursTotal time users spent waiting for this page to load: 7.4s LCP × 699 page loads. 98 96 83 USWDS 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://nimh.nih.govDepartment of Health and Human Services 679 poor 64 / 1 hoursTotal time users spent waiting for this page to load: 6.3s LCP × 679 page loads. 93 / 1 100 85 Drupal USWDS 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Fonts
https://vaccines.govDepartment of Health and Human Services 677 unknown 0 0 0 0
https://ephtracking.cdc.govDepartment of Health and Human Services 651 poor 20 / 2 hoursTotal time users spent waiting for this page to load: 13.0s LCP × 651 page loads. 100 92 82 USWDS 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://profiles.nlm.nih.govDepartment of Health and Human Services 646 poor 52 / 4 hoursTotal time users spent waiting for this page to load: 23.2s LCP × 646 page loads. 96 / 1 77 92 USWDS 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Fonts
https://datasetcatalog.nlm.nih.govDepartment of Health and Human Services 643 poor 29 / 3 hoursTotal time users spent waiting for this page to load: 16.3s LCP × 643 page loads. 91 / 2 100 100 USWDS 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, jsDelivr CDN
https://circulatingnow.nlm.nih.govDepartment of Health and Human Services 637 poor 65 / 1 hoursTotal time users spent waiting for this page to load: 6.1s LCP × 637 page loads. 95 / 1 96 100 WordPress 3 3rd-partyThird-party services: Google Analytics, Digital Analytics Program, Google Fonts
https://thecommunityguide.org 607 poor 48 / 59 minutesTotal time users spent waiting for this page to load: 5.8s LCP × 607 page loads. 98 73 83 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://preview.ncbi.nlm.nih.govDepartment of Health and Human Services 580 needs improvement 80 / 28 minutesTotal time users spent waiting for this page to load: 2.9s LCP × 580 page loads. 93 / 2 96 58 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://jats.nlm.nih.govDepartment of Health and Human Services 565 poor 65 / 43 minutesTotal time users spent waiting for this page to load: 4.6s LCP × 565 page loads. 87 / 2 88 92 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://selectagents.govDepartment of Health and Human Services 538 poor 50 / 1 hoursTotal time users spent waiting for this page to load: 6.9s LCP × 538 page loads. 91 / 2 77 100 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://vetoviolence.cdc.govDepartment of Health and Human Services 515 unknown — — — —
https://phgkb.cdc.govDepartment of Health and Human Services 505 unknown — — — —
https://phinvads.cdc.govDepartment of Health and Human Services 502 unknown — — — —
https://ninds.nih.govDepartment of Health and Human Services 499 unknown — — — —
https://meshb-prev.nlm.nih.govDepartment of Health and Human Services 460 poor 59 / 1 hoursTotal time users spent waiting for this page to load: 8.4s LCP × 460 page loads. 88 / 2 100 91 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://nia.nih.govDepartment of Health and Human Services 460 unknown 0 0 0 0
https://nida.nih.govDepartment of Health and Human Services 454 poor 41 / 1 hoursTotal time users spent waiting for this page to load: 8.7s LCP × 454 page loads. 98 100 100 Drupal USWDS 5 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Ads, Google Fonts
https://millionhearts.hhs.govDepartment of Health and Human Services 434 poor 72 / 18 minutesTotal time users spent waiting for this page to load: 2.5s LCP × 434 page loads. 93 / 2 73 92 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://animaldrugsatfda.fda.govDepartment of Health and Human Services 431 poor 33 / 2 hoursTotal time users spent waiting for this page to load: 20.7s LCP × 431 page loads. 95 / 1 92 91 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program
https://nationaldppcsc.cdc.govDepartment of Health and Human Services 410 poor 28 / 4 hoursTotal time users spent waiting for this page to load: 37.5s LCP × 410 page loads. 97 / 1 73 75 2 3rd-partyThird-party services: Google Analytics, Google Fonts
https://ncsacw.acf.govDepartment of Health and Human Services 383 poor 51 / 47 minutesTotal time users spent waiting for this page to load: 7.3s LCP × 383 page loads. 94 / 2 96 92 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Fonts
https://labels.fda.govDepartment of Health and Human Services 379 needs improvement 95 / 14 minutesTotal time users spent waiting for this page to load: 2.2s LCP × 379 page loads. 54 / 7 65 91
https://classification.nlm.nih.govDepartment of Health and Human Services 367 poor 46 / 1 hoursTotal time users spent waiting for this page to load: 9.9s LCP × 367 page loads. 94 / 1 88 91 USWDS 3.7.1 6 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, jsDelivr CDN, unpkg CDN, Google Fonts
https://www2.cdc.govDepartment of Health and Human Services 364 unknown 0 0 0 0
https://nfr.cdc.govDepartment of Health and Human Services 357 poor 40 / 1 hoursTotal time users spent waiting for this page to load: 14.1s LCP × 357 page loads. 97 92 83 5 3rd-partyThird-party services: Google Analytics, Digital Analytics Program, Google Ads, YouTube, Google Fonts
https://rarediseases.info.nih.govDepartment of Health and Human Services 352 poor 48 / 49 minutesTotal time users spent waiting for this page to load: 8.4s LCP × 352 page loads. 97 / 1 92 100 4 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program, Google Fonts
https://www.nihms.nih.govDepartment of Health and Human Services 352 poor 54 / 16 minutesTotal time users spent waiting for this page to load: 2.8s LCP × 352 page loads. 96 / 1 81 91 USWDS 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://shi.cdc.govDepartment of Health and Human Services 327 poor 42 / 3 hoursTotal time users spent waiting for this page to load: 29.5s LCP × 327 page loads. 100 77 100 3 3rd-partyThird-party services: Google Analytics, Digital Analytics Program, cdnjs
https://cde.nlm.nih.govDepartment of Health and Human Services 315 poor 36 / 48 minutesTotal time users spent waiting for this page to load: 9.2s LCP × 315 page loads. 96 / 1 100 92 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://gudid.fda.govDepartment of Health and Human Services 311 poor 59 / 39 minutesTotal time users spent waiting for this page to load: 7.5s LCP × 311 page loads. 87 / 1 92 91
https://nccd.cdc.govDepartment of Health and Human Services 297 poor 59 / 2 hoursTotal time users spent waiting for this page to load: 22.4s LCP × 297 page loads. 95 / 1 100 92 USWDS 1 3rd-partyThird-party services: Google Analytics
https://testpubchem.ncbi.nlm.nih.govDepartment of Health and Human Services 294 needs improvement 85 / 14 minutesTotal time users spent waiting for this page to load: 2.9s LCP × 294 page loads. 100 100 66 3 3rd-partyThird-party services: Google Analytics, Google Tag Manager, Digital Analytics Program
https://clint13.be-md.ncbi.nlm.nih.govDepartment of Health and Human Services 285 unknown 0 0 0 0
https://yrbs-explorer.services.cdc.govDepartment of Health and Human Services 281 poor 62 / 14 minutesTotal time users spent waiting for this page to load: 2.9s LCP × 281 page loads. 96 / 1 100 91 2 3rd-partyThird-party services: Google Analytics, Digital Analytics Program

Detected Technologies

Technology signals detected from the network requests loaded by each scanned URL. CMS detection identifies WordPress, Drupal, and Joomla from characteristic asset paths. USWDS detection identifies use of the U.S. Web Design System.

CMS platform counts across 147 successfully scanned URLs
CMSURLsShare
Drupal20Sites: acf.gov, cdrh-rst.fda.gov, cms.gov, era.nih.gov, grants.nih.gov, hhs.gov, hivinfo.nih.gov, nei.nih.gov, nhlbi.nih.gov, niaaa.nih.gov, niams.nih.gov, nibib.nih.gov, nichd.nih.gov, nida.nih.gov, nidcr.nih.gov, nigms.nih.gov, nih.gov, nimh.nih.gov, ntp.niehs.nih.gov, report.nih.gov14%
WordPress8Sites: blogs.cdc.gov, circulatingnow.nlm.nih.gov, hivrisk.cdc.gov, medicineonscreen.nlm.nih.gov, ncbiinsights.ncbi.nlm.nih.gov, ndc.services.cdc.gov, nlm.nih.gov, nlmdirector.nlm.nih.gov5%

USWDS detected on 53 of 147 scanned URLs (36%).

Observed USWDS versions: 2.4.0Sites: lhncbc.nlm.nih.gov, mor.nlm.nih.gov, 3.7.1Sites: classification.nlm.nih.gov. The latest release is available at github.com/uswds/uswds/releases.

Third-Party JavaScript Services

Third-party scripts detected from network requests loaded by scanned pages. These services may affect page performance, user privacy, and security posture.

10 services marked tracking send user data to third-party servers and may have privacy implications for site visitors.

Third-party services detected across 147 successfully scanned URLs
Service Category URLs Share Privacy Size (avg / total)
Google Analytics analytics 117Sites: account.ncbi.nlm.nih.gov, acf.gov, animaldrugsatfda.fda.gov, art.cdc.gov, atsdr.cdc.gov, beta.ncbi.nlm.nih.gov, blast.ncbi.nlm.nih.gov, blogs.cdc.gov, cdc.gov, cde.nlm.nih.gov, cdrh-rst.fda.gov, circulatingnow.nlm.nih.gov, classification.nlm.nih.gov, clinicaltables.nlm.nih.gov, clinicaltrials.gov, cms.gov, collections.nlm.nih.gov, dailymed.nlm.nih.gov, datadashboard.fda.gov, datadiscovery.nlm.nih.gov, datasetcatalog.nlm.nih.gov, dataview.ncbi.nlm.nih.gov, dbgap.ncbi.nlm.nih.gov, direct.fda.gov, dnpao-dtm.cdc.gov, docline.gov, documentation.uts.nlm.nih.gov, dprpdataportal.cdc.gov, ephtracking.cdc.gov, era.nih.gov, fda.gov, fdanj.nlm.nih.gov, finddoxypep.cdc.gov, findingaids.nlm.nih.gov, formbuilder.nlm.nih.gov, gettested.cdc.gov, grants.nih.gov, heart-stroke-atlas.cdc.gov, hhs.gov, hivinfo.nih.gov, hivrisk.cdc.gov, id.nlm.nih.gov, imagic.nlm.nih.gov, indexcat.nlm.nih.gov, jats.nlm.nih.gov, jobs.cdc.gov, learn.nlm.nih.gov, lhncbc.nlm.nih.gov, magazine.medlineplus.gov, medicineonscreen.nlm.nih.gov, medlineplus.gov, meshb-prev.nlm.nih.gov, meshb.nlm.nih.gov, millionhearts.hhs.gov, mor.nlm.nih.gov, mvps.cdc.gov, nationaldppcsc.cdc.gov, ncbi.nlm.nih.gov, ncbiinsights.ncbi.nlm.nih.gov, nccd.cdc.gov, nccih.nih.gov, ncsacw.acf.gov, ndc.services.cdc.gov, nei.nih.gov, nfr.cdc.gov, nhlbi.nih.gov, niaaa.nih.gov, niams.nih.gov, nibib.nih.gov, nichd.nih.gov, nida.nih.gov, nidcr.nih.gov, niddk.nih.gov, nigms.nih.gov, nih.gov, nihms.nih.gov, nimh.nih.gov, nlm.nih.gov, nlmdirector.nlm.nih.gov, ntp.niehs.nih.gov, openi.nlm.nih.gov, pids.cdc.gov, places.cdc.gov, pmc.ncbi.nlm.nih.gov, poca-public.fda.gov, precision.fda.gov, preview.ncbi.nlm.nih.gov, profiles.nlm.nih.gov, prstest.clinicaltrials.gov, pubchem.ncbi.nlm.nih.gov, pubmed.ncbi.nlm.nih.gov, purplebooksearch.fda.gov, rarediseases.info.nih.gov, register.clinicaltrials.gov, report.nih.gov, reporter.nih.gov, search.cdc.gov, selectagents.gov, shi.cdc.gov, submit.ncbi.nlm.nih.gov, support.nlm.nih.gov, testpubchem.ncbi.nlm.nih.gov, thecommunityguide.org, timp-ccid.fda.gov, tools.cdc.gov, trace.ncbi.nlm.nih.gov, uts.nlm.nih.gov, wisqars.cdc.gov, wonder.cdc.gov, www.access.fda.gov, www.cdc.gov, www.clinicaltrials.gov, www.ncbi.nlm.nih.gov, www.nihms.nih.gov, wwwnc.cdc.gov, youthonline.cdc.gov, yrbs-explorer.services.cdc.gov 80% tracking 384 KB (5947.6 GB total)
Digital Analytics Program analytics 111Sites: account.ncbi.nlm.nih.gov, acf.gov, animaldrugsatfda.fda.gov, atsdr.cdc.gov, beta.ncbi.nlm.nih.gov, blast.ncbi.nlm.nih.gov, blogs.cdc.gov, cdc.gov, cde.nlm.nih.gov, cdrh-rst.fda.gov, circulatingnow.nlm.nih.gov, classification.nlm.nih.gov, clinicaltables.nlm.nih.gov, clinicaltrials.gov, cms.gov, collections.nlm.nih.gov, dailymed.nlm.nih.gov, datadashboard.fda.gov, datadiscovery.nlm.nih.gov, datasetcatalog.nlm.nih.gov, dataview.ncbi.nlm.nih.gov, dbgap.ncbi.nlm.nih.gov, direct.fda.gov, dnpao-dtm.cdc.gov, docline.gov, documentation.uts.nlm.nih.gov, dprpdataportal.cdc.gov, ephtracking.cdc.gov, era.nih.gov, fda.gov, fdanj.nlm.nih.gov, finddoxypep.cdc.gov, findingaids.nlm.nih.gov, formbuilder.nlm.nih.gov, gettested.cdc.gov, grants.nih.gov, heart-stroke-atlas.cdc.gov, hhs.gov, hivinfo.nih.gov, hivrisk.cdc.gov, id.nlm.nih.gov, imagic.nlm.nih.gov, indexcat.nlm.nih.gov, jats.nlm.nih.gov, jobs.cdc.gov, learn.nlm.nih.gov, lhncbc.nlm.nih.gov, magazine.medlineplus.gov, medicineonscreen.nlm.nih.gov, medlineplus.gov, meshb-prev.nlm.nih.gov, meshb.nlm.nih.gov, millionhearts.hhs.gov, mor.nlm.nih.gov, ncbi.nlm.nih.gov, ncbiinsights.ncbi.nlm.nih.gov, nccih.nih.gov, ncsacw.acf.gov, ndc.services.cdc.gov, nei.nih.gov, nfr.cdc.gov, nhlbi.nih.gov, niaaa.nih.gov, niams.nih.gov, nibib.nih.gov, nichd.nih.gov, nida.nih.gov, nidcr.nih.gov, niddk.nih.gov, nigms.nih.gov, nih.gov, nihms.nih.gov, nimh.nih.gov, nlm.nih.gov, nlmdirector.nlm.nih.gov, ntp.niehs.nih.gov, openi.nlm.nih.gov, places.cdc.gov, pmc.ncbi.nlm.nih.gov, poca-public.fda.gov, precision.fda.gov, preview.ncbi.nlm.nih.gov, profiles.nlm.nih.gov, prstest.clinicaltrials.gov, pubchem.ncbi.nlm.nih.gov, pubmed.ncbi.nlm.nih.gov, purplebooksearch.fda.gov, rarediseases.info.nih.gov, register.clinicaltrials.gov, report.nih.gov, reporter.nih.gov, search.cdc.gov, selectagents.gov, shi.cdc.gov, submit.ncbi.nlm.nih.gov, support.nlm.nih.gov, testpubchem.ncbi.nlm.nih.gov, thecommunityguide.org, timp-ccid.fda.gov, trace.ncbi.nlm.nih.gov, uts.nlm.nih.gov, wisqars.cdc.gov, wonder.cdc.gov, www.access.fda.gov, www.cdc.gov, www.clinicaltrials.gov, www.ncbi.nlm.nih.gov, www.nihms.nih.gov, wwwnc.cdc.gov, youthonline.cdc.gov, yrbs-explorer.services.cdc.gov 76% 11 KB (175.3 GB total)
Google Tag Manager analytics 71Sites: account.ncbi.nlm.nih.gov, acf.gov, beta.ncbi.nlm.nih.gov, blast.ncbi.nlm.nih.gov, catalog.nlm.nih.gov, cde.nlm.nih.gov, classification.nlm.nih.gov, clinicaltables.nlm.nih.gov, clinicaltrials.gov, collections.nlm.nih.gov, dailymed.nlm.nih.gov, datadiscovery.nlm.nih.gov, datasetcatalog.nlm.nih.gov, dataview.ncbi.nlm.nih.gov, dbgap.ncbi.nlm.nih.gov, docline.gov, documentation.uts.nlm.nih.gov, era.nih.gov, fda.gov, fdanj.nlm.nih.gov, finddoxypep.cdc.gov, findingaids.nlm.nih.gov, formbuilder.nlm.nih.gov, gettested.cdc.gov, grants.nih.gov, hhs.gov, hivinfo.nih.gov, id.nlm.nih.gov, imagic.nlm.nih.gov, indexcat.nlm.nih.gov, jats.nlm.nih.gov, learn.nlm.nih.gov, lhncbc.nlm.nih.gov, magazine.medlineplus.gov, medlineplus.gov, meshb-prev.nlm.nih.gov, meshb.nlm.nih.gov, millionhearts.hhs.gov, mor.nlm.nih.gov, ncbi.nlm.nih.gov, nccih.nih.gov, ncsacw.acf.gov, nei.nih.gov, niaaa.nih.gov, niams.nih.gov, nibib.nih.gov, nichd.nih.gov, nida.nih.gov, nidcr.nih.gov, niddk.nih.gov, nih.gov, nihms.nih.gov, nimh.nih.gov, nlm.nih.gov, openi.nlm.nih.gov, pmc.ncbi.nlm.nih.gov, preview.ncbi.nlm.nih.gov, profiles.nlm.nih.gov, prstest.clinicaltrials.gov, pubchem.ncbi.nlm.nih.gov, pubmed.ncbi.nlm.nih.gov, rarediseases.info.nih.gov, register.clinicaltrials.gov, submit.ncbi.nlm.nih.gov, support.nlm.nih.gov, testpubchem.ncbi.nlm.nih.gov, trace.ncbi.nlm.nih.gov, uts.nlm.nih.gov, www.clinicaltrials.gov, www.ncbi.nlm.nih.gov, www.nihms.nih.gov 48% tracking 138 KB (1971.6 GB total)
Google Fonts fonts 42Sites: acf.gov, auth.nih.gov, circulatingnow.nlm.nih.gov, classification.nlm.nih.gov, clinicaltables.nlm.nih.gov, clinicaltrials.gov, collections.nlm.nih.gov, datadiscovery.nlm.nih.gov, digitalgallery.nlm.nih.gov, docline.gov, documentation.uts.nlm.nih.gov, era.nih.gov, fdanj.nlm.nih.gov, formbuilder.nlm.nih.gov, grants.nih.gov, hhs.gov, hivinfo.nih.gov, hivrisk.cdc.gov, indexcat.nlm.nih.gov, jobs.cdc.gov, lhncbc.nlm.nih.gov, mor.nlm.nih.gov, nationaldppcsc.cdc.gov, ncbiinsights.ncbi.nlm.nih.gov, nccih.nih.gov, ncsacw.acf.gov, nfr.cdc.gov, nhlbi.nih.gov, niams.nih.gov, nida.nih.gov, nimh.nih.gov, nlm.nih.gov, nlmdirector.nlm.nih.gov, poca-public.fda.gov, profiles.nlm.nih.gov, rarediseases.info.nih.gov, report.nih.gov, reporter.nih.gov, support.nlm.nih.gov, timp-ccid.fda.gov, trace.ncbi.nlm.nih.gov, www.clinicaltrials.gov 29% tracking 60 KB (25.1 GB total)
Google Ads advertising 12Sites: acf.gov, datadashboard.fda.gov, fda.gov, hhs.gov, hivinfo.nih.gov, nfr.cdc.gov, niaaa.nih.gov, niams.nih.gov, nibib.nih.gov, nichd.nih.gov, nida.nih.gov, nidcr.nih.gov 8% tracking 634 B (308.8 MB total)
jsDelivr CDN cdn 7Sites: classification.nlm.nih.gov, datasetcatalog.nlm.nih.gov, era.nih.gov, grants.nih.gov, heart-stroke-atlas.cdc.gov, hivinfo.nih.gov, learn.nlm.nih.gov 5% 59 KB (98.2 MB total)
YouTube social 5Sites: cms.gov, hhs.gov, jobs.cdc.gov, nfr.cdc.gov, nichd.nih.gov 3% tracking 52 KB (28.0 GB total)
unpkg CDN cdn 5Sites: acf.gov, classification.nlm.nih.gov, dnpao-dtm.cdc.gov, niams.nih.gov, nichd.nih.gov 3% 10 KB (316.8 MB total)
cdnjs cdn 4Sites: hivrisk.cdc.gov, learn.nlm.nih.gov, shi.cdc.gov, support.nlm.nih.gov 3% 90 KB (1.3 GB total)
Adobe Analytics analytics 3Sites: mvps.cdc.gov, nhlbi.nih.gov, pids.cdc.gov 2% tracking 24 KB (37.4 MB total)
Facebook / Meta Pixel advertising 1Sites: magazine.medlineplus.gov 1% tracking 127 KB (706.9 MB total)
Twitter / X Widgets social 1Sites: nlmdirector.nlm.nih.gov 1% tracking 134 KB (18.8 MB total)
ForeSee / Verint analytics 1Sites: hivinfo.nih.gov 1% tracking —
Adobe Fonts fonts 1Sites: era.nih.gov 1% tracking 168 KB (9.9 MB total)

Accessibility Statements (M-24-08)

OMB Memorandum M-24-08 requires each federal agency to publish a digital accessibility statement that includes contact information for accessibility issues, known limitations, and a link to the agency Section 508 program page.

52 of 147 domains (35%) checked have a detectable accessibility statement at a standard URL path.

Accessibility statement detection results for 147 checked domains
Domain Status Statement URL
acf.gov ✓ Found https://acf.gov/accessibility
art.cdc.gov ✓ Found https://art.cdc.gov/accessibility
catalog.nlm.nih.gov ✓ Found https://catalog.nlm.nih.gov/accessibility.html
cde.nlm.nih.gov ✓ Found https://cde.nlm.nih.gov/accessibility
clinicaltrials.gov ✓ Found https://clinicaltrials.gov/accessibility
cms.gov ✓ Found https://cms.gov/accessibility
collections.nlm.nih.gov ✓ Found https://collections.nlm.nih.gov/accessibility
dailymed.nlm.nih.gov ✓ Found https://dailymed.nlm.nih.gov/accessibility
dataview.ncbi.nlm.nih.gov ✓ Found https://dataview.ncbi.nlm.nih.gov/accessibility
docline.gov ✓ Found https://docline.gov/accessibility
dprpdataportal.cdc.gov ✓ Found https://dprpdataportal.cdc.gov/accessibility
era.nih.gov ✓ Found https://era.nih.gov/accessibility
fda.gov ✓ Found https://fda.gov/accessibility
fdanj.nlm.nih.gov ✓ Found https://fdanj.nlm.nih.gov/accessibility
heart-stroke-atlas.cdc.gov ✓ Found https://heart-stroke-atlas.cdc.gov/accessibility
hhs.gov ✓ Found https://hhs.gov/accessibility
lhncbc.nlm.nih.gov ✓ Found https://lhncbc.nlm.nih.gov/accessibility
magazine.medlineplus.gov ✓ Found https://magazine.medlineplus.gov/about/accessibility
medlineplus.gov ✓ Found https://medlineplus.gov/accessibility
mor.nlm.nih.gov ✓ Found https://mor.nlm.nih.gov/accessibility
mvps.cdc.gov ✓ Found https://mvps.cdc.gov/accessibility
ncbi.nlm.nih.gov ✓ Found https://ncbi.nlm.nih.gov/accessibility
nccih.nih.gov ✓ Found https://nccih.nih.gov/accessibility
nei.nih.gov ✓ Found https://nei.nih.gov/accessibility
nhlbi.nih.gov ✓ Found https://nhlbi.nih.gov/accessibility
nia.nih.gov ✓ Found https://nia.nih.gov/accessibility
niams.nih.gov ✓ Found https://niams.nih.gov/accessibility
nibib.nih.gov ✓ Found https://nibib.nih.gov/accessibility
nida.nih.gov ✓ Found https://nida.nih.gov/accessibility
nidcr.nih.gov ✓ Found https://nidcr.nih.gov/accessibility
niddk.nih.gov ✓ Found https://niddk.nih.gov/accessibility
nih.gov ✓ Found https://nih.gov/accessibility
nihms.nih.gov ✓ Found https://nihms.nih.gov/accessibility
nimh.nih.gov ✓ Found https://nimh.nih.gov/accessibility
nlm.nih.gov ✓ Found https://nlm.nih.gov/accessibility
openi.nlm.nih.gov ✓ Found https://openi.nlm.nih.gov/accessibility
pids.cdc.gov ✓ Found https://pids.cdc.gov/accessibility
pmc.ncbi.nlm.nih.gov ✓ Found https://pmc.ncbi.nlm.nih.gov/about/accessibility
poca-public.fda.gov ✓ Found https://poca-public.fda.gov/accessibility
profiles.nlm.nih.gov ✓ Found https://profiles.nlm.nih.gov/accessibility
pubmed.ncbi.nlm.nih.gov ✓ Found https://pubmed.ncbi.nlm.nih.gov/508
rarediseases.info.nih.gov ✓ Found https://rarediseases.info.nih.gov/accessibility
report.nih.gov ✓ Found https://report.nih.gov/accessibility-statement
reporter.nih.gov ✓ Found https://reporter.nih.gov/accessibility
shi.cdc.gov ✓ Found https://shi.cdc.gov/accessibility
submit.ncbi.nlm.nih.gov ✓ Found https://submit.ncbi.nlm.nih.gov/about/accessibility
timp-ccid.fda.gov ✓ Found https://timp-ccid.fda.gov/accessibility
uts.nlm.nih.gov ✓ Found https://uts.nlm.nih.gov/accessibility
www.access.fda.gov ✓ Found https://www.access.fda.gov/accessibility
www.clinicaltrials.gov ✓ Found https://www.clinicaltrials.gov/accessibility
www.ncbi.nlm.nih.gov ✓ Found https://www.ncbi.nlm.nih.gov/about/accessibility
www.nihms.nih.gov ✓ Found https://www.nihms.nih.gov/accessibility
access.fda.gov ✗ Not found
accessdata.fda.gov ✗ Not found
account-dev.ncbi.nlm.nih.gov ✗ Not found
account.ncbi.nlm.nih.gov ✗ Not found
animaldrugsatfda.fda.gov ✗ Not found
atsdr.cdc.gov ✗ Not found
auth.nih.gov ✗ Not found
beta.ncbi.nlm.nih.gov ✗ Not found
blast.ncbi.nlm.nih.gov ✗ Not found
blogs.cdc.gov ✗ Not found
cdc.gov ✗ Not found
cdn.clinicaltrials.gov ✗ Not found
cdrh-rst.fda.gov ✗ Not found
circulatingnow.nlm.nih.gov ✗ Not found
classification.nlm.nih.gov ✗ Not found
clinicaltables.nlm.nih.gov ✗ Not found
clint13.be-md.ncbi.nlm.nih.gov ✗ Not found
contact.preprod.fda.gov ✗ Not found
cwpm.acf.gov ✗ Not found
datadashboard.fda.gov ✗ Not found
datadiscovery.nlm.nih.gov ✗ Not found
datasetcatalog.nlm.nih.gov ✗ Not found
dbgap.ncbi.nlm.nih.gov ✗ Not found
dev.ncbi.nlm.nih.gov ✗ Not found
digitalgallery.nlm.nih.gov ✗ Not found
direct.fda.gov ✗ Not found
dnpao-dtm.cdc.gov ✗ Not found
documentation.uts.nlm.nih.gov ✗ Not found
ephtracking.cdc.gov ✗ Not found
finddoxypep.cdc.gov ✗ Not found
findingaids.nlm.nih.gov ✗ Not found
fissweb.fda.gov ✗ Not found
formbuilder.nlm.nih.gov ✗ Not found
gettested.cdc.gov ✗ Not found
grants.nih.gov ✗ Not found
gudid.fda.gov ✗ Not found
hfp-onlinesubmissions.fda.gov ✗ Not found
hfpappexternal.fda.gov ✗ Not found
hivinfo.nih.gov ✗ Not found
hivrisk.cdc.gov ✗ Not found
id.nlm.nih.gov ✗ Not found
imagic.nlm.nih.gov ✗ Not found
indexcat.nlm.nih.gov ✗ Not found
internal.ncbi.nlm.nih.gov ✗ Not found
intranet.ncbi.nlm.nih.gov ✗ Not found
jats.nlm.nih.gov ✗ Not found
jobs.cdc.gov ✗ Not found
labels.fda.gov ✗ Not found
learn.nlm.nih.gov ✗ Not found
medicineonscreen.nlm.nih.gov ✗ Not found
meshb-prev.nlm.nih.gov ✗ Not found
meshb.nlm.nih.gov ✗ Not found
millionhearts.hhs.gov ✗ Not found
mpris.fda.gov ✗ Not found
nationaldppcsc.cdc.gov ✗ Not found
ncbiinsights.ncbi.nlm.nih.gov ✗ Not found
nccd.cdc.gov ✗ Not found
nchsdata.cdc.gov ✗ Not found
ncsacw.acf.gov ✗ Not found
ndc.services.cdc.gov ✗ Not found
nfr.cdc.gov ✗ Not found
niaaa.nih.gov ✗ Not found
niaid.nih.gov ✗ Not found
nichd.nih.gov ✗ Not found
nidcd.nih.gov ✗ Not found
niehs.nih.gov ✗ Not found
nigms.nih.gov ✗ Not found
nlmdirector.nlm.nih.gov ✗ Not found
ntp.niehs.nih.gov ✗ Not found
places.cdc.gov ✗ Not found
precision.fda.gov ✗ Not found
preview.ncbi.nlm.nih.gov ✗ Not found
prstest.clinicaltrials.gov ✗ Not found
pubchem.ncbi.nlm.nih.gov ✗ Not found
purplebooksearch.fda.gov ✗ Not found
qa.ncbi.nlm.nih.gov ✗ Not found
register.clinicaltrials.gov ✗ Not found
search.cdc.gov ✗ Not found
selectagents.gov ✗ Not found
support.nlm.nih.gov ✗ Not found
testpubchem.ncbi.nlm.nih.gov ✗ Not found
thecommunityguide.org ✗ Not found
tools.cdc.gov ✗ Not found
trace.ncbi.nlm.nih.gov ✗ Not found
vaccines.gov ✗ Not found
vsearch.nlm.nih.gov ✗ Not found
wisqars.cdc.gov ✗ Not found
wonder.cdc.gov ✗ Not found
www.accessdata.fda.gov ✗ Not found
www.cdc.gov ✗ Not found
www2.cdc.gov ✗ Not found
wwwn.cdc.gov ✗ Not found
wwwnc.cdc.gov ✗ Not found
youthonline.cdc.gov ✗ Not found
yrbs-explorer.services.cdc.gov ✗ Not found

OMB Memorandum M-17-06 and the 21st Century IDEA Act require federal agency public websites to provide links to a Privacy Policy, Contact page, and FOIA page. These were among the compliance criteria benchmarked by the performance.gov federal website performance initiative (no longer active, but the underlying requirements remain in force).

47 of 147 domains (32%) have all three required link types detectable at standard URL paths.

Required federal link detection results for 147 checked domains
Link Type Policy Domains with Link Missing Domains
Privacy Policy OMB M-03-22 / M-17-06 54 / 147 (37%) access.fda.gov, accessdata.fda.gov, account-dev.ncbi.nlm.nih.gov, account.ncbi.nlm.nih.gov, animaldrugsatfda.fda.gov, auth.nih.gov, beta.ncbi.nlm.nih.gov, blast.ncbi.nlm.nih.gov, blogs.cdc.gov, cdn.clinicaltrials.gov, cdrh-rst.fda.gov, circulatingnow.nlm.nih.gov, classification.nlm.nih.gov, clinicaltables.nlm.nih.gov, clint13.be-md.ncbi.nlm.nih.gov, contact.preprod.fda.gov, cwpm.acf.gov, datadashboard.fda.gov, datadiscovery.nlm.nih.gov, datasetcatalog.nlm.nih.gov, dbgap.ncbi.nlm.nih.gov, dev.ncbi.nlm.nih.gov, digitalgallery.nlm.nih.gov, direct.fda.gov, dnpao-dtm.cdc.gov, documentation.uts.nlm.nih.gov, ephtracking.cdc.gov, finddoxypep.cdc.gov, findingaids.nlm.nih.gov, fissweb.fda.gov, formbuilder.nlm.nih.gov, gettested.cdc.gov, grants.nih.gov, gudid.fda.gov, hfp-onlinesubmissions.fda.gov, hfpappexternal.fda.gov, hivinfo.nih.gov, hivrisk.cdc.gov, id.nlm.nih.gov, imagic.nlm.nih.gov, indexcat.nlm.nih.gov, internal.ncbi.nlm.nih.gov, intranet.ncbi.nlm.nih.gov, jats.nlm.nih.gov, jobs.cdc.gov, labels.fda.gov, learn.nlm.nih.gov, medicineonscreen.nlm.nih.gov, meshb-prev.nlm.nih.gov, meshb.nlm.nih.gov, millionhearts.hhs.gov, mpris.fda.gov, nationaldppcsc.cdc.gov, ncbiinsights.ncbi.nlm.nih.gov, nccd.cdc.gov, nchsdata.cdc.gov, ncsacw.acf.gov, ndc.services.cdc.gov, nfr.cdc.gov, niaaa.nih.gov, niaid.nih.gov, nichd.nih.gov, nidcd.nih.gov, niehs.nih.gov, nigms.nih.gov, nlmdirector.nlm.nih.gov, ntp.niehs.nih.gov, places.cdc.gov, precision.fda.gov, preview.ncbi.nlm.nih.gov, prstest.clinicaltrials.gov, pubchem.ncbi.nlm.nih.gov, pubmed.ncbi.nlm.nih.gov, purplebooksearch.fda.gov, qa.ncbi.nlm.nih.gov, register.clinicaltrials.gov, search.cdc.gov, selectagents.gov, support.nlm.nih.gov, testpubchem.ncbi.nlm.nih.gov, thecommunityguide.org, tools.cdc.gov, trace.ncbi.nlm.nih.gov, vaccines.gov, vsearch.nlm.nih.gov, wisqars.cdc.gov, wonder.cdc.gov, www.accessdata.fda.gov, www2.cdc.gov, wwwn.cdc.gov, wwwnc.cdc.gov, youthonline.cdc.gov, yrbs-explorer.services.cdc.gov
Contact Page OMB M-17-06 58 / 147 (39%) access.fda.gov, accessdata.fda.gov, account-dev.ncbi.nlm.nih.gov, account.ncbi.nlm.nih.gov, animaldrugsatfda.fda.gov, auth.nih.gov, beta.ncbi.nlm.nih.gov, blast.ncbi.nlm.nih.gov, blogs.cdc.gov, cdn.clinicaltrials.gov, circulatingnow.nlm.nih.gov, classification.nlm.nih.gov, clinicaltables.nlm.nih.gov, clint13.be-md.ncbi.nlm.nih.gov, contact.preprod.fda.gov, cwpm.acf.gov, datadashboard.fda.gov, datadiscovery.nlm.nih.gov, datasetcatalog.nlm.nih.gov, dbgap.ncbi.nlm.nih.gov, dev.ncbi.nlm.nih.gov, direct.fda.gov, dnpao-dtm.cdc.gov, documentation.uts.nlm.nih.gov, ephtracking.cdc.gov, finddoxypep.cdc.gov, findingaids.nlm.nih.gov, fissweb.fda.gov, formbuilder.nlm.nih.gov, gettested.cdc.gov, gudid.fda.gov, hfp-onlinesubmissions.fda.gov, hfpappexternal.fda.gov, hivrisk.cdc.gov, id.nlm.nih.gov, imagic.nlm.nih.gov, indexcat.nlm.nih.gov, internal.ncbi.nlm.nih.gov, intranet.ncbi.nlm.nih.gov, jats.nlm.nih.gov, jobs.cdc.gov, labels.fda.gov, learn.nlm.nih.gov, meshb-prev.nlm.nih.gov, meshb.nlm.nih.gov, millionhearts.hhs.gov, mpris.fda.gov, nationaldppcsc.cdc.gov, ncbiinsights.ncbi.nlm.nih.gov, nccd.cdc.gov, nchsdata.cdc.gov, ncsacw.acf.gov, ndc.services.cdc.gov, nfr.cdc.gov, niaaa.nih.gov, niaid.nih.gov, nichd.nih.gov, nidcd.nih.gov, niehs.nih.gov, nigms.nih.gov, nlmdirector.nlm.nih.gov, ntp.niehs.nih.gov, places.cdc.gov, precision.fda.gov, preview.ncbi.nlm.nih.gov, prstest.clinicaltrials.gov, pubchem.ncbi.nlm.nih.gov, pubmed.ncbi.nlm.nih.gov, purplebooksearch.fda.gov, qa.ncbi.nlm.nih.gov, register.clinicaltrials.gov, report.nih.gov, search.cdc.gov, selectagents.gov, support.nlm.nih.gov, testpubchem.ncbi.nlm.nih.gov, thecommunityguide.org, tools.cdc.gov, trace.ncbi.nlm.nih.gov, vaccines.gov, vsearch.nlm.nih.gov, wisqars.cdc.gov, wonder.cdc.gov, www.accessdata.fda.gov, www2.cdc.gov, wwwn.cdc.gov, wwwnc.cdc.gov, youthonline.cdc.gov, yrbs-explorer.services.cdc.gov
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Section 508: Legal Requirements vs. Best Practices

Section 508 of the Rehabilitation Act was enacted in 1998 and requires U.S. federal agencies to make their electronic and information technology accessible to people with disabilities. The technical standards were significantly updated through the ICT Accessibility Standards refresh, which became effective in January 2018 — the same year Apple celebrated the 10th anniversary of the iPhone. That refresh incorporated WCAG 2.0 Level AA (published in 2008) as the baseline for web content.

The web has changed dramatically since then. What agencies are legally required to meet today is built on a standard from 2008 — the same era as the original iPhone. Agencies should treat WCAG 2.0 AA as the floor, not the ceiling.

Legal Requirement

WCAG 2.0 Level AA (published 2008)

Referenced by the Section 508 ICT Standards refresh (effective 2018). Agencies must meet these 38 success criteria to satisfy their Section 508 obligations for web content.

  • Text alternatives for non-text content
  • Captions and audio descriptions for multimedia
  • Keyboard accessibility and focus management
  • Minimum color contrast (4.5:1 for normal text)
  • No seizure-inducing content
  • Consistent navigation and labeling
  • Error identification and correction

Section 508 web content requirements (E205)

Best Practices

WCAG 2.1 and 2.2 Level AA (published 2018 and 2023)

These later versions add criteria that reflect how the web actually works today — mobile devices, cognitive accessibility, and modern authentication patterns — and are strongly recommended for any agency aiming to serve all Americans. The US Federal Government is one of the last to use the legacy WCAG 2.0 AA Standard, as it was developed ~2 decades ago.

  • WCAG 2.1 (2018): 17 new criteria for mobile, low vision, and cognitive accessibility
  • WCAG 2.2 (2023): 9 more criteria for authentication and cognitive tasks, removing the outdated "Parsing" criterion
  • W3C now recommends WCAG 2.2 as the current normative standard for new and updated content

What is new in WCAG 2.2 · WCAG 2.2 specification

The scores and findings in this report are based on automated checks aligned with WCAG 2.x rules surfaced by axe-core. Passing automated checks is necessary but not sufficient: manual testing with assistive technologies is required to verify true conformance and to catch barriers that automation cannot detect.

Take Action

Today's scan identified 265 accessibility barriers across the most-visited U.S. government websites, affecting an estimated 840,000 Americans with disabilities. Here is how you can help.

https://ncbi.nlm.nih.gov

Lighthouse Accessibility Score: 91

Axe findings: 3

Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-84eeaaec

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~100,973 people potentially excluded (2.4% prevalence × 4,207,188 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~180,909 people potentially excluded (4.3% prevalence × 4,207,188 affected page loads)

Affected elements (6):

Element 1 HHS-c63af8a0

Element path: ul.rss_items > li#ui-ncbiexpander-2 > div.expanderWrapper > p.date

Snippet:

<p class="date">

Label: 26 Mar 2026

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.54 (foreground color: #888888, background color: #ffffff, font size: 7.8pt (10.4px), font weight: normal). Expected contrast ratio of 4.5:1

Element 2 HHS-ff3b1feb

Element path: ul.rss_items > li#ui-ncbiexpander-2 > div.expanderWrapper > p.desc

Snippet:

<p class="desc">

Label: NCBI, part of the National Library of Medicine (NLM), is excited to announce ou…

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1

Element 3 HHS-39f7da53

Element path: ul.rss_items > li#ui-ncbiexpander-3 > div.expanderWrapper > p.date

Snippet:

<p class="date">

Label: 25 Mar 2026

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.54 (foreground color: #888888, background color: #ffffff, font size: 7.8pt (10.4px), font weight: normal). Expected contrast ratio of 4.5:1

Element 4 HHS-ad3c779d

Element path: ul.rss_items > li#ui-ncbiexpander-3 > div.expanderWrapper > p.desc

Snippet:

<p class="desc">

Label: To ensure the security and long-term stability of our data delivery infrastruct…

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1

Element 5 HHS-0643ea88

Element path: ul.rss_items > li#ui-ncbiexpander-4 > div.expanderWrapper > p.date

Snippet:

<p class="date">

Label: 24 Mar 2026

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.54 (foreground color: #888888, background color: #ffffff, font size: 7.8pt (10.4px), font weight: normal). Expected contrast ratio of 4.5:1

Element 6 HHS-4d001d64

Element path: ul.rss_items > li#ui-ncbiexpander-4 > div.expanderWrapper > p.desc

Snippet:

<p class="desc">

Label: RefSeq release 234 is now available online and from the FTP site! You can acces…

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-ebb2bc0f

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~92,558 people potentially excluded (2.2% prevalence × 4,207,188 affected page loads) People with limited reach, strength, or stamina. Estimated ~244,017 people potentially excluded (5.8% prevalence × 4,207,188 affected page loads)

Affected elements (2):

Element 1 HHS-5d46b830

Element path: div.row > div.col-lg-3 > p > a.text-white

Snippet:

<a href="https://www.nlm.nih.gov/accessibility.html" class="text-white">

Label: Accessibility

How to fix: Fix any of the following:

  • Target has insufficient size (77.3px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23.8px instead of at least 24px.

Element 2 HHS-5d46b830

Element path: div.row > div.col-lg-3 > p > a.text-white

Snippet:

<a href="https://www.nlm.nih.gov/careers/careers.html" class="text-white">

Label: Careers

How to fix: Fix any of the following:

  • Target has insufficient size (49.8px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23.8px instead of at least 24px.
Document does not have a main landmark. (rule: landmark-one-main) HHS-1deff51a

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~42,072 people potentially excluded (1.0% prevalence × 4,207,188 affected page loads) People who are deaf and cannot hear audio content. Estimated ~12,622 people potentially excluded (0.3% prevalence × 4,207,188 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~92,558 people potentially excluded (2.2% prevalence × 4,207,188 affected page loads)

Affected elements (1):

Element 1 HHS-ab2a015f

Element path: html

Snippet:

<html lang="en">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://cdc.gov

Lighthouse Accessibility Score: 91

Axe findings: 3

Links do not have a discernible name (rule: link-name) HHS-3e7fec37

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~6,937 people potentially excluded (1.0% prevalence × 693,666 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2,081 people potentially excluded (0.3% prevalence × 693,666 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~15,261 people potentially excluded (2.2% prevalence × 693,666 affected page loads)

Affected elements (1):

Element 1 HHS-2428d6f9

Element path: nav.mobile-navbar > div.mobile-navbar_top > div.d-flex > a#cdc-mobile-search-toggle

Snippet:

<a id="cdc-mobile-search-toggle" class="nav-link" href="#" aria-controls="cdc-mobile-search-form">

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
Skip links are not focusable. (rule: skip-link) HHS-b3698d5b

Including a skip link can help users skip to the main content to save time. Learn more about skip links.

Disabilities affected: People who are blind or have no functional vision. Estimated ~6,937 people potentially excluded (1.0% prevalence × 693,666 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2,081 people potentially excluded (0.3% prevalence × 693,666 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~15,261 people potentially excluded (2.2% prevalence × 693,666 affected page loads)

Affected elements (1):

Element 1 HHS-d7fc04fe

Element path: body.cdc-post-type--cdc-homepage > div#skipmenu > a.skippy

Snippet:

<a class="skippy visually-hidden-focusable" href="#headerSearch" tabindex="2">

Label: Skip to search

How to fix: Fix any of the following:

  • No skip link target
Some elements have a `[tabindex]` value greater than 0 (rule: tabindex) HHS-6eb16f7d

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Disabilities affected: People who are blind or have no functional vision. Estimated ~6,937 people potentially excluded (1.0% prevalence × 693,666 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2,081 people potentially excluded (0.3% prevalence × 693,666 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~15,261 people potentially excluded (2.2% prevalence × 693,666 affected page loads)

Affected elements (3):

Element 1 HHS-2b0faadb

Element path: body.cdc-post-type--cdc-homepage > div#skipmenu > a.skippy

Snippet:

<a class="skippy visually-hidden-focusable" href="#content" tabindex="1">

Label: Skip to site content

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 2 HHS-2b0faadb

Element path: body.cdc-post-type--cdc-homepage > div#skipmenu > a.skippy

Snippet:

<a class="skippy visually-hidden-focusable" href="#headerSearch" tabindex="2">

Label: Skip to search

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 3 HHS-3994b993

Element path: div#hero-carousel > div.carousel-indicators > div.carousel-indicators-wrapper > button#animation-toggle

Snippet:

<button id="animation-toggle" aria-pressed="true" tabindex="3">

Label: Pause carousel

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Download full axe findings JSON | Download full axe findings CSV

https://medlineplus.gov

Lighthouse Accessibility Score: 95

Axe findings: 2

Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-80cca99a

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~11,170 people potentially excluded (2.2% prevalence × 507,716 affected page loads) People with limited reach, strength, or stamina. Estimated ~29,448 people potentially excluded (5.8% prevalence × 507,716 affected page loads)

Affected elements (16):

Element 1 HHS-e1d41724

Element path: div.footer1 > ul.secondarynav > li > a

Snippet:

<a href="https://medlineplus.gov/about/">

Label: About MedlinePlus

How to fix: Fix any of the following:

  • Target has insufficient size (110.9px by 21.4px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 21.4px instead of at least 24px.

Element 2 HHS-e1d41724

Element path: div.footer1 > ul.secondarynav > li > a

Snippet:

<a href="https://medlineplus.gov/whatsnew/">

Label: What's New

How to fix: Fix any of the following:

  • Target has insufficient size (69.8px by 21.4px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 21.4px instead of at least 24px.

Element 3 HHS-e1d41724

Element path: div.footer1 > ul.secondarynav > li > a

Snippet:

<a href="https://medlineplus.gov/sitemap.html">

Label: Site Map

How to fix: Fix any of the following:

  • Target has insufficient size (52.3px by 21.4px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 21.4px instead of at least 24px.

Element 4 HHS-e1d41724

Element path: div.footer1 > ul.secondarynav > li > a

Snippet:

<a href="https://support.nlm.nih.gov/knowledgebase/category/?id=CAT-01231&amp;category=…" target="_blank">

Label: Customer Support

How to fix: Fix any of the following:

  • Target has insufficient size (108.2px by 21.4px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 21.8px instead of at least 24px.

Element 5 HHS-e9921650

Element path: div.footer2 > ul > li > a

Snippet:

<a href=" https://www.nlm.nih.gov/web_policies.html" target="_blank">

Label: NLM Web Policies

How to fix: Fix any of the following:

  • Target has insufficient size (106px by 21.4px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 21.4px instead of at least 24px.

Element 6 HHS-e9921650

Element path: div.footer2 > ul > li > a

Snippet:

<a href="https://medlineplus.gov/about/using/usingcontent/">

Label: Copyright

How to fix: Fix any of the following:

  • Target has insufficient size (59.6px by 21.4px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 21.4px instead of at least 24px.

Element 7 HHS-e9921650

Element path: div.footer2 > ul > li > a

Snippet:

<a href="https://medlineplus.gov/accessibility.html">

Label: Accessibility

How to fix: Fix any of the following:

  • Target has insufficient size (76.3px by 21.4px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 21.4px instead of at least 24px.

Element 8 HHS-e9921650

Element path: div.footer2 > ul > li > a

Snippet:

<a href="https://medlineplus.gov/about/using/criteria/">

Label: Guidelines for Links

How to fix: Fix any of the following:

  • Target has insufficient size (118.2px by 21.4px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.4px instead of at least 24px.

Element 9 HHS-e9921650

Element path: div.footer2 > ul > li > a

Snippet:

<a href="https://medlineplus.gov/plugins.html">

Label: Viewers & Players

How to fix: Fix any of the following:

  • Target has insufficient size (106px by 21.4px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.4px instead of at least 24px.

Element 10 HHS-e9921650

Element path: div.footer2 > ul > li > a

Snippet:

<a href="https://www.hhs.gov/vulnerability-disclosure-policy/index.html" target="_blank">

Label: HHS Vulnerability Disclosure

How to fix: Fix any of the following:

  • Target has insufficient size (167.7px by 21.4px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.2px instead of at least 24px.

Element 11 HHS-e9921650

Element path: div.footer2 > ul > li > a

Snippet:

<a href="https://medlineplus.gov/medlineplus-connect/">

Label: MedlinePlus Connect for EHRs

How to fix: Fix any of the following:

  • Target has insufficient size (178.8px by 21.4px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.2px instead of at least 24px.

Element 12 HHS-e9921650

Element path: div.footer2 > ul > li > a

Snippet:

<a href="https://medlineplus.gov/about/developers/">

Label: For Developers

How to fix: Fix any of the following:

  • Target has insufficient size (90.2px by 21.4px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 21.4px instead of at least 24px.

Element 13 HHS-a99734ae

Element path: div#mplus-footer > div.footer2 > div.address > a

Snippet:

<a href="https://www.hhs.gov" target="_blank">

Label: U.S. Department of Health and Human Services

How to fix: Fix any of the following:

  • Target has insufficient size (388px by 21px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18px instead of at least 24px.

Element 14 HHS-a99734ae

Element path: div#mplus-footer > div.footer2 > div.address > a

Snippet:

<a href="https://www.nih.gov" target="_blank">

Label: National Institutes of Health

How to fix: Fix any of the following:

  • Target has insufficient size (388px by 21px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18px instead of at least 24px.

Element 15 HHS-a99734ae

Element path: div#mplus-footer > div.footer2 > div.address > a

Snippet:

<a target="_blank" href="https://www.nih.gov/icd/od/foia/index.htm">

Label: FOIA

How to fix: Fix any of the following:

  • Target has insufficient size (388px by 21px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18px instead of at least 24px.

Element 16 HHS-a99734ae

Element path: div#mplus-footer > div.footer2 > div.address > a

Snippet:

<a target="_blank" href="https://www.usa.gov/">

Label: USA.gov

How to fix: Fix any of the following:

  • Target has insufficient size (388px by 21px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18px instead of at least 24px.
Document does not have a main landmark. (rule: landmark-one-main) HHS-98ee53f0

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~5,077 people potentially excluded (1.0% prevalence × 507,716 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1,523 people potentially excluded (0.3% prevalence × 507,716 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~11,170 people potentially excluded (2.2% prevalence × 507,716 affected page loads)

Affected elements (1):

Element 1 HHS-98fcfafe

Element path: html#home

Snippet:

<html lang="en" id="home" class="us" data-root="https://medlineplus.gov/">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://cms.gov

Lighthouse Accessibility Score: 90

Axe findings: 2

`[role]`s are not contained by their required parent element (rule: aria-required-parent) HHS-f9019603

Some ARIA child roles must be contained by specific parent roles to properly perform their intended accessibility functions. Learn more about ARIA roles and required parent element.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4,341 people potentially excluded (1.0% prevalence × 434,058 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1,302 people potentially excluded (0.3% prevalence × 434,058 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~9,549 people potentially excluded (2.2% prevalence × 434,058 affected page loads)

Affected elements (5):

Element 1 HHS-fc4a7ef9

Element path: div.field__item > div.paragraph > div.ds-u-lg-display--none > button#trigger-tabs-1274162189

Snippet:

<button type="button" id="trigger-tabs-1274162189" aria-expanded="false" class="responsive-tabs__tab-button--mobile ds-u-display--flex" role="tab" aria-controls="tabs-1274162189">

How to fix: Fix any of the following:

  • Required ARIA parent role not present: tablist

Element 2 HHS-2b4463c0

Element path: div.field__item > div.paragraph > div.ds-u-lg-display--none > button#trigger-tabs-949090800

Snippet:

<button type="button" id="trigger-tabs-949090800" aria-expanded="false" class="responsive-tabs__tab-button--mobile ds-u-display--flex" role="tab" aria-controls="tabs-949090800">

How to fix: Fix any of the following:

  • Required ARIA parent role not present: tablist

Element 3 HHS-8041ff2c

Element path: div.field__item > div.paragraph > div.ds-u-lg-display--none > button#trigger-tabs-251365160

Snippet:

<button type="button" id="trigger-tabs-251365160" aria-expanded="false" class="responsive-tabs__tab-button--mobile ds-u-display--flex" role="tab" aria-controls="tabs-251365160">

How to fix: Fix any of the following:

  • Required ARIA parent role not present: tablist

Element 4 HHS-7df82ae1

Element path: div.field__item > div.paragraph > div.ds-u-lg-display--none > button#trigger-tabs-894877984

Snippet:

<button type="button" id="trigger-tabs-894877984" aria-expanded="false" class="responsive-tabs__tab-button--mobile ds-u-display--flex" role="tab" aria-controls="tabs-894877984">

How to fix: Fix any of the following:

  • Required ARIA parent role not present: tablist

Element 5 HHS-50a4672b

Element path: div.field__item > div.paragraph > div.ds-u-lg-display--none > button#trigger-tabs-744320319

Snippet:

<button type="button" id="trigger-tabs-744320319" aria-expanded="false" class="responsive-tabs__tab-button--mobile ds-u-display--flex" role="tab" aria-controls="tabs-744320319">

How to fix: Fix any of the following:

  • Required ARIA parent role not present: tablist
Buttons do not have an accessible name (rule: button-name) HHS-756f8154

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4,341 people potentially excluded (1.0% prevalence × 434,058 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1,302 people potentially excluded (0.3% prevalence × 434,058 affected page loads)

Affected elements (5):

Element 1 HHS-e1f320ba

Element path: div.field__item > div.paragraph > div.ds-u-lg-display--none > button#trigger-tabs-1274162189

Snippet:

<button type="button" id="trigger-tabs-1274162189" aria-expanded="false" class="responsive-tabs__tab-button--mobile ds-u-display--flex" role="tab" aria-controls="tabs-1274162189">

How to fix: Fix any of the following:

  • Element does not have inner text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • Element's default semantics were not overridden with role="none" or role="presentation"

Element 2 HHS-0ef289a9

Element path: div.field__item > div.paragraph > div.ds-u-lg-display--none > button#trigger-tabs-949090800

Snippet:

<button type="button" id="trigger-tabs-949090800" aria-expanded="false" class="responsive-tabs__tab-button--mobile ds-u-display--flex" role="tab" aria-controls="tabs-949090800">

How to fix: Fix any of the following:

  • Element does not have inner text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • Element's default semantics were not overridden with role="none" or role="presentation"

Element 3 HHS-e8f56d47

Element path: div.field__item > div.paragraph > div.ds-u-lg-display--none > button#trigger-tabs-251365160

Snippet:

<button type="button" id="trigger-tabs-251365160" aria-expanded="false" class="responsive-tabs__tab-button--mobile ds-u-display--flex" role="tab" aria-controls="tabs-251365160">

How to fix: Fix any of the following:

  • Element does not have inner text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • Element's default semantics were not overridden with role="none" or role="presentation"

Element 4 HHS-99745a04

Element path: div.field__item > div.paragraph > div.ds-u-lg-display--none > button#trigger-tabs-894877984

Snippet:

<button type="button" id="trigger-tabs-894877984" aria-expanded="false" class="responsive-tabs__tab-button--mobile ds-u-display--flex" role="tab" aria-controls="tabs-894877984">

How to fix: Fix any of the following:

  • Element does not have inner text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • Element's default semantics were not overridden with role="none" or role="presentation"

Element 5 HHS-4ca6474d

Element path: div.field__item > div.paragraph > div.ds-u-lg-display--none > button#trigger-tabs-744320319

Snippet:

<button type="button" id="trigger-tabs-744320319" aria-expanded="false" class="responsive-tabs__tab-button--mobile ds-u-display--flex" role="tab" aria-controls="tabs-744320319">

How to fix: Fix any of the following:

  • Element does not have inner text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • Element's default semantics were not overridden with role="none" or role="presentation"

Download full axe findings JSON | Download full axe findings CSV

https://fda.gov

Lighthouse Accessibility Score: 95

Axe findings: 2

Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-ecc5de53

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~3,430 people potentially excluded (1.0% prevalence × 342,982 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1,029 people potentially excluded (0.3% prevalence × 342,982 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~7,546 people potentially excluded (2.2% prevalence × 342,982 affected page loads)

Affected elements (1):

Element 1 HHS-b98a7353

Element path: div.fda-ft-container > div.fda-ft-heading > div.fda-ft-heading-text > h3.fda-ft-heading-title

Snippet:

<h3 class="fda-ft-heading-title">

Label: Featured Topics

How to fix: Fix any of the following:

  • Heading order invalid
Some elements have a `[tabindex]` value greater than 0 (rule: tabindex) HHS-4d2e97e5

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Disabilities affected: People who are blind or have no functional vision. Estimated ~3,430 people potentially excluded (1.0% prevalence × 342,982 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1,029 people potentially excluded (0.3% prevalence × 342,982 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~7,546 people potentially excluded (2.2% prevalence × 342,982 affected page loads)

Affected elements (3):

Element 1 HHS-16ddb43c

Element path: div#quicklinks > ul.list-inline > li > a.btn

Snippet:

<a href="#main-content" class="btn btn-default margin-top-3" tabindex="1" data-once="download-role-button lang-fix-multilingual">

Label: Skip to main content

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 2 HHS-16ddb43c

Element path: div#quicklinks > ul.list-inline > li > a.btn

Snippet:

<a href="#search-form" class="btn btn-default margin-top-3" tabindex="1" data-once="download-role-button lang-fix-multilingual">

Label: Skip to FDA Search

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 3 HHS-16ddb43c

Element path: div#quicklinks > ul.list-inline > li > a.btn

Snippet:

<a href="#footer" class="btn btn-default margin-top-3" tabindex="1" data-once="download-role-button lang-fix-multilingual">

Label: Skip to footer links

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Download full axe findings JSON | Download full axe findings CSV

https://clinicaltrials.gov

Lighthouse Accessibility Score: 97

Axe findings: 2

Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-413fb5f5

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~5,140 people potentially excluded (2.4% prevalence × 214,167 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~9,209 people potentially excluded (4.3% prevalence × 214,167 affected page loads)

Affected elements (1):

Element 1 HHS-b5f225d0

Element path: ctg-home-search-panel > div.home-search-panel > div.search-panel-header > span

Snippet:

<span _ngcontent-ng-c1977509329="">

Label: (all filters optional)

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.35 (foreground color: #71767a, background color: #f9f9f7, font size: 10.5pt (14px), font weight: bold). Expected contrast ratio of 4.5:1
Elements with visible text labels do not have matching accessible names. (rule: label-content-name-mismatch) HHS-b60aee79

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Disabilities affected: People who are blind or have no functional vision. Estimated ~2,142 people potentially excluded (1.0% prevalence × 214,167 affected page loads) People with low vision who need magnification or high contrast. Estimated ~5,140 people potentially excluded (2.4% prevalence × 214,167 affected page loads) People who are deaf and cannot hear audio content. Estimated ~643 people potentially excluded (0.3% prevalence × 214,167 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~4,712 people potentially excluded (2.2% prevalence × 214,167 affected page loads)

Affected elements (1):

Element 1 HHS-e0641a2a

Element path: div.usa-alert__body > div.usa-accordion > div.usa-accordion__heading > button.usa-accordion__button

Snippet:

<button _ngcontent-ng-c232542777="" aria-controls="disclaimer-extended-section" class="usa-accordion__button" aria-expanded="false" aria-label="Expand disclaimer">

Label: The U.S. government does not review or approve the safety and science of all st…

How to fix: Fix any of the following:

  • Text inside the element is not included in the accessible name

Download full axe findings JSON | Download full axe findings CSV

https://nih.gov

Lighthouse Accessibility Score: 96

Axe findings: 1

Links rely on color to be distinguishable. (rule: link-in-text-block) HHS-3c20b2e6

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~2,498 people potentially excluded (2.4% prevalence × 104,068 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~4,475 people potentially excluded (4.3% prevalence × 104,068 affected page loads)

Affected elements (1):

Element 1 HHS-67550629

Element path: div.usa-identifier__container > div.usa-identifier__identity > p.usa-identifier__identity-disclaimer > a.ext

Snippet:

<a href="http://www.hhs.gov/" class="ext" data-extlink="" target="_blank" rel="noopener nofollow noreferrer">

Label: Department of Health and Human Services

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 1.31:1 with the surrounding text. (Minimum contrast is 3:1, link text: #dfe1e2, surrounding text: #ffffff)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Download full axe findings JSON | Download full axe findings CSV

https://blast.ncbi.nlm.nih.gov

Lighthouse Accessibility Score: 91

Axe findings: 4

Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-0bf22837

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~1,930 people potentially excluded (2.4% prevalence × 80,416 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~3,458 people potentially excluded (4.3% prevalence × 80,416 affected page loads)

Affected elements (6):

Element 1 HHS-763bfd9d

Element path: div#blast_desc > span > a#moreHelp > span.ui-ncbitoggler-master-text

Snippet:

<span class="ui-ncbitoggler-master-text">

Label: Learn more

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.25 (foreground color: #0071bc, background color: #e4eaf6, font size: 12.8pt (17px), font weight: normal). Expected contrast ratio of 4.5:1

Element 2 HHS-8797d11b

Element path: div#top > div#gn_search > form#fgs > input#qorganism

Snippet:

<input name="TAXID" size="55" type="text" topoption="" id="qorganism" value="" data-jigconfig="dictionary:'bdb_euk_ref_viruses_rep_genomes_sg',isCrossDomain:false" autocomplete="off" data-jig="ncbiautocomplete" class="reset bl orgHint" suggesthint="Enter organism common name, scientific name, or tax id" aria-haspopup="true" aria-autocomplete="list" role="textbox">

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 2.32 (foreground color: #aaaaaa, background color: #ffffff, font size: 11.5pt (15.3px), font weight: normal). Expected contrast ratio of 4.5:1

Element 3 HHS-c4eb6590

Element path: div#gn_search > ul > li > a

Snippet:

<a href="Blast.cgi?PAGE_TYPE=BlastSearch&amp;BLAST_SPEC=OGP__9606__9558&amp;LINK_LOC=blasth…">

Label: Human

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.25 (foreground color: #0071bc, background color: #e4eaf6, font size: 10.8pt (14.45px), font weight: normal). Expected contrast ratio of 4.5:1

Element 4 HHS-c4eb6590

Element path: div#gn_search > ul > li > a

Snippet:

<a href="Blast.cgi?PAGE_TYPE=BlastSearch&amp;BLAST_SPEC=OGP__10090__9559&amp;LINK_LOC=blast…">

Label: Mouse

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.25 (foreground color: #0071bc, background color: #e4eaf6, font size: 10.8pt (14.45px), font weight: normal). Expected contrast ratio of 4.5:1

Element 5 HHS-c4eb6590

Element path: div#gn_search > ul > li > a

Snippet:

<a href="Blast.cgi?PAGE_TYPE=BlastSearch&amp;BLAST_SPEC=OGP__10116__10621&amp;LINK_LOC=blas…">

Label: Rat

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.25 (foreground color: #0071bc, background color: #e4eaf6, font size: 10.8pt (14.45px), font weight: normal). Expected contrast ratio of 4.5:1

Element 6 HHS-c4eb6590

Element path: div#gn_search > ul > li > a

Snippet:

<a href="Blast.cgi?PAGE_TYPE=BlastSearch&amp;BLAST_SPEC=MicrobialGenomes">

Label: Microbes

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.25 (foreground color: #0071bc, background color: #e4eaf6, font size: 10.8pt (14.45px), font weight: normal). Expected contrast ratio of 4.5:1
Skip links are not focusable. (rule: skip-link) HHS-30df99f4

Including a skip link can help users skip to the main content to save time. Learn more about skip links.

Disabilities affected: People who are blind or have no functional vision. Estimated ~804 people potentially excluded (1.0% prevalence × 80,416 affected page loads) People who are deaf and cannot hear audio content. Estimated ~241 people potentially excluded (0.3% prevalence × 80,416 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~1,769 people potentially excluded (2.2% prevalence × 80,416 affected page loads)

Affected elements (1):

Element 1 HHS-97880bba

Element path: body#type-d > header.ncbi-header > a.usa-skipnav

Snippet:

<a class="usa-skipnav" href="#mainCont">

Label: Skip to main page content

How to fix: Fix any of the following:

  • No skip link target
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-b60ad374

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~1,769 people potentially excluded (2.2% prevalence × 80,416 affected page loads) People with limited reach, strength, or stamina. Estimated ~4,664 people potentially excluded (5.8% prevalence × 80,416 affected page loads)

Affected elements (4):

Element 1 HHS-ce710e53

Element path: div#gn_search > ul > li > a

Snippet:

<a href="Blast.cgi?PAGE_TYPE=BlastSearch&amp;BLAST_SPEC=OGP__9606__9558&amp;LINK_LOC=blasth…">

Label: Human

How to fix: Fix any of the following:

  • Target has insufficient size (46.7px by 17px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23px instead of at least 24px.

Element 2 HHS-ce710e53

Element path: div#gn_search > ul > li > a

Snippet:

<a href="Blast.cgi?PAGE_TYPE=BlastSearch&amp;BLAST_SPEC=OGP__10090__9559&amp;LINK_LOC=blast…">

Label: Mouse

How to fix: Fix any of the following:

  • Target has insufficient size (43.9px by 17px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23px instead of at least 24px.

Element 3 HHS-ce710e53

Element path: div#gn_search > ul > li > a

Snippet:

<a href="Blast.cgi?PAGE_TYPE=BlastSearch&amp;BLAST_SPEC=OGP__10116__10621&amp;LINK_LOC=blas…">

Label: Rat

How to fix: Fix any of the following:

  • Target has insufficient size (21.5px by 17px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23px instead of at least 24px.

Element 4 HHS-ce710e53

Element path: div#gn_search > ul > li > a

Snippet:

<a href="Blast.cgi?PAGE_TYPE=BlastSearch&amp;BLAST_SPEC=MicrobialGenomes">

Label: Microbes

How to fix: Fix any of the following:

  • Target has insufficient size (59.8px by 17px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23px instead of at least 24px.
Document does not have a main landmark. (rule: landmark-one-main) HHS-17180f89

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~804 people potentially excluded (1.0% prevalence × 80,416 affected page loads) People who are deaf and cannot hear audio content. Estimated ~241 people potentially excluded (0.3% prevalence × 80,416 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~1,769 people potentially excluded (2.2% prevalence × 80,416 affected page loads)

Affected elements (1):

Element 1 HHS-0b467750

Element path: html

Snippet:

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://dailymed.nlm.nih.gov

Lighthouse Accessibility Score: 91

Axe findings: 3

Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-da02a1a5

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~1,731 people potentially excluded (2.4% prevalence × 72,105 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~3,101 people potentially excluded (4.3% prevalence × 72,105 affected page loads)

Affected elements (12):

Element 1 HHS-29d193dd

Element path: div.searchNav > ul.searchType > li.human > label

Snippet:

<label for="labeltype-human">

Label: HUMAN DRUGS

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.38 (foreground color: #a1dfff, background color: #2b789f, font size: 9.0pt (12px), font weight: normal). Expected contrast ratio of 4.5:1

Element 2 HHS-438bead5

Element path: div.searchNav > ul.searchType > li.animal > label

Snippet:

<label for="labeltype-animal">

Label: ANIMAL DRUGS

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.38 (foreground color: #a1dfff, background color: #2b789f, font size: 9.0pt (12px), font weight: normal). Expected contrast ratio of 4.5:1

Element 3 HHS-452432ec

Element path: form > div.searchForm > div.searchInput > input#searchQuery

Snippet:

<input id="searchQuery" name="query" tabindex="0" placeholder="Enter drug, NDC code, drug class, or Set ID" autocorrect="off" autocapitalize="off" class="ui-autocomplete-input" autocomplete="off" type="text">

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 2.55 (foreground color: #a2a2a2, background color: #ffffff, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1

Element 4 HHS-424ee6a8

Element path: div.footer-links > ul.primary > li > a

Snippet:

<a href="/dailymed/about-dailymed.cfm">

Label: About DailyMed

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.93 (foreground color: #c7ecff, background color: #2b789f, font size: 9.0pt (12px), font weight: normal). Expected contrast ratio of 4.5:1

Element 5 HHS-424ee6a8

Element path: div.footer-links > ul.primary > li > a

Snippet:

<a href="https://support.nlm.nih.gov/support/create-case/" target="_blank" rel="noopener noreferrer">

Label: Customer Support

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.93 (foreground color: #c7ecff, background color: #2b789f, font size: 9.0pt (12px), font weight: normal). Expected contrast ratio of 4.5:1

Element 6 HHS-424ee6a8

Element path: div.footer-links > ul.primary > li > a

Snippet:

<a href="//www.nlm.nih.gov/copyright.html" target="_blank" rel="bookmark noopener noreferrer">

Label: Copyright

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.93 (foreground color: #c7ecff, background color: #2b789f, font size: 9.0pt (12px), font weight: normal). Expected contrast ratio of 4.5:1

Element 7 HHS-424ee6a8

Element path: div.footer-links > ul.primary > li > a

Snippet:

<a href="//www.nlm.nih.gov/privacy.html" target="_blank" rel="bookmark noopener noreferrer">

Label: Privacy

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.93 (foreground color: #c7ecff, background color: #2b789f, font size: 9.0pt (12px), font weight: normal). Expected contrast ratio of 4.5:1

Element 8 HHS-424ee6a8

Element path: div.footer-links > ul.primary > li > a

Snippet:

<a href="//www.nlm.nih.gov/accessibility.html" target="_blank" rel="bookmark noopener noreferrer">

Label: Web Accessibility

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.93 (foreground color: #c7ecff, background color: #2b789f, font size: 9.0pt (12px), font weight: normal). Expected contrast ratio of 4.5:1

Element 9 HHS-424ee6a8

Element path: div.footer-links > ul.primary > li > a

Snippet:

<a href="https://www.hhs.gov/vulnerability-disclosure-policy/index.html" target="_blank" rel="bookmark noopener noreferrer">

Label: HHS Vulnerability Disclosure

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.93 (foreground color: #c7ecff, background color: #2b789f, font size: 9.0pt (12px), font weight: normal). Expected contrast ratio of 4.5:1

Element 10 HHS-c7020fa6

Element path: div.footer-links > ul.secondary > li > a

Snippet:

<a href="https://www.nih.gov/" target="_blank" rel="bookmark noopener noreferrer">

Label: NIH

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.93 (foreground color: #c7ecff, background color: #2b789f, font size: 9.0pt (12px), font weight: normal). Expected contrast ratio of 4.5:1

Element 11 HHS-c7020fa6

Element path: div.footer-links > ul.secondary > li > a

Snippet:

<a href="//www.nlm.nih.gov/" target="_blank" rel="bookmark noopener noreferrer">

Label: NLM

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.93 (foreground color: #c7ecff, background color: #2b789f, font size: 9.0pt (12px), font weight: normal). Expected contrast ratio of 4.5:1

Element 12 HHS-c7020fa6

Element path: div.footer-links > ul.secondary > li > a

Snippet:

<a href="https://www.hhs.gov/" target="_blank" rel="bookmark noopener noreferrer">

Label: Health & Human Services

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.93 (foreground color: #c7ecff, background color: #2b789f, font size: 9.0pt (12px), font weight: normal). Expected contrast ratio of 4.5:1
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-1e1f4c3a

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~1,586 people potentially excluded (2.2% prevalence × 72,105 affected page loads) People with limited reach, strength, or stamina. Estimated ~4,182 people potentially excluded (5.8% prevalence × 72,105 affected page loads)

Affected elements (1):

Element 1 HHS-ad6cae95

Element path: div.footer-links > div.social > div.addthis_toolbox > a.email-share

Snippet:

<a class="email-share" href="mailto:?subject=DailyMed%20Website%20Information&amp;Body=I%20would%20like%20t…">

How to fix: Fix any of the following:

  • Target has insufficient size (16px by 16px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18px instead of at least 24px.
Document does not have a main landmark. (rule: landmark-one-main) HHS-c41d9709

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~721 people potentially excluded (1.0% prevalence × 72,105 affected page loads) People who are deaf and cannot hear audio content. Estimated ~216 people potentially excluded (0.3% prevalence × 72,105 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~1,586 people potentially excluded (2.2% prevalence × 72,105 affected page loads)

Affected elements (1):

Element 1 HHS-c1237a10

Element path: html.js

Snippet:

<html lang="en" class="js flexbox canvas canvastext webgl no-touch geolocation postmessage no-web…" style="">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://acf.gov

Lighthouse Accessibility Score: 97

Axe findings: 1

Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-94089b69

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~706 people potentially excluded (2.2% prevalence × 32,099 affected page loads) People with limited reach, strength, or stamina. Estimated ~1,862 people potentially excluded (5.8% prevalence × 32,099 affected page loads)

Affected elements (8):

Element 1 HHS-efcd21d8

Element path: div.col-md-6 > div.carousel_slide_text_wrapper > p.paragraph_end_link > a.disclaimer_link

Snippet:

<a href="/disclaimers" class="disclaimer_link">

Label: Visit disclaimer page

How to fix: Fix any of the following:

  • Target has insufficient size (14px by 25.6px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.4px instead of at least 24px.

Element 2 HHS-c0b3ae90

Element path: li > ul > li > a.external

Snippet:

<a href="https://www.hhs.gov" class="external" target="_blank">

Label: HHS.gov

How to fix: Fix any of the following:

  • Target has insufficient size because it is partially obscured (smallest space is 59.4px by 19.2px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.8px instead of at least 24px.

Element 3 HHS-c0b3ae90

Element path: li > ul > li > a.external

Snippet:

<a href="https://www.grants.gov" class="external" target="_blank">

Label: Grants.gov

How to fix: Fix any of the following:

  • Target has insufficient size because it is partially obscured (smallest space is 70.2px by 19.2px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.8px instead of at least 24px.

Element 4 HHS-c0b3ae90

Element path: li > ul > li > a.external

Snippet:

<a href="https://www.usajobs.gov/" class="external" target="_blank">

Label: USAJobs.gov

How to fix: Fix any of the following:

  • Target has insufficient size because it is partially obscured (smallest space is 81.8px by 19.2px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16px instead of at least 24px.

Element 5 HHS-c0b3ae90

Element path: li > ul > li > a.external

Snippet:

<a href="https://oig.hhs.gov/fraud/report-fraud/" class="external" target="_blank">

Label: Report Fraud

How to fix: Fix any of the following:

  • Target has insufficient size because it is partially obscured (smallest space is 81.7px by 19.2px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 19.2px instead of at least 24px.

Element 6 HHS-4e6001ad

Element path: li > ul > li > a

Snippet:

<a href="/accessibility">

Label: Accessibility

How to fix: Fix any of the following:

  • Target has insufficient size because it is partially obscured (smallest space is 61.2px by 19.2px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 13.4px instead of at least 24px.

Element 7 HHS-4e6001ad

Element path: li > ul > li > a

Snippet:

<a href="/about/acf-policies/no-fear-act">

Label: No FEAR Act

How to fix: Fix any of the following:

  • Target has insufficient size because it is partially obscured (smallest space is 60.6px by 19.2px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 8.6px instead of at least 24px.

Element 8 HHS-4e6001ad

Element path: li > ul > li > a

Snippet:

<a href="/foia">

Label: FOIA

How to fix: Fix any of the following:

  • Target has insufficient size (23.5px by 25px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 19.2px instead of at least 24px.

Download full axe findings JSON | Download full axe findings CSV

https://wwwnc.cdc.gov

Lighthouse Accessibility Score: 91

Axe findings: 3

Links do not have a discernible name (rule: link-name) HHS-a1e74b24

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~271 people potentially excluded (1.0% prevalence × 27,072 affected page loads) People who are deaf and cannot hear audio content. Estimated ~81 people potentially excluded (0.3% prevalence × 27,072 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~596 people potentially excluded (2.2% prevalence × 27,072 affected page loads)

Affected elements (1):

Element 1 HHS-39eea2eb

Element path: nav.mobile-navbar > div.mobile-navbar_top > div.d-flex > a#cdc-mobile-search-toggle

Snippet:

<a id="cdc-mobile-search-toggle" class="nav-link" href="#" aria-controls="cdc-mobile-search-form">

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
Skip links are not focusable. (rule: skip-link) HHS-7c38a66b

Including a skip link can help users skip to the main content to save time. Learn more about skip links.

Disabilities affected: People who are blind or have no functional vision. Estimated ~271 people potentially excluded (1.0% prevalence × 27,072 affected page loads) People who are deaf and cannot hear audio content. Estimated ~81 people potentially excluded (0.3% prevalence × 27,072 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~596 people potentially excluded (2.2% prevalence × 27,072 affected page loads)

Affected elements (1):

Element 1 HHS-8e6c4134

Element path: body.cdc-post-type--cdc-homepage > div#skipmenu > a.skippy

Snippet:

<a class="skippy visually-hidden-focusable" href="#headerSearch" tabindex="2">

Label: Skip to search

How to fix: Fix any of the following:

  • No skip link target
Some elements have a `[tabindex]` value greater than 0 (rule: tabindex) HHS-4cec813a

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Disabilities affected: People who are blind or have no functional vision. Estimated ~271 people potentially excluded (1.0% prevalence × 27,072 affected page loads) People who are deaf and cannot hear audio content. Estimated ~81 people potentially excluded (0.3% prevalence × 27,072 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~596 people potentially excluded (2.2% prevalence × 27,072 affected page loads)

Affected elements (3):

Element 1 HHS-48ef9353

Element path: body.cdc-post-type--cdc-homepage > div#skipmenu > a.skippy

Snippet:

<a class="skippy visually-hidden-focusable" href="#content" tabindex="1">

Label: Skip to site content

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 2 HHS-48ef9353

Element path: body.cdc-post-type--cdc-homepage > div#skipmenu > a.skippy

Snippet:

<a class="skippy visually-hidden-focusable" href="#headerSearch" tabindex="2">

Label: Skip to search

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 3 HHS-17085016

Element path: div#hero-carousel > div.carousel-indicators > div.carousel-indicators-wrapper > button#animation-toggle

Snippet:

<button id="animation-toggle" aria-pressed="true" tabindex="3">

Label: Pause carousel

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Download full axe findings JSON | Download full axe findings CSV

https://openi.nlm.nih.gov

Lighthouse Accessibility Score: 55

Axe findings: 7

Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-fc08021e

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~524 people potentially excluded (2.4% prevalence × 21,845 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~939 people potentially excluded (4.3% prevalence × 21,845 affected page loads)

Affected elements (1):

Element 1 HHS-b029f913

Element path: div#content > app-home > div.openi-related-sites > div

Snippet:

<div _ngcontent-ng-c2263394713="">

Label: Related Sites:

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 2.35 (foreground color: #a9a9a9, background color: #ffffff, font size: 10.5pt (14px), font weight: bold). Expected contrast ratio of 4.5:1
Document doesn't have a `<title>` element (rule: document-title) HHS-804d841a

The title gives screen reader users an overview of the page, and search engine users rely on it heavily to determine if a page is relevant to their search. Learn more about document titles.

Disabilities affected: People who are blind or have no functional vision. Estimated ~218 people potentially excluded (1.0% prevalence × 21,845 affected page loads) People who are deaf and cannot hear audio content. Estimated ~66 people potentially excluded (0.3% prevalence × 21,845 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~481 people potentially excluded (2.2% prevalence × 21,845 affected page loads)

Affected elements (1):

Element 1 HHS-a1039c8f

Element path: html

Snippet:

<html lang="en">

How to fix: Fix any of the following:

  • Document does not have a non-empty <title> element
Image elements do not have `[alt]` attributes (rule: image-alt) HHS-bb626cd8

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Disabilities affected: People who are blind or have no functional vision. Estimated ~218 people potentially excluded (1.0% prevalence × 21,845 affected page loads) People who are deaf and cannot hear audio content. Estimated ~66 people potentially excluded (0.3% prevalence × 21,845 affected page loads)

Affected elements (4):

Element 1 HHS-4eaa483a

Element path: div.top-bar > div.logo > div.logo-image > img

Snippet:

<img _ngcontent-ng-c479126218="" src="/assets/images/open-i-r-flat-01.svg">

How to fix: Fix any of the following:

  • Element does not have an alt attribute
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element's default semantics were not overridden with role="none" or role="presentation"

Element 2 HHS-dda7e099

Element path: div.result > div.image > a > img

Snippet:

<img _ngcontent-ng-c2263394713="" src="/imgs/150/119/4007713/PMC4007713_DEV098061F2.png">

How to fix: Fix any of the following:

  • Element does not have an alt attribute
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element's default semantics were not overridden with role="none" or role="presentation"

Element 3 HHS-dda7e099

Element path: div.result > div.image > a > img

Snippet:

<img _ngcontent-ng-c2263394713="" src="/imgs/150/112/2883703/PMC2883703_6605702f1.png">

How to fix: Fix any of the following:

  • Element does not have an alt attribute
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element's default semantics were not overridden with role="none" or role="presentation"

Element 4 HHS-dda7e099

Element path: div.result > div.image > a > img

Snippet:

<img _ngcontent-ng-c2263394713="" src="/imgs/150/317/3660244/PMC3660244_1479-5876-11-110-2.png">

How to fix: Fix any of the following:

  • Element does not have an alt attribute
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element's default semantics were not overridden with role="none" or role="presentation"
Links do not have a discernible name (rule: link-name) HHS-16f544ab

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~218 people potentially excluded (1.0% prevalence × 21,845 affected page loads) People who are deaf and cannot hear audio content. Estimated ~66 people potentially excluded (0.3% prevalence × 21,845 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~481 people potentially excluded (2.2% prevalence × 21,845 affected page loads)

Affected elements (3):

Element 1 HHS-ffd763f8

Element path: div.results > div.result > div.image > a

Snippet:

<a _ngcontent-ng-c2263394713="" href="/gridquery?q=ear&amp;it=xg&amp;m=1&amp;n=100">

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute

Element 2 HHS-ffd763f8

Element path: div.results > div.result > div.image > a

Snippet:

<a _ngcontent-ng-c2263394713="" href="/gridquery?q=MYOGLOBIN&amp;it=xg&amp;m=1&amp;n=100">

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute

Element 3 HHS-ffd763f8

Element path: div.results > div.result > div.image > a

Snippet:

<a _ngcontent-ng-c2263394713="" href="/gridquery?q=tumor&amp;it=xg&amp;m=1&amp;n=100">

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`). (rule: list) HHS-f5894d5c

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Disabilities affected: People who are blind or have no functional vision. Estimated ~218 people potentially excluded (1.0% prevalence × 21,845 affected page loads) People who are deaf and cannot hear audio content. Estimated ~66 people potentially excluded (0.3% prevalence × 21,845 affected page loads)

Affected elements (1):

Element 1 HHS-180936b1

Element path: div.container > div.row > div.col-md-3 > ul.list-inline

Snippet:

<ul _ngcontent-ng-c2943100758="" class="list-inline social_media">

Label: Twitter

How to fix: Fix all of the following:

  • List element has direct children that are not allowed: a
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-87898575

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~481 people potentially excluded (2.2% prevalence × 21,845 affected page loads) People with limited reach, strength, or stamina. Estimated ~1,267 people potentially excluded (5.8% prevalence × 21,845 affected page loads)

Affected elements (6):

Element 1 HHS-a2844a06

Element path: div.row > div.col-md-3 > p > a#anch_70

Snippet:

<a _ngcontent-ng-c2943100758="" href="https://www.nlm.nih.gov/web_policies.html" id="anch_70" class="text-white">

Label: Web Policies

How to fix: Fix any of the following:

  • Target has insufficient size (85.5px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 6px instead of at least 24px.

Element 2 HHS-79e54091

Element path: div.row > div.col-md-3 > p > a#anch_71

Snippet:

<a _ngcontent-ng-c2943100758="" href="https://www.nih.gov/institutes-nih/nih-office-director/office-communicatio…" id="anch_71" class="text-white">

Label: FOIA

How to fix: Fix any of the following:

  • Target has insufficient size (32.2px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 6px instead of at least 24px.

Element 3 HHS-7fee8923

Element path: div.row > div.col-md-3 > p > a#anch_73

Snippet:

<a _ngcontent-ng-c2943100758="" href="https://support.nlm.nih.gov/support/create-case/?from=https://lhncbc.nlm.n…" id="anch_73" class="supportLink text-white">

Label: NLM Support Center

How to fix: Fix any of the following:

  • Target has insufficient size (137.5px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 6px instead of at least 24px.

Element 4 HHS-30652340

Element path: div.row > div.col-md-3 > p > a#anch_74

Snippet:

<a _ngcontent-ng-c2943100758="" href="https://www.nlm.nih.gov/accessibility.html" id="anch_74" class="text-white">

Label: Accessibility

How to fix: Fix any of the following:

  • Target has insufficient size (84.5px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 6px instead of at least 24px.

Element 5 HHS-0d304e3c

Element path: div.row > div.col-md-3 > p > a#anch_75

Snippet:

<a _ngcontent-ng-c2943100758="" href="https://www.nlm.nih.gov/careers/careers.html" id="anch_75" class="text-white">

Label: Careers

How to fix: Fix any of the following:

  • Target has insufficient size (52.2px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 6px instead of at least 24px.

Element 6 HHS-0d304e3c

Element path: div.row > div.col-md-3 > p > a#anch_75

Snippet:

<a _ngcontent-ng-c2943100758="" href="/contactus" id="anch_75" class="text-white">

Label: Contact Us

How to fix: Fix any of the following:

  • Target has insufficient size (73.3px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 6px instead of at least 24px.
Document does not have a main landmark. (rule: landmark-one-main) HHS-dbfabab9

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~218 people potentially excluded (1.0% prevalence × 21,845 affected page loads) People who are deaf and cannot hear audio content. Estimated ~66 people potentially excluded (0.3% prevalence × 21,845 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~481 people potentially excluded (2.2% prevalence × 21,845 affected page loads)

Affected elements (1):

Element 1 HHS-bb5fe1ed

Element path: html

Snippet:

<html lang="en">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://purplebooksearch.fda.gov

Lighthouse Accessibility Score: 96

Axe findings: 1

Links do not have a discernible name (rule: link-name) HHS-58d3496c

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~184 people potentially excluded (1.0% prevalence × 18,416 affected page loads) People who are deaf and cannot hear audio content. Estimated ~55 people potentially excluded (0.3% prevalence × 18,416 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~405 people potentially excluded (2.2% prevalence × 18,416 affected page loads)

Affected elements (1):

Element 1 HHS-5a91f6c5

Element path: header > div.header > div.container > a.header-link

Snippet:

<a href="https://www.fda.gov/" class="header-link">

Label: FDA Logo

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute

Download full axe findings JSON | Download full axe findings CSV

https://support.nlm.nih.gov

Lighthouse Accessibility Score: 88

Axe findings: 4

Buttons do not have an accessible name (rule: button-name) HHS-be8eb6e7

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~143 people potentially excluded (1.0% prevalence × 14,309 affected page loads) People who are deaf and cannot hear audio content. Estimated ~43 people potentially excluded (0.3% prevalence × 14,309 affected page loads)

Affected elements (1):

Element 1 HHS-057a64fb

Element path: div.row > div.search-bar-container > div.search-bar > button#clearSearchButton

Snippet:

<button type="button" class="clear-btn" id="clearSearchButton">

How to fix: Fix any of the following:

  • Element does not have inner text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • Element's default semantics were not overridden with role="none" or role="presentation"
Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-e73b2a75

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~343 people potentially excluded (2.4% prevalence × 14,309 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~615 people potentially excluded (4.3% prevalence × 14,309 affected page loads)

Affected elements (10):

Element 1 HHS-84f7861d

Element path: div.list-group > div.list-group-item > a.title > div.pull-right

Snippet:

<div class="pull-right text-muted small" style="margin-left: 5px;">

Label: Apr 3, 2026

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 10.3pt (13.76px), font weight: normal). Expected contrast ratio of 4.5:1

Element 2 HHS-84f7861d

Element path: div.list-group > div.list-group-item > a.title > div.pull-right

Snippet:

<div class="pull-right text-muted small" style="margin-left: 5px;">

Label: Feb 26, 2026

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 10.3pt (13.76px), font weight: normal). Expected contrast ratio of 4.5:1

Element 3 HHS-84f7861d

Element path: div.list-group > div.list-group-item > a.title > div.pull-right

Snippet:

<div class="pull-right text-muted small" style="margin-left: 5px;">

Label: Feb 25, 2026

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 10.3pt (13.76px), font weight: normal). Expected contrast ratio of 4.5:1

Element 4 HHS-84f7861d

Element path: div.list-group > div.list-group-item > a.title > div.pull-right

Snippet:

<div class="pull-right text-muted small" style="margin-left: 5px;">

Label: Dec 10, 2025

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 10.3pt (13.76px), font weight: normal). Expected contrast ratio of 4.5:1

Element 5 HHS-84f7861d

Element path: div.list-group > div.list-group-item > a.title > div.pull-right

Snippet:

<div class="pull-right text-muted small" style="margin-left: 5px;">

Label: Dec 9, 2025

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 10.3pt (13.76px), font weight: normal). Expected contrast ratio of 4.5:1

Element 6 HHS-84f7861d

Element path: div.list-group > div.list-group-item > a.title > div.pull-right

Snippet:

<div class="pull-right text-muted small" style="margin-left: 5px;">

Label: Feb 26, 2026

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 10.3pt (13.76px), font weight: normal). Expected contrast ratio of 4.5:1

Element 7 HHS-84f7861d

Element path: div.list-group > div.list-group-item > a.title > div.pull-right

Snippet:

<div class="pull-right text-muted small" style="margin-left: 5px;">

Label: Dec 4, 2024

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 10.3pt (13.76px), font weight: normal). Expected contrast ratio of 4.5:1

Element 8 HHS-84f7861d

Element path: div.list-group > div.list-group-item > a.title > div.pull-right

Snippet:

<div class="pull-right text-muted small" style="margin-left: 5px;">

Label: Dec 10, 2025

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 10.3pt (13.76px), font weight: normal). Expected contrast ratio of 4.5:1

Element 9 HHS-84f7861d

Element path: div.list-group > div.list-group-item > a.title > div.pull-right

Snippet:

<div class="pull-right text-muted small" style="margin-left: 5px;">

Label: Nov 12, 2019

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 10.3pt (13.76px), font weight: normal). Expected contrast ratio of 4.5:1

Element 10 HHS-84f7861d

Element path: div.list-group > div.list-group-item > a.title > div.pull-right

Snippet:

<div class="pull-right text-muted small" style="margin-left: 5px;">

Label: Oct 8, 2025

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 10.3pt (13.76px), font weight: normal). Expected contrast ratio of 4.5:1
Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-9aa9af0a

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~143 people potentially excluded (1.0% prevalence × 14,309 affected page loads) People who are deaf and cannot hear audio content. Estimated ~43 people potentially excluded (0.3% prevalence × 14,309 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~315 people potentially excluded (2.2% prevalence × 14,309 affected page loads)

Affected elements (1):

Element 1 HHS-2a18b140

Element path: body > div.container > div.page-heading > h3

Snippet:

<h3>

Label: Browse Help Topics

How to fix: Fix any of the following:

  • Heading order invalid
Document does not have a main landmark. (rule: landmark-one-main) HHS-f88dec43

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~143 people potentially excluded (1.0% prevalence × 14,309 affected page loads) People who are deaf and cannot hear audio content. Estimated ~43 people potentially excluded (0.3% prevalence × 14,309 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~315 people potentially excluded (2.2% prevalence × 14,309 affected page loads)

Affected elements (1):

Element 1 HHS-ad2cbd74

Element path: html

Snippet:

<html lang="en-US" data-lang="en-US" crm-lang="en-US" dir="ltr" crm-lcid="1033" same-site-mode="None">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://search.cdc.gov

Lighthouse Accessibility Score: 91

Axe findings: 3

Links do not have a discernible name (rule: link-name) HHS-2c49319e

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~130 people potentially excluded (1.0% prevalence × 12,953 affected page loads) People who are deaf and cannot hear audio content. Estimated ~39 people potentially excluded (0.3% prevalence × 12,953 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~285 people potentially excluded (2.2% prevalence × 12,953 affected page loads)

Affected elements (1):

Element 1 HHS-6a8b8d14

Element path: nav.mobile-navbar > div.mobile-navbar_top > div.d-flex > a#cdc-mobile-search-toggle

Snippet:

<a id="cdc-mobile-search-toggle" class="nav-link" href="#" aria-controls="cdc-mobile-search-form">

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
Skip links are not focusable. (rule: skip-link) HHS-eb939ffa

Including a skip link can help users skip to the main content to save time. Learn more about skip links.

Disabilities affected: People who are blind or have no functional vision. Estimated ~130 people potentially excluded (1.0% prevalence × 12,953 affected page loads) People who are deaf and cannot hear audio content. Estimated ~39 people potentially excluded (0.3% prevalence × 12,953 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~285 people potentially excluded (2.2% prevalence × 12,953 affected page loads)

Affected elements (1):

Element 1 HHS-7440f570

Element path: body.cdc-post-type--cdc-homepage > div#skipmenu > a.skippy

Snippet:

<a class="skippy visually-hidden-focusable" href="#headerSearch" tabindex="2">

Label: Skip to search

How to fix: Fix any of the following:

  • No skip link target
Some elements have a `[tabindex]` value greater than 0 (rule: tabindex) HHS-7e879e52

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Disabilities affected: People who are blind or have no functional vision. Estimated ~130 people potentially excluded (1.0% prevalence × 12,953 affected page loads) People who are deaf and cannot hear audio content. Estimated ~39 people potentially excluded (0.3% prevalence × 12,953 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~285 people potentially excluded (2.2% prevalence × 12,953 affected page loads)

Affected elements (3):

Element 1 HHS-27a225d3

Element path: body.cdc-post-type--cdc-homepage > div#skipmenu > a.skippy

Snippet:

<a class="skippy visually-hidden-focusable" href="#content" tabindex="1">

Label: Skip to site content

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 2 HHS-27a225d3

Element path: body.cdc-post-type--cdc-homepage > div#skipmenu > a.skippy

Snippet:

<a class="skippy visually-hidden-focusable" href="#headerSearch" tabindex="2">

Label: Skip to search

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 3 HHS-5e3dba9c

Element path: div#hero-carousel > div.carousel-indicators > div.carousel-indicators-wrapper > button#animation-toggle

Snippet:

<button id="animation-toggle" aria-pressed="true" tabindex="3">

Label: Pause carousel

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Download full axe findings JSON | Download full axe findings CSV

https://register.clinicaltrials.gov

Lighthouse Accessibility Score: 76

Axe findings: 3

`<html>` element does not have a `[lang]` attribute (rule: html-has-lang) HHS-f25f070c

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Disabilities affected: People who are blind or have no functional vision. Estimated ~69 people potentially excluded (1.0% prevalence × 6,884 affected page loads) People who are deaf and cannot hear audio content. Estimated ~21 people potentially excluded (0.3% prevalence × 6,884 affected page loads) People with cognitive, learning, or language differences. Estimated ~324 people potentially excluded (4.7% prevalence × 6,884 affected page loads)

Affected elements (1):

Element 1 HHS-0cd1fee1

Element path: html

Snippet:

<html>

How to fix: Fix any of the following:

  • The <html> element does not have a lang attribute
Form elements do not have associated labels (rule: label) HHS-fb4c12ea

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Disabilities affected: People who are blind or have no functional vision. Estimated ~69 people potentially excluded (1.0% prevalence × 6,884 affected page loads) People with low vision who need magnification or high contrast. Estimated ~165 people potentially excluded (2.4% prevalence × 6,884 affected page loads) People who are deaf and cannot hear audio content. Estimated ~21 people potentially excluded (0.3% prevalence × 6,884 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~151 people potentially excluded (2.2% prevalence × 6,884 affected page loads)

Affected elements (3):

Element 1 HHS-e2825698

Element path: tbody > tr > td > input

Snippet:

<input type="TEXT" name="Organization" value="" maxlength="60" size="30">

How to fix: Fix any of the following:

  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element has no placeholder attribute
  • Element's default semantics were not overridden with role="none" or role="presentation"

Element 2 HHS-e2825698

Element path: tbody > tr > td > input

Snippet:

<input type="TEXT" name="UserName" value="" maxlength="40" size="30">

How to fix: Fix any of the following:

  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element has no placeholder attribute
  • Element's default semantics were not overridden with role="none" or role="presentation"

Element 3 HHS-e2825698

Element path: tbody > tr > td > input

Snippet:

<input type="PASSWORD" name="Password" value="" autocomplete="off" maxlength="128" size="30">

How to fix: Fix any of the following:

  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element has no placeholder attribute
  • Element's default semantics were not overridden with role="none" or role="presentation"
Document does not have a main landmark. (rule: landmark-one-main) HHS-a8a37871

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~69 people potentially excluded (1.0% prevalence × 6,884 affected page loads) People who are deaf and cannot hear audio content. Estimated ~21 people potentially excluded (0.3% prevalence × 6,884 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~151 people potentially excluded (2.2% prevalence × 6,884 affected page loads)

Affected elements (1):

Element 1 HHS-8e993352

Element path: html

Snippet:

<html>

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://direct.fda.gov

Lighthouse Accessibility Score: 84

Axe findings: 4

Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-4c09f841

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~158 people potentially excluded (2.4% prevalence × 6,602 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~284 people potentially excluded (4.3% prevalence × 6,602 affected page loads)

Affected elements (1):

Element 1 HHS-fff8fa8b

Element path: tbody > tr > td > input#P101_LOGIN

Snippet:

<input type="button" onclick="SubmitClick();" value="Login" class="btn-red disable-on-submit" style="width: 215px; min-width: 85%; margin-top: 28px; border-radius: 10px;" id="P101_LOGIN" autocomplete="off">

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.04 (foreground color: #ffffff, background color: #da4f49, font size: 9.0pt (12px), font weight: bold). Expected contrast ratio of 4.5:1
Form elements do not have associated labels (rule: label) HHS-8021544f

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Disabilities affected: People who are blind or have no functional vision. Estimated ~66 people potentially excluded (1.0% prevalence × 6,602 affected page loads) People with low vision who need magnification or high contrast. Estimated ~158 people potentially excluded (2.4% prevalence × 6,602 affected page loads) People who are deaf and cannot hear audio content. Estimated ~20 people potentially excluded (0.3% prevalence × 6,602 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~145 people potentially excluded (2.2% prevalence × 6,602 affected page loads)

Affected elements (2):

Element 1 HHS-15ba1d86

Element path: td.disclaimer > div#P101_AGREE > div.apex-item-option > input#P101_AGREE_0

Snippet:

<input type="checkbox" id="P101_AGREE_0" name="P101_AGREE" data-display="" value="Y" autocomplete="off">

How to fix: Fix all of the following:

  • Form element has explicit <label> that is hidden
  • Fix any of the following:
  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element has no placeholder attribute
  • Element's default semantics were not overridden with role="none" or role="presentation"

Element 2 HHS-13b027a6

Element path: tbody > tr > td > input#P_HP_NAME

Snippet:

<input type="text" id="P_HP_NAME" name="P_HP_NAME" class="text_field apex-item-text apex-hp" style="position: absolute !important; left: -99999px !important;" value="" size="30" autocomplete="off">

How to fix: Fix any of the following:

  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element has no placeholder attribute
  • Element's default semantics were not overridden with role="none" or role="presentation"
Some elements have a `[tabindex]` value greater than 0 (rule: tabindex) HHS-2f59774b

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Disabilities affected: People who are blind or have no functional vision. Estimated ~66 people potentially excluded (1.0% prevalence × 6,602 affected page loads) People who are deaf and cannot hear audio content. Estimated ~20 people potentially excluded (0.3% prevalence × 6,602 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~145 people potentially excluded (2.2% prevalence × 6,602 affected page loads)

Affected elements (4):

Element 1 HHS-0229a1eb

Element path: tbody > tr > td > label#P101_USERNAME_LABEL

Snippet:

<label style="font-weight:bold;" class="even_width" for="P101_USERNAME" id="P101_USERNAME_LABEL" tabindex="999">

Label: Username:

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 2 HHS-3c1b64cc

Element path: tbody > tr > td > label#P101_PASSWORD_LABEL

Snippet:

<label style="font-weight:bold;" class="even_width" for="P101_PASSWORD" id="P101_PASSWORD_LABEL" tabindex="999">

Label: Password:

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 3 HHS-91bdeb2a

Element path: tbody > tr > td.disclaimer > label#P101_AGREE_LABEL

Snippet:

<label style="font-weight:bold;" class="even_width" for="P101_AGREE" id="P101_AGREE_LABEL" tabindex="999">

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 4 HHS-cea4f63e

Element path: tbody > tr > td > label#P101_SEPARATOR_LABEL

Snippet:

<label style="font-weight:bold;" class="even_width" for="P101_SEPARATOR" id="P101_SEPARATOR_LABEL" tabindex="999">

Label: OR

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0
Document does not have a main landmark. (rule: landmark-one-main) HHS-14fd32de

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~66 people potentially excluded (1.0% prevalence × 6,602 affected page loads) People who are deaf and cannot hear audio content. Estimated ~20 people potentially excluded (0.3% prevalence × 6,602 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~145 people potentially excluded (2.2% prevalence × 6,602 affected page loads)

Affected elements (1):

Element 1 HHS-14a7bd88

Element path: html

Snippet:

<html lang="en" xmlns="http://www.w3.org/1999/xhtml" xmlns:htmldb="http://htmldb.oracle.com" xmlns:apex="http://apex.oracle.com" data-useragent="Mozilla/5.0 (Linux; Android 11; moto g power (2022)) AppleWebKit/537.36 (K…">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://magazine.medlineplus.gov

Lighthouse Accessibility Score: 87

Axe findings: 4

`<frame>` or `<iframe>` elements do not have a title (rule: frame-title) HHS-aed4931b

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Disabilities affected: People who are blind or have no functional vision. Estimated ~57 people potentially excluded (1.0% prevalence × 5,691 affected page loads) People who are deaf and cannot hear audio content. Estimated ~17 people potentially excluded (0.3% prevalence × 5,691 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~125 people potentially excluded (2.2% prevalence × 5,691 affected page loads)

Affected elements (1):

Element 1 HHS-d3bac73f

Element path: section.usa-grid > div.usa-width-two-thirds > div.video-responsive > iframe

Snippet:

<iframe width="560" height="315" src="https://www.youtube.com/watch?v=QawExnFORVM" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen="0">

How to fix: Fix any of the following:

  • Element has no title attribute
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element's default semantics were not overridden with role="none" or role="presentation"
Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-1da626a8

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~57 people potentially excluded (1.0% prevalence × 5,691 affected page loads) People who are deaf and cannot hear audio content. Estimated ~17 people potentially excluded (0.3% prevalence × 5,691 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~125 people potentially excluded (2.2% prevalence × 5,691 affected page loads)

Affected elements (1):

Element 1 HHS-db816958

Element path: div.usa-width-one-third > article > a > h4

Snippet:

<h4>

Label: The power of music

How to fix: Fix any of the following:

  • Heading order invalid
Links do not have a discernible name (rule: link-name) HHS-3ade9b96

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~57 people potentially excluded (1.0% prevalence × 5,691 affected page loads) People who are deaf and cannot hear audio content. Estimated ~17 people potentially excluded (0.3% prevalence × 5,691 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~125 people potentially excluded (2.2% prevalence × 5,691 affected page loads)

Affected elements (1):

Element 1 HHS-5ddf9415

Element path: div.usa-grid > button#herodeck > p > a

Snippet:

<a href="/article/after-pancreatic-cancer-maria-menounos-makes-health-her-focus">

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
Some elements have a `[tabindex]` value greater than 0 (rule: tabindex) HHS-2b55cb65

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Disabilities affected: People who are blind or have no functional vision. Estimated ~57 people potentially excluded (1.0% prevalence × 5,691 affected page loads) People who are deaf and cannot hear audio content. Estimated ~17 people potentially excluded (0.3% prevalence × 5,691 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~125 people potentially excluded (2.2% prevalence × 5,691 affected page loads)

Affected elements (1):

Element 1 HHS-db3125f1

Element path: main > section.hero > div.usa-grid > button#herodeck

Snippet:

<button class="usa-hero-callout usa-section-dark hero-text hero-button" role="button" aria-pressed="false" tabindex="1" id="herodeck" data-url="/article/after-pancreatic-cancer-maria-menounos-makes-health-her-focus">

Label: Cancer After pancreatic cancer, Maria Menounos makes health her focus

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Download full axe findings JSON | Download full axe findings CSV

https://www.ncbi.nlm.nih.gov

Lighthouse Accessibility Score: 91

Axe findings: 3

Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-e84ca011

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~132 people potentially excluded (2.4% prevalence × 5,487 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~236 people potentially excluded (4.3% prevalence × 5,487 affected page loads)

Affected elements (6):

Element 1 HHS-4962918e

Element path: ul.rss_items > li#ui-ncbiexpander-2 > div.expanderWrapper > p.date

Snippet:

<p class="date">

Label: 26 Mar 2026

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.54 (foreground color: #888888, background color: #ffffff, font size: 7.8pt (10.4px), font weight: normal). Expected contrast ratio of 4.5:1

Element 2 HHS-1738fd9b

Element path: ul.rss_items > li#ui-ncbiexpander-2 > div.expanderWrapper > p.desc

Snippet:

<p class="desc">

Label: NCBI, part of the National Library of Medicine (NLM), is excited to announce ou…

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1

Element 3 HHS-f30a0707

Element path: ul.rss_items > li#ui-ncbiexpander-3 > div.expanderWrapper > p.date

Snippet:

<p class="date">

Label: 25 Mar 2026

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.54 (foreground color: #888888, background color: #ffffff, font size: 7.8pt (10.4px), font weight: normal). Expected contrast ratio of 4.5:1

Element 4 HHS-1bc7c4cf

Element path: ul.rss_items > li#ui-ncbiexpander-3 > div.expanderWrapper > p.desc

Snippet:

<p class="desc">

Label: To ensure the security and long-term stability of our data delivery infrastruct…

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1

Element 5 HHS-07c016e4

Element path: ul.rss_items > li#ui-ncbiexpander-4 > div.expanderWrapper > p.date

Snippet:

<p class="date">

Label: 24 Mar 2026

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.54 (foreground color: #888888, background color: #ffffff, font size: 7.8pt (10.4px), font weight: normal). Expected contrast ratio of 4.5:1

Element 6 HHS-d003687c

Element path: ul.rss_items > li#ui-ncbiexpander-4 > div.expanderWrapper > p.desc

Snippet:

<p class="desc">

Label: RefSeq release 234 is now available online and from the FTP site! You can acces…

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-ece283bc

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~121 people potentially excluded (2.2% prevalence × 5,487 affected page loads) People with limited reach, strength, or stamina. Estimated ~318 people potentially excluded (5.8% prevalence × 5,487 affected page loads)

Affected elements (2):

Element 1 HHS-654589c3

Element path: div.row > div.col-lg-3 > p > a.text-white

Snippet:

<a href="https://www.nlm.nih.gov/accessibility.html" class="text-white">

Label: Accessibility

How to fix: Fix any of the following:

  • Target has insufficient size (77.3px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23.8px instead of at least 24px.

Element 2 HHS-654589c3

Element path: div.row > div.col-lg-3 > p > a.text-white

Snippet:

<a href="https://www.nlm.nih.gov/careers/careers.html" class="text-white">

Label: Careers

How to fix: Fix any of the following:

  • Target has insufficient size (49.8px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23.8px instead of at least 24px.
Document does not have a main landmark. (rule: landmark-one-main) HHS-4a68892b

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~55 people potentially excluded (1.0% prevalence × 5,487 affected page loads) People who are deaf and cannot hear audio content. Estimated ~16 people potentially excluded (0.3% prevalence × 5,487 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~121 people potentially excluded (2.2% prevalence × 5,487 affected page loads)

Affected elements (1):

Element 1 HHS-44105694

Element path: html

Snippet:

<html lang="en">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://meshb.nlm.nih.gov

Lighthouse Accessibility Score: 88

Axe findings: 3

`[aria-*]` attributes do not match their roles (rule: aria-allowed-attr) HHS-717c2546

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Disabilities affected: People who are blind or have no functional vision. Estimated ~46 people potentially excluded (1.0% prevalence × 4,576 affected page loads) People who are deaf and cannot hear audio content. Estimated ~14 people potentially excluded (0.3% prevalence × 4,576 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~101 people potentially excluded (2.2% prevalence × 4,576 affected page loads)

Affected elements (1):

Element 1 HHS-e5851c36

Element path: div > nav.navbar > div.container-fluid > div#bs-example-navbar-collapse-1

Snippet:

<div id="bs-example-navbar-collapse-1" class="collapse navbar-collapse" aria-expanded="false">

Label: Search Tree View MeSH on Demand MeSH 2025 About Suggestions Contact Us

How to fix: Fix all of the following:

  • ARIA attribute is not allowed: aria-expanded="false"
Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-2aa68582

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~110 people potentially excluded (2.4% prevalence × 4,576 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~197 people potentially excluded (4.3% prevalence × 4,576 affected page loads)

Affected elements (7):

Element 1 HHS-3938db92

Element path: div#bs-example-navbar-collapse-1 > ul.nav > li > a#mainSearchButton

Snippet:

<a href="/" id="mainSearchButton">

Label: Search

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.21 (foreground color: #777777, background color: #f8f8f8, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1

Element 2 HHS-0c024ebf

Element path: div#bs-example-navbar-collapse-1 > ul.nav > li > a

Snippet:

<a href="/treeView">

Label: Tree View

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.21 (foreground color: #777777, background color: #f8f8f8, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1

Element 3 HHS-0c024ebf

Element path: div#bs-example-navbar-collapse-1 > ul.nav > li > a

Snippet:

<a href="/MeSHonDemand">

Label: MeSH on Demand

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.21 (foreground color: #777777, background color: #f8f8f8, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1

Element 4 HHS-0c024ebf

Element path: div#bs-example-navbar-collapse-1 > ul.nav > li > a

Snippet:

<a href="https://meshb-prev.nlm.nih.gov/" target="_blank">

Label: MeSH 2025

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.21 (foreground color: #777777, background color: #f8f8f8, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1

Element 5 HHS-0c024ebf

Element path: div#bs-example-navbar-collapse-1 > ul.nav > li > a

Snippet:

<a href="https://www.nlm.nih.gov/mesh/mbinfo.html" target="_blank">

Label: About

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.21 (foreground color: #777777, background color: #f8f8f8, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1

Element 6 HHS-0c024ebf

Element path: div#bs-example-navbar-collapse-1 > ul.nav > li > a

Snippet:

<a href="https://www.nlm.nih.gov/mesh/meshsugg.html" target="_blank">

Label: Suggestions

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.21 (foreground color: #777777, background color: #f8f8f8, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1

Element 7 HHS-0c024ebf

Element path: div#bs-example-navbar-collapse-1 > ul.nav > li > a

Snippet:

<a href="https://support.nlm.nih.gov/support/create-case/" target="_blank">

Label: Contact Us

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.21 (foreground color: #777777, background color: #f8f8f8, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1
Document does not have a main landmark. (rule: landmark-one-main) HHS-a3a5eff6

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~46 people potentially excluded (1.0% prevalence × 4,576 affected page loads) People who are deaf and cannot hear audio content. Estimated ~14 people potentially excluded (0.3% prevalence × 4,576 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~101 people potentially excluded (2.2% prevalence × 4,576 affected page loads)

Affected elements (1):

Element 1 HHS-75eefffa

Element path: html

Snippet:

<html lang="en">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://id.nlm.nih.gov

Lighthouse Accessibility Score: 76

Axe findings: 6

Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-5efd01ec

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~105 people potentially excluded (2.4% prevalence × 4,393 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~189 people potentially excluded (4.3% prevalence × 4,393 affected page loads)

Affected elements (4):

Element 1 HHS-36a8c88e

Element path: ul#meshTab > li.dropdown > a.dropdown-toggle > strong

Snippet:

<strong>

Label: Products and Services

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.34 (foreground color: #ffffff, background color: #5e7ba3, font size: 10.5pt (14px), font weight: bold). Expected contrast ratio of 4.5:1

Element 2 HHS-36a8c88e

Element path: ul#meshTab > li.dropdown > a.dropdown-toggle > strong

Snippet:

<strong>

Label: Resources for You

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.34 (foreground color: #ffffff, background color: #5e7ba3, font size: 10.5pt (14px), font weight: bold). Expected contrast ratio of 4.5:1

Element 3 HHS-36a8c88e

Element path: ul#meshTab > li.dropdown > a.dropdown-toggle > strong

Snippet:

<strong>

Label: Explore NLM

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.34 (foreground color: #ffffff, background color: #5e7ba3, font size: 10.5pt (14px), font weight: bold). Expected contrast ratio of 4.5:1

Element 4 HHS-36a8c88e

Element path: ul#meshTab > li.dropdown > a.dropdown-toggle > strong

Snippet:

<strong>

Label: Grants and Funding

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.34 (foreground color: #ffffff, background color: #5e7ba3, font size: 10.5pt (14px), font weight: bold). Expected contrast ratio of 4.5:1
Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-062f9725

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~44 people potentially excluded (1.0% prevalence × 4,393 affected page loads) People who are deaf and cannot hear audio content. Estimated ~13 people potentially excluded (0.3% prevalence × 4,393 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~97 people potentially excluded (2.2% prevalence × 4,393 affected page loads)

Affected elements (1):

Element 1 HHS-b3155400

Element path: div#home > div.row > div.col-md-6 > h3.meshrdf-resources-header

Snippet:

<h3 class="meshrdf-resources-header">

Label: MeSH RDF Resources

How to fix: Fix any of the following:

  • Heading order invalid
Links rely on color to be distinguishable. (rule: link-in-text-block) HHS-04e4a51c

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~105 people potentially excluded (2.4% prevalence × 4,393 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~189 people potentially excluded (4.3% prevalence × 4,393 affected page loads)

Affected elements (14):

Element 1 HHS-afd21310

Element path: div.row > div#main > p > a

Snippet:

<a href="https://www.nlm.nih.gov/mesh/">

Label: MeSH

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.77:1 with the surrounding text. (Minimum contrast is 3:1, link text: #337ab7, surrounding text: #333333)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 2 HHS-afd21310

Element path: div.row > div#main > p > a

Snippet:

<a href="https://nlmpubs.nlm.nih.gov/projects/mesh/rdf/mesh.nt.gz">

Label: RDF N-Triples format

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.77:1 with the surrounding text. (Minimum contrast is 3:1, link text: #337ab7, surrounding text: #333333)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 3 HHS-afd21310

Element path: div.row > div#main > p > a

Snippet:

<a href="/mesh/query">

Label: SPARQL query editor

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.77:1 with the surrounding text. (Minimum contrast is 3:1, link text: #337ab7, surrounding text: #333333)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 4 HHS-afd21310

Element path: div.row > div#main > p > a

Snippet:

<a href="http://hhs.github.io/meshrdf/sparql-and-uri-requests">

Label: SPARQL endpoint (API)

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.77:1 with the surrounding text. (Minimum contrast is 3:1, link text: #337ab7, surrounding text: #333333)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 5 HHS-84d30756

Element path: div#main > ul > li > a

Snippet:

<a href="https://id.nlm.nih.gov/mesh/D015242.json">

Label: https://id.nlm.nih.gov/mesh/D015242.json

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.77:1 with the surrounding text. (Minimum contrast is 3:1, link text: #337ab7, surrounding text: #333333)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 6 HHS-84d30756

Element path: div#main > ul > li > a

Snippet:

<a href="/mesh/query?query=PREFIX+rdf%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F1999%2F02%2F2…">

Label: Get all descriptor labels and identifiers

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.77:1 with the surrounding text. (Minimum contrast is 3:1, link text: #337ab7, surrounding text: #333333)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 7 HHS-84d30756

Element path: div#main > ul > li > a

Snippet:

<a href="/mesh/lookup?form=descriptor&amp;label=Infection%20Control">

Label: Find all the allowable qualifiers for Infection Control

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.77:1 with the surrounding text. (Minimum contrast is 3:1, link text: #337ab7, surrounding text: #333333)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 8 HHS-84d30756

Element path: div#main > ul > li > a

Snippet:

<a href="/mesh/query?query=PREFIX+rdf%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F1999%2F02%2F2…">

Label: Get definitions for Bicuspid

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.77:1 with the surrounding text. (Minimum contrast is 3:1, link text: #337ab7, surrounding text: #333333)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 9 HHS-84d30756

Element path: div#main > ul > li > a

Snippet:

<a href="/mesh/query?query=PREFIX+rdf%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F1999%2F02%2F2…">

Label: Get all MeSH Descriptors that fall under Neoplasms

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.77:1 with the surrounding text. (Minimum contrast is 3:1, link text: #337ab7, surrounding text: #333333)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 10 HHS-afd21310

Element path: div.row > div#main > p > a

Snippet:

<a href="https://github.com/HHS/meshrdf/issues">

Label: GitHub

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.77:1 with the surrounding text. (Minimum contrast is 3:1, link text: #337ab7, surrounding text: #333333)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 11 HHS-5865f2f7

Element path: div.row > div.col-md-6 > p > a

Snippet:

<a href="https://hhs.github.io/meshrdf/sample-queries">

Label: sample queries

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.77:1 with the surrounding text. (Minimum contrast is 3:1, link text: #337ab7, surrounding text: #333333)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 12 HHS-5865f2f7

Element path: div.row > div.col-md-6 > p > a

Snippet:

<a href="https://hhs.github.io/meshrdf/sample-queries">

Label: sample queries

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.77:1 with the surrounding text. (Minimum contrast is 3:1, link text: #337ab7, surrounding text: #333333)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 13 HHS-5865f2f7

Element path: div.row > div.col-md-6 > p > a

Snippet:

<a href="https://github.com/HHS/meshrdf/issues">

Label: GitHub

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.77:1 with the surrounding text. (Minimum contrast is 3:1, link text: #337ab7, surrounding text: #333333)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 14 HHS-5865f2f7

Element path: div.row > div.col-md-6 > p > a

Snippet:

<a href="https://support.nlm.nih.gov/?category=MeSH&amp;from=https://id.nlm.nih.gov/mes…">

Label: NLM Customer Support

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.77:1 with the surrounding text. (Minimum contrast is 3:1, link text: #337ab7, surrounding text: #333333)
  • The link has no styling (such as underline) to distinguish it from the surrounding text
Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`). (rule: list) HHS-c6b07fb6

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Disabilities affected: People who are blind or have no functional vision. Estimated ~44 people potentially excluded (1.0% prevalence × 4,393 affected page loads) People who are deaf and cannot hear audio content. Estimated ~13 people potentially excluded (0.3% prevalence × 4,393 affected page loads)

Affected elements (1):

Element 1 HHS-30695a73

Element path: div.menu-and-title > div.row > div.col-md-12 > ul.nav

Snippet:

<ul class="nav nav-pills pull-left">

Label: Home SPARQL Query Editor Lookup Documentation Sample Queries Download API MeSH …

How to fix: Fix all of the following:

  • List element has direct children that are not allowed: [role=presentation]
List items (`<li>`) are not contained within `<ul>`, `<ol>` or `<menu>` parent elements. (rule: listitem) HHS-47b8a646

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Disabilities affected: People who are blind or have no functional vision. Estimated ~44 people potentially excluded (1.0% prevalence × 4,393 affected page loads) People who are deaf and cannot hear audio content. Estimated ~13 people potentially excluded (0.3% prevalence × 4,393 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~97 people potentially excluded (2.2% prevalence × 4,393 affected page loads)

Affected elements (4):

Element 1 HHS-47ac61e7

Element path: div.container-fluid > div > ul#meshTab > li.dropdown

Snippet:

<li class="dropdown">

Label: Products and Services

How to fix: Fix any of the following:

  • List item parent element has a role that is not role="list"

Element 2 HHS-47ac61e7

Element path: div.container-fluid > div > ul#meshTab > li.dropdown

Snippet:

<li class="dropdown">

Label: Resources for You

How to fix: Fix any of the following:

  • List item parent element has a role that is not role="list"

Element 3 HHS-47ac61e7

Element path: div.container-fluid > div > ul#meshTab > li.dropdown

Snippet:

<li class="dropdown">

Label: Explore NLM

How to fix: Fix any of the following:

  • List item parent element has a role that is not role="list"

Element 4 HHS-47ac61e7

Element path: div.container-fluid > div > ul#meshTab > li.dropdown

Snippet:

<li class="dropdown">

Label: Grants and Funding

How to fix: Fix any of the following:

  • List item parent element has a role that is not role="list"
Document does not have a main landmark. (rule: landmark-one-main) HHS-f54884d0

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~44 people potentially excluded (1.0% prevalence × 4,393 affected page loads) People who are deaf and cannot hear audio content. Estimated ~13 people potentially excluded (0.3% prevalence × 4,393 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~97 people potentially excluded (2.2% prevalence × 4,393 affected page loads)

Affected elements (1):

Element 1 HHS-a307839c

Element path: html

Snippet:

<html lang="en">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://wonder.cdc.gov

Lighthouse Accessibility Score: 88

Axe findings: 3

Buttons do not have an accessible name (rule: button-name) HHS-2a5d99ee

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~44 people potentially excluded (1.0% prevalence × 4,379 affected page loads) People who are deaf and cannot hear audio content. Estimated ~13 people potentially excluded (0.3% prevalence × 4,379 affected page loads)

Affected elements (1):

Element 1 HHS-faacb845

Element path: div.col > div.wonder > div.wonder-notif > button.wonder-btn-close

Snippet:

<button class="wonder-btn-close" onclick="hideElements('.wonder-notif')">

How to fix: Fix any of the following:

  • Element does not have inner text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • Element's default semantics were not overridden with role="none" or role="presentation"
Form elements do not have associated labels (rule: label) HHS-68222e9d

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Disabilities affected: People who are blind or have no functional vision. Estimated ~44 people potentially excluded (1.0% prevalence × 4,379 affected page loads) People with low vision who need magnification or high contrast. Estimated ~105 people potentially excluded (2.4% prevalence × 4,379 affected page loads) People who are deaf and cannot hear audio content. Estimated ~13 people potentially excluded (0.3% prevalence × 4,379 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~96 people potentially excluded (2.2% prevalence × 4,379 affected page loads)

Affected elements (1):

Element 1 HHS-fbbae705

Element path: nav > div.nav-section-home > form#wel-form > input#wel-search-field

Snippet:

<input id="wel-search-field" type="text" name="S__search1" maxlength="100" value="">

How to fix: Fix any of the following:

  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element has no placeholder attribute
  • Element's default semantics were not overridden with role="none" or role="presentation"
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-41171ca9

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~96 people potentially excluded (2.2% prevalence × 4,379 affected page loads) People with limited reach, strength, or stamina. Estimated ~254 people potentially excluded (5.8% prevalence × 4,379 affected page loads)

Affected elements (6):

Element 1 HHS-58a7f519

Element path: li > ul > li > a

Snippet:

<a href="/fetal.html">

Label: Fetal Deaths

How to fix: Fix any of the following:

  • Target has insufficient size (65.3px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18.4px instead of at least 24px.

Element 2 HHS-58a7f519

Element path: li > ul > li > a

Snippet:

<a href="/lbd.html">

Label: Infant Deaths

How to fix: Fix any of the following:

  • Target has insufficient size (70.4px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18.4px instead of at least 24px.

Element 3 HHS-58a7f519

Element path: li > ul > li > a

Snippet:

<a href="/nasa-insolar.html">

Label: Daily Sunlight

How to fix: Fix any of the following:

  • Target has insufficient size (76.2px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23.6px instead of at least 24px.

Element 4 HHS-58a7f519

Element path: li > ul > li > a

Snippet:

<a href="/nasa-precipitation.html">

Label: Daily Precipitation

How to fix: Fix any of the following:

  • Target has insufficient size (98.6px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23.6px instead of at least 24px.

Element 5 HHS-a0e76c3c

Element path: div.wel-column > ul > li > a

Snippet:

<a href="/wonder/outside/nndss-tables.html">

Label: NNDSS Annual Tables

How to fix: Fix any of the following:

  • Target has insufficient size (120.2px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18px instead of at least 24px.

Element 6 HHS-a0e76c3c

Element path: div.wel-column > ul > li > a

Snippet:

<a href="/wonder/outside/nndss-tables.html">

Label: NNDSS Weekly Tables

How to fix: Fix any of the following:

  • Target has insufficient size (121.8px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18px instead of at least 24px.

Download full axe findings JSON | Download full axe findings CSV

https://datadashboard.fda.gov

Lighthouse Accessibility Score: 81

Axe findings: 3

Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-08dfb35c

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~38 people potentially excluded (1.0% prevalence × 3,779 affected page loads) People who are deaf and cannot hear audio content. Estimated ~11 people potentially excluded (0.3% prevalence × 3,779 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~83 people potentially excluded (2.2% prevalence × 3,779 affected page loads)

Affected elements (1):

Element 1 HHS-4f0dcbe0

Element path: div#fdaFooter > div.row > div.col-xs-12 > h6.icon-email

Snippet:

<h6 class="icon-email">

Label: Contact

How to fix: Fix any of the following:

  • Heading order invalid
`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5. (rule: meta-viewport) HHS-d8012402

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~91 people potentially excluded (2.4% prevalence × 3,779 affected page loads)

Affected elements (1):

Element 1 HHS-f7deea39

Element path: head > meta

Snippet:

<meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,minimum-scale=1,user-sc…">

How to fix: Fix any of the following:

  • user-scalable=no on <meta> tag disables zooming on mobile devices
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-9bd59b3f

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~83 people potentially excluded (2.2% prevalence × 3,779 affected page loads) People with limited reach, strength, or stamina. Estimated ~219 people potentially excluded (5.8% prevalence × 3,779 affected page loads)

Affected elements (5):

Element 1 HHS-fa1bd2aa

Element path: div.col-sm-12 > div.col-xs-5 > div.col-xs-12 > a#fb1

Snippet:

<a id="fb1" href="https://www.fda.gov/about-fda/about-website/internet-accessibility" target="_blank">

Label: Accessibility (Opens in new window)

How to fix: Fix any of the following:

  • Target has insufficient size (83.6px by 20px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17.2px instead of at least 24px.

Element 2 HHS-be7b8177

Element path: div.col-sm-12 > div.col-xs-5 > div.col-xs-12 > a#fb3

Snippet:

<a id="fb3" href="https://www.fda.gov/about-fda" target="_blank">

Label: About FDA (Opens in new window)

How to fix: Fix any of the following:

  • Target has insufficient size (75px by 20px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17.2px instead of at least 24px.

Element 3 HHS-4947ad64

Element path: div.col-sm-12 > div.col-xs-5 > div.col-xs-12 > a#fb4

Snippet:

<a id="fb4" href="https://www.fda.gov/regulatory-information/freedom-information" target="_blank">

Label: FOIA (Opens in new window)

How to fix: Fix any of the following:

  • Target has insufficient size (33.8px by 20px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17.2px instead of at least 24px.

Element 4 HHS-47dd39ce

Element path: div.col-sm-12 > div.col-xs-7 > div.col-xs-12 > a#fb5

Snippet:

<a id="fb5" href="https://www.fda.gov/about-fda/jobs-and-training-fda/no-fear-act" target="_blank">

Label: No FEAR Act (Opens in new window)

How to fix: Fix any of the following:

  • Target has insufficient size (87.4px by 20px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17.2px instead of at least 24px.

Element 5 HHS-ef7a0e20

Element path: div.col-sm-12 > div.col-xs-7 > div.col-xs-12 > a#fb7

Snippet:

<a id="fb7" href="https://www.fda.gov/about-fda/about-website/website-policies" target="_blank">

Label: Website Policies (Opens in new window)

How to fix: Fix any of the following:

  • Target has insufficient size (110.4px by 20px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17.2px instead of at least 24px.

Download full axe findings JSON | Download full axe findings CSV

https://atsdr.cdc.gov

Lighthouse Accessibility Score: 95

Axe findings: 2

Elements with an ARIA `[role]` that require children to contain a specific `[role]` are missing some or all of those required children. (rule: aria-required-children) HHS-7bbd9787

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Disabilities affected: People who are blind or have no functional vision. Estimated ~37 people potentially excluded (1.0% prevalence × 3,683 affected page loads) People who are deaf and cannot hear audio content. Estimated ~11 people potentially excluded (0.3% prevalence × 3,683 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~81 people potentially excluded (2.2% prevalence × 3,683 affected page loads)

Affected elements (1):

Element 1 HHS-eee4cdc1

Element path: header.container-fluid > div.container > div.cdc-header-mobile > div.dropdown-menu

Snippet:

<div class="dropdown-menu cdc-mobile-menu" role="menu" aria-labelledby="mobileDropDownButton">

Label: For Everyone About ATSDR A-Z Index Annual Reports ATSDR's Impact on Public Heal…

How to fix: Fix any of the following:

  • Element has children which are not allowed: a[tabindex], button[tabindex], ul[tabindex]
Elements with visible text labels do not have matching accessible names. (rule: label-content-name-mismatch) HHS-4ef6f1c3

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Disabilities affected: People who are blind or have no functional vision. Estimated ~37 people potentially excluded (1.0% prevalence × 3,683 affected page loads) People with low vision who need magnification or high contrast. Estimated ~88 people potentially excluded (2.4% prevalence × 3,683 affected page loads) People who are deaf and cannot hear audio content. Estimated ~11 people potentially excluded (0.3% prevalence × 3,683 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~81 people potentially excluded (2.2% prevalence × 3,683 affected page loads)

Affected elements (1):

Element 1 HHS-353ff3e9

Element path: div.row > div.col-lg-3 > h2 > a.cdc-footer__super-title

Snippet:

<a href="/index.html" class="cdc-footer__super-title" aria-label="Agency for Toxic Substances and Disease Registry">

Label: ATSDR 

How to fix: Fix any of the following:

  • Text inside the element is not included in the accessible name

Download full axe findings JSON | Download full axe findings CSV

https://docline.gov

Lighthouse Accessibility Score: 96

Axe findings: 1

Links rely on color to be distinguishable. (rule: link-in-text-block) HHS-5f7f9feb

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~80 people potentially excluded (2.4% prevalence × 3,320 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~143 people potentially excluded (4.3% prevalence × 3,320 affected page loads)

Affected elements (2):

Element 1 HHS-0391afcb

Element path: div.card-body > div > p > a

Snippet:

<a href="https://www.nlm.nih.gov/" target="_blank" rel="noopener noreferrer">

Label: National Library of Medicine's

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.43:1 with the surrounding text. (Minimum contrast is 3:1, link text: #0063a4, surrounding text: #212529)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 2 HHS-0391afcb

Element path: div.card-body > div > p > a

Snippet:

<a href="https://nnlm.gov" target="_blank" rel="noopener noreferrer">

Label: Network of the National Library of Medicine (NNLM)

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.43:1 with the surrounding text. (Minimum contrast is 3:1, link text: #0063a4, surrounding text: #212529)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Download full axe findings JSON | Download full axe findings CSV

https://tools.cdc.gov

Lighthouse Accessibility Score: 95

Axe findings: 2

Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-660e4859

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~30 people potentially excluded (1.0% prevalence × 3,042 affected page loads) People who are deaf and cannot hear audio content. Estimated ~9 people potentially excluded (0.3% prevalence × 3,042 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~67 people potentially excluded (2.2% prevalence × 3,042 affected page loads)

Affected elements (1):

Element 1 HHS-ef6fd764

Element path: nav#share-nav > div > div.module-typeH > h4

Snippet:

<h4>

Label: Top Syndicated Media

How to fix: Fix any of the following:

  • Heading order invalid
Links rely on color to be distinguishable. (rule: link-in-text-block) HHS-d0b9ebe6

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~73 people potentially excluded (2.4% prevalence × 3,042 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~131 people potentially excluded (4.3% prevalence × 3,042 affected page loads)

Affected elements (1):

Element 1 HHS-26b55975

Element path: div.card > div.card-body > p > a

Snippet:

<a href="https://www.cdc.gov/cdc-info/forms/contact-us.html">

Label: Send us a message

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.61:1 with the surrounding text. (Minimum contrast is 3:1, link text: #075290, surrounding text: #000000)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Download full axe findings JSON | Download full axe findings CSV

https://trace.ncbi.nlm.nih.gov

Lighthouse Accessibility Score: 94

Axe findings: 2

Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-966136e7

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~72 people potentially excluded (2.4% prevalence × 3,011 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~129 people potentially excluded (4.3% prevalence × 3,011 affected page loads)

Affected elements (1):

Element 1 HHS-411b38d5

Element path: body > div > a#vdp

Snippet:

<a id="vdp" href="https://www.hhs.gov/vulnerability-disclosure-policy/index.html">

Label: HHS Vulnerability Disclosure

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.98 (foreground color: #4183c4, background color: #ffffff, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1
Document does not have a main landmark. (rule: landmark-one-main) HHS-1f3a9482

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~30 people potentially excluded (1.0% prevalence × 3,011 affected page loads) People who are deaf and cannot hear audio content. Estimated ~9 people potentially excluded (0.3% prevalence × 3,011 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~66 people potentially excluded (2.2% prevalence × 3,011 affected page loads)

Affected elements (1):

Element 1 HHS-976ca092

Element path: html

Snippet:

<html lang="en">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://collections.nlm.nih.gov

Lighthouse Accessibility Score: 91

Axe findings: 3

ARIA input fields do not have accessible names (rule: aria-input-field-name) HHS-d52a16c2

When an input field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn more about input field labels.

Disabilities affected: People who are blind or have no functional vision. Estimated ~26 people potentially excluded (1.0% prevalence × 2,602 affected page loads) People who are deaf and cannot hear audio content. Estimated ~8 people potentially excluded (0.3% prevalence × 2,602 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~57 people potentially excluded (2.2% prevalence × 2,602 affected page loads)

Affected elements (2):

Element 1 HHS-8f574369

Element path: section.col-md-12 > div.container > div#collectionsSliderMobile > div.carousel-inner

Snippet:

<div class="carousel-inner" role="listbox">

Label: Archives & Personal Papers Collections Digitized personal papers and organizati…

How to fix: Fix any of the following:

  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute

Element 2 HHS-d1924ab2

Element path: section.col-md-12 > div.container > div#recentDigiMobile > div.carousel-inner

Snippet:

<div class="carousel-inner" role="listbox">

Label: The classic Greek dictionary, in two parts: Greek-English and English-Greek, wi…

How to fix: Fix any of the following:

  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
Elements with an ARIA `[role]` that require children to contain a specific `[role]` are missing some or all of those required children. (rule: aria-required-children) HHS-cc5ce3a9

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Disabilities affected: People who are blind or have no functional vision. Estimated ~26 people potentially excluded (1.0% prevalence × 2,602 affected page loads) People who are deaf and cannot hear audio content. Estimated ~8 people potentially excluded (0.3% prevalence × 2,602 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~57 people potentially excluded (2.2% prevalence × 2,602 affected page loads)

Affected elements (2):

Element 1 HHS-895f3197

Element path: section.col-md-12 > div.container > div#collectionsSliderMobile > div.carousel-inner

Snippet:

<div class="carousel-inner" role="listbox">

Label: Archives & Personal Papers Collections Digitized personal papers and organizati…

How to fix: Fix any of the following:

  • Element has children which are not allowed: a[tabindex]

Element 2 HHS-3f6f015c

Element path: section.col-md-12 > div.container > div#recentDigiMobile > div.carousel-inner

Snippet:

<div class="carousel-inner" role="listbox">

Label: The classic Greek dictionary, in two parts: Greek-English and English-Greek, wi…

How to fix: Fix any of the following:

  • Element has children which are not allowed: a[tabindex]
Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-ae8cb9d9

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~26 people potentially excluded (1.0% prevalence × 2,602 affected page loads) People who are deaf and cannot hear audio content. Estimated ~8 people potentially excluded (0.3% prevalence × 2,602 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~57 people potentially excluded (2.2% prevalence × 2,602 affected page loads)

Affected elements (3):

Element 1 HHS-7eec7dc7

Element path: div.row > section.col-md-12 > div.container > h4.fw-bold

Snippet:

<h4 class="fw-bold">

Label: Collections View all

How to fix: Fix any of the following:

  • Heading order invalid

Element 2 HHS-b6e080c4

Element path: div.card > div.card-body > a > h6.fw-bold

Snippet:

<h6 class="fw-bold">

Label: Archives & Personal Papers Collections

How to fix: Fix any of the following:

  • Heading order invalid

Element 3 HHS-6ca3642a

Element path: div.card > a > div.card-body > h6

Snippet:

<h6>

Label: IndexCat™

How to fix: Fix any of the following:

  • Heading order invalid

Download full axe findings JSON | Download full axe findings CSV

https://lhncbc.nlm.nih.gov

Lighthouse Accessibility Score: 83

Axe findings: 4

Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-86fdb845

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~56 people potentially excluded (2.4% prevalence × 2,323 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~100 people potentially excluded (4.3% prevalence × 2,323 affected page loads)

Affected elements (1):

Element 1 HHS-cf6aee3b

Element path: div.usa-container--full-width > div.usa-grid-container > div.dataset-title > h2

Snippet:

<h2>

Label: LHNCBC Project Spotlight

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.59 (foreground color: #5a75aa, background color: #dce4ef, font size: 17.2pt (22.884px), font weight: normal). Expected contrast ratio of 4.5:1
Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-f587748a

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~23 people potentially excluded (1.0% prevalence × 2,323 affected page loads) People who are deaf and cannot hear audio content. Estimated ~7 people potentially excluded (0.3% prevalence × 2,323 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~51 people potentially excluded (2.2% prevalence × 2,323 affected page loads)

Affected elements (5):

Element 1 HHS-ea06b140

Element path: div.usa-grid-container > div.grid-row > div.desktop:grid-col-5 > h5.banner-motto

Snippet:

<h5 class="banner-motto">

Label: "We Must Develop a Communications System so that the Miraculous Triumphs of Mod…

How to fix: Fix any of the following:

  • Heading order invalid

Element 2 HHS-6e006e36

Element path: div.grid-row > div.body-title > a > h4

Snippet:

<h4>

Label: Health Information Standards and Discovery

How to fix: Fix any of the following:

  • Heading order invalid

Element 3 HHS-460de652

Element path: div.grid-row > div.informatics-info > a > h4

Snippet:

<h4>

Label: NLM's Lister Hill Center

How to fix: Fix any of the following:

  • Heading order invalid

Element 4 HHS-dd8f04d9

Element path: div.usa-grid-container > div.downloads > div.download-icons > h4

Snippet:

<h4>

Label: RxNav

How to fix: Fix any of the following:

  • Heading order invalid

Element 5 HHS-3df652ed

Element path: a > div.card > div.card-body-home > h5.margin-y-0

Snippet:

<h5 class="margin-y-0">

Label: CCOI

How to fix: Fix any of the following:

  • Heading order invalid
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-d4e394fa

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~51 people potentially excluded (2.2% prevalence × 2,323 affected page loads) People with limited reach, strength, or stamina. Estimated ~135 people potentially excluded (5.8% prevalence × 2,323 affected page loads)

Affected elements (6):

Element 1 HHS-fed481d3

Element path: div.header-logo > div.display-flex > div.display-flex > a

Snippet:

<a href="https://www.nlm.nih.gov">

Label: portion of logo that reads National Library of Medicine

How to fix: Fix any of the following:

  • Target has insufficient size (264.5px by 23.1px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.2px instead of at least 24px.

Element 2 HHS-fed481d3

Element path: div.header-logo > div.display-flex > div.display-flex > a

Snippet:

<a href="/index.html">

Label: portion of logo that reads Lister Hill National Center for Biomedical Communica…

How to fix: Fix any of the following:

  • Target has insufficient size (264.5px by 16px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.2px instead of at least 24px.

Element 3 HHS-e517016f

Element path: div.grid-row > div.desktop:grid-col-3 > p > a.text-white

Snippet:

<a href="https://www.nih.gov/institutes-nih/nih-office-director/office-communicatio…" class="text-white">

Label: FOIA

How to fix: Fix any of the following:

  • Target has insufficient size (34.8px by 19px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18.4px instead of at least 24px.

Element 4 HHS-292be2c8

Element path: div.grid-row > div.desktop:grid-col-3 > p > a.supportLink

Snippet:

<a class="supportLink text-white" href="https://support.nlm.nih.gov/support/create-case/?from=https://lhncbc.nlm.n…">

Label: NLM Support Center

How to fix: Fix any of the following:

  • Target has insufficient size (145.3px by 19px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18.4px instead of at least 24px.

Element 5 HHS-e517016f

Element path: div.grid-row > div.desktop:grid-col-3 > p > a.text-white

Snippet:

<a href="//www.nlm.nih.gov/accessibility.html" class="text-white">

Label: Accessibility

How to fix: Fix any of the following:

  • Target has insufficient size (89.5px by 19px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 12.8px instead of at least 24px.

Element 6 HHS-e517016f

Element path: div.grid-row > div.desktop:grid-col-3 > p > a.text-white

Snippet:

<a href="//www.nlm.nih.gov/careers/careers.html" class="text-white">

Label: Careers

How to fix: Fix any of the following:

  • Target has insufficient size (55px by 19px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 19px instead of at least 24px.
Document does not have a main landmark. (rule: landmark-one-main) HHS-7e5a3384

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~23 people potentially excluded (1.0% prevalence × 2,323 affected page loads) People who are deaf and cannot hear audio content. Estimated ~7 people potentially excluded (0.3% prevalence × 2,323 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~51 people potentially excluded (2.2% prevalence × 2,323 affected page loads)

Affected elements (1):

Element 1 HHS-dd6c5b36

Element path: html

Snippet:

<html lang="en">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://ncbiinsights.ncbi.nlm.nih.gov

Lighthouse Accessibility Score: 90

Axe findings: 3

Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-f857cf60

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~21 people potentially excluded (1.0% prevalence × 2,076 affected page loads) People who are deaf and cannot hear audio content. Estimated ~6 people potentially excluded (0.3% prevalence × 2,076 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~46 people potentially excluded (2.2% prevalence × 2,076 affected page loads)

Affected elements (7):

Element 1 HHS-8477adaf

Element path: main#main > article#post-15833 > div.entry-content > h5

Snippet:

<h5>

Label: What’s new? 

How to fix: Fix any of the following:

  • Heading order invalid

Element 2 HHS-a3eed3b5

Element path: main#main > article#post-15814 > div.entry-content > h5

Snippet:

<h5>

Label: What do you need to do? 

How to fix: Fix any of the following:

  • Heading order invalid

Element 3 HHS-5d51b720

Element path: main#main > article#post-15766 > div.entry-content > h5

Snippet:

<h5>

Label: What’s new? 

How to fix: Fix any of the following:

  • Heading order invalid

Element 4 HHS-2606f5bd

Element path: main#main > article#post-15492 > div.entry-content > h5

Snippet:

<h5>

Label: What’s new? 

How to fix: Fix any of the following:

  • Heading order invalid

Element 5 HHS-d16df2f1

Element path: main#main > article#post-15735 > div.entry-content > h3

Snippet:

<h3>

Label: With a new tool to compare clinical genetic tests! 

How to fix: Fix any of the following:

  • Heading order invalid

Element 6 HHS-086ef5e6

Element path: main#main > article#post-15735 > div.entry-content > h5

Snippet:

<h5>

Label: What’s new? 

How to fix: Fix any of the following:

  • Heading order invalid

Element 7 HHS-a6588a7c

Element path: main#main > article#post-15652 > div.entry-content > h5

Snippet:

<h5 aria-level="5">

Label: What’s included in this release? 

How to fix: Fix any of the following:

  • Heading order invalid
Form elements do not have associated labels (rule: label) HHS-f4ba814d

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Disabilities affected: People who are blind or have no functional vision. Estimated ~21 people potentially excluded (1.0% prevalence × 2,076 affected page loads) People with low vision who need magnification or high contrast. Estimated ~50 people potentially excluded (2.4% prevalence × 2,076 affected page loads) People who are deaf and cannot hear audio content. Estimated ~6 people potentially excluded (0.3% prevalence × 2,076 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~46 people potentially excluded (2.2% prevalence × 2,076 affected page loads)

Affected elements (1):

Element 1 HHS-0d88c9e0

Element path: div.site-header-top > div.inner > form#header-search > input.search-field

Snippet:

<input type="search" class="search-field" name="s" value="">

How to fix: Fix any of the following:

  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element has no placeholder attribute
  • Element's default semantics were not overridden with role="none" or role="presentation"
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-06d5ace9

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~46 people potentially excluded (2.2% prevalence × 2,076 affected page loads) People with limited reach, strength, or stamina. Estimated ~120 people potentially excluded (5.8% prevalence × 2,076 affected page loads)

Affected elements (10):

Element 1 HHS-fd22fd04

Element path: div.meta-wrapper > ul.post-tags > li > a

Snippet:

<a href="https://ncbiinsights.ncbi.nlm.nih.gov/tag/comparative-genomics-resource-cg…" rel="tag">

Label: COMPARATIVE GENOMICS RESOURCE (CGR)

How to fix: Fix any of the following:

  • Target has insufficient size (280.4px by 16.1px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 19px instead of at least 24px.

Element 2 HHS-fd22fd04

Element path: div.meta-wrapper > ul.post-tags > li > a

Snippet:

<a href="https://ncbiinsights.ncbi.nlm.nih.gov/tag/genbank/" rel="tag">

Label: GENBANK

How to fix: Fix any of the following:

  • Target has insufficient size (63.8px by 16.1px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 19px instead of at least 24px.

Element 3 HHS-fd22fd04

Element path: div.meta-wrapper > ul.post-tags > li > a

Snippet:

<a href="https://ncbiinsights.ncbi.nlm.nih.gov/tag/genome-data-viewer/" rel="tag">

Label: GENOME DATA VIEWER (GDV)

How to fix: Fix any of the following:

  • Target has insufficient size (187.6px by 16.1px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 19px instead of at least 24px.

Element 4 HHS-fd22fd04

Element path: div.meta-wrapper > ul.post-tags > li > a

Snippet:

<a href="https://ncbiinsights.ncbi.nlm.nih.gov/tag/comparative-genomics-resource-cg…" rel="tag">

Label: COMPARATIVE GENOMICS RESOURCE (CGR)

How to fix: Fix any of the following:

  • Target has insufficient size (280.4px by 16.1px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 19px instead of at least 24px.

Element 5 HHS-571ab897

Element path: div.row > div.col-lg-3 > p > a.text-white

Snippet:

<a href="https://www.nlm.nih.gov/copyright.html" class="text-white">

Label: Copyright

How to fix: Fix any of the following:

  • Target has insufficient size (78.5px by 23px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 21px instead of at least 24px.

Element 6 HHS-571ab897

Element path: div.row > div.col-lg-3 > p > a.text-white

Snippet:

<a href="https://www.nih.gov/institutes-nih/nih-office-director/office-communicatio…" class="text-white">

Label: FOIA

How to fix: Fix any of the following:

  • Target has insufficient size (37.2px by 23px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.6px instead of at least 24px.

Element 7 HHS-571ab897

Element path: div.row > div.col-lg-3 > p > a.text-white

Snippet:

<a href="https://www.nlm.nih.gov/privacy.html" class="text-white">

Label: Privacy

How to fix: Fix any of the following:

  • Target has insufficient size (58.2px by 23px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.6px instead of at least 24px.

Element 8 HHS-e10d2401

Element path: div.row > div.col-lg-3 > p > a.supportLink

Snippet:

<a class="supportLink text-white" href="https://support.nlm.nih.gov/">

Label: Help

How to fix: Fix any of the following:

  • Target has insufficient size (37.3px by 23px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.6px instead of at least 24px.

Element 9 HHS-571ab897

Element path: div.row > div.col-lg-3 > p > a.text-white

Snippet:

<a href="https://www.nlm.nih.gov/accessibility.html" class="text-white">

Label: Accessibility

How to fix: Fix any of the following:

  • Target has insufficient size (98.3px by 23px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.6px instead of at least 24px.

Element 10 HHS-571ab897

Element path: div.row > div.col-lg-3 > p > a.text-white

Snippet:

<a href="https://www.nlm.nih.gov/careers/careers.html" class="text-white">

Label: Careers

How to fix: Fix any of the following:

  • Target has insufficient size (60.5px by 23px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23px instead of at least 24px.

Download full axe findings JSON | Download full axe findings CSV

https://www.cdc.gov

Lighthouse Accessibility Score: 91

Axe findings: 3

Links do not have a discernible name (rule: link-name) HHS-c9d3808c

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~17 people potentially excluded (1.0% prevalence × 1,715 affected page loads) People who are deaf and cannot hear audio content. Estimated ~5 people potentially excluded (0.3% prevalence × 1,715 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~38 people potentially excluded (2.2% prevalence × 1,715 affected page loads)

Affected elements (1):

Element 1 HHS-98d843a4

Element path: nav.mobile-navbar > div.mobile-navbar_top > div.d-flex > a#cdc-mobile-search-toggle

Snippet:

<a id="cdc-mobile-search-toggle" class="nav-link" href="#" aria-controls="cdc-mobile-search-form">

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
Skip links are not focusable. (rule: skip-link) HHS-791f687f

Including a skip link can help users skip to the main content to save time. Learn more about skip links.

Disabilities affected: People who are blind or have no functional vision. Estimated ~17 people potentially excluded (1.0% prevalence × 1,715 affected page loads) People who are deaf and cannot hear audio content. Estimated ~5 people potentially excluded (0.3% prevalence × 1,715 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~38 people potentially excluded (2.2% prevalence × 1,715 affected page loads)

Affected elements (1):

Element 1 HHS-9f39fc4e

Element path: body.cdc-post-type--cdc-homepage > div#skipmenu > a.skippy

Snippet:

<a class="skippy visually-hidden-focusable" href="#headerSearch" tabindex="2">

Label: Skip to search

How to fix: Fix any of the following:

  • No skip link target
Some elements have a `[tabindex]` value greater than 0 (rule: tabindex) HHS-ef80656d

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Disabilities affected: People who are blind or have no functional vision. Estimated ~17 people potentially excluded (1.0% prevalence × 1,715 affected page loads) People who are deaf and cannot hear audio content. Estimated ~5 people potentially excluded (0.3% prevalence × 1,715 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~38 people potentially excluded (2.2% prevalence × 1,715 affected page loads)

Affected elements (3):

Element 1 HHS-96f7fd9f

Element path: body.cdc-post-type--cdc-homepage > div#skipmenu > a.skippy

Snippet:

<a class="skippy visually-hidden-focusable" href="#content" tabindex="1">

Label: Skip to site content

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 2 HHS-96f7fd9f

Element path: body.cdc-post-type--cdc-homepage > div#skipmenu > a.skippy

Snippet:

<a class="skippy visually-hidden-focusable" href="#headerSearch" tabindex="2">

Label: Skip to search

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 3 HHS-53211449

Element path: div#hero-carousel > div.carousel-indicators > div.carousel-indicators-wrapper > button#animation-toggle

Snippet:

<button id="animation-toggle" aria-pressed="true" tabindex="3">

Label: Pause carousel

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Download full axe findings JSON | Download full axe findings CSV

https://fdanj.nlm.nih.gov

Lighthouse Accessibility Score: 95

Axe findings: 2

Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-1e704142

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~16 people potentially excluded (1.0% prevalence × 1,647 affected page loads) People who are deaf and cannot hear audio content. Estimated ~5 people potentially excluded (0.3% prevalence × 1,647 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~36 people potentially excluded (2.2% prevalence × 1,647 affected page loads)

Affected elements (1):

Element 1 HHS-d117ae5a

Element path: div.row > div.col-md-6 > div > h3

Snippet:

<h3>

Label: Evidence Files Archival Collection

How to fix: Fix any of the following:

  • Heading order invalid
Links rely on color to be distinguishable. (rule: link-in-text-block) HHS-4f6a937a

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~40 people potentially excluded (2.4% prevalence × 1,647 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~71 people potentially excluded (4.3% prevalence × 1,647 affected page loads)

Affected elements (1):

Element 1 HHS-ffcff372

Element path: div.col-md-6 > div > p > a

Snippet:

<a href="https://findingaids.nlm.nih.gov/repositories/ammp/resources/fdanj608">

Label: archival collection

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.43:1 with the surrounding text. (Minimum contrast is 3:1, link text: #326295, surrounding text: #212529)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Download full axe findings JSON | Download full axe findings CSV

https://precision.fda.gov

Lighthouse Accessibility Score: 91

Axe findings: 2

Buttons do not have an accessible name (rule: button-name) HHS-de034caf

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~16 people potentially excluded (1.0% prevalence × 1,599 affected page loads) People who are deaf and cannot hear audio content. Estimated ~5 people potentially excluded (0.3% prevalence × 1,599 affected page loads)

Affected elements (2):

Element 1 HHS-2d1d3835

Element path: footer.grid > div.flex > div.ThemeToggle__StyledThemeToggle-bpcezo > button

Snippet:

<button data-active="true">

How to fix: Fix any of the following:

  • Element does not have inner text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • Element's default semantics were not overridden with role="none" or role="presentation"

Element 2 HHS-2d1d3835

Element path: footer.grid > div.flex > div.ThemeToggle__StyledThemeToggle-bpcezo > button

Snippet:

<button data-active="false">

How to fix: Fix any of the following:

  • Element does not have inner text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • Element's default semantics were not overridden with role="none" or role="presentation"
Links do not have a discernible name (rule: link-name) HHS-bb92d27d

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~16 people potentially excluded (1.0% prevalence × 1,599 affected page loads) People who are deaf and cannot hear audio content. Estimated ~5 people potentially excluded (0.3% prevalence × 1,599 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~35 people potentially excluded (2.2% prevalence × 1,599 affected page loads)

Affected elements (1):

Element 1 HHS-eb6188cf

Element path: div > ul.mt-0 > li.mb-2 > a

Snippet:

<a href="mailto:precisionfda@fda.hhs.gov">

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute

Download full axe findings JSON | Download full axe findings CSV

https://nihms.nih.gov

Lighthouse Accessibility Score: 96

Axe findings: 1

`[accesskey]` values are not unique (rule: accesskeys) HHS-bc33f52e

Access keys let users quickly focus a part of the page. For proper navigation, each access key must be unique. Learn more about access keys.

Affected elements (2):

Element 1 HHS-9992e3d4

Element path: body > a#nws_header_accesskey_1

Snippet:

<a id="nws_header_accesskey_1" href="https://www.ncbi.nlm.nih.gov" class="usa-sr-only" accesskey="1" tabindex="-1">

Label: NCBI Homepage

How to fix: Fix all of the following:

  • Document has multiple elements with the same accesskey

Element 2 HHS-52931a33

Element path: body > a#nws_header_accesskey_3

Snippet:

<a id="nws_header_accesskey_3" href="#maincontent" class="usa-sr-only" accesskey="3" tabindex="-1">

Label: Main Content

How to fix: Fix all of the following:

  • Document has multiple elements with the same accesskey

Download full axe findings JSON | Download full axe findings CSV

https://ndc.services.cdc.gov

Lighthouse Accessibility Score: 100

Axe findings: 1

Elements with visible text labels do not have matching accessible names. (rule: label-content-name-mismatch) HHS-cff26831

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Disabilities affected: People who are blind or have no functional vision. Estimated ~13 people potentially excluded (1.0% prevalence × 1,331 affected page loads) People with low vision who need magnification or high contrast. Estimated ~32 people potentially excluded (2.4% prevalence × 1,331 affected page loads) People who are deaf and cannot hear audio content. Estimated ~4 people potentially excluded (0.3% prevalence × 1,331 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~29 people potentially excluded (2.2% prevalence × 1,331 affected page loads)

Affected elements (3):

Element 1 HHS-14235737

Element path: div.row > div.col-md-6 > p > a

Snippet:

<a href="https://ndc.services.cdc.gov/conditions/lead-elevated-blood-levels-childre…" aria-label="Link for condition Lead, elevated blood levels, children ( page">

Label: Lead, elevated blood levels, children (<16 Years)

How to fix: Fix any of the following:

  • Text inside the element is not included in the accessible name

Element 2 HHS-14235737

Element path: div.row > div.col-md-6 > p > a

Snippet:

<a href="https://ndc.services.cdc.gov/conditions/streptococcus-pneumoniae-invasive-…" aria-label="Link for condition Streptococcus pneumoniae,  invasive disease (child,  pa…">

Label: Streptococcus pneumoniae, invasive disease (child, <5 years)

How to fix: Fix any of the following:

  • Text inside the element is not included in the accessible name

Element 3 HHS-14235737

Element path: div.row > div.col-md-6 > p > a

Snippet:

<a href="https://ndc.services.cdc.gov/conditions/streptococcus-pneumoniae-invasive-…" aria-label="Link for condition Streptococcus pneumoniae, invasive disease non-drug res…">

Label: Streptococcus pneumoniae, invasive disease non-drug resistant (child, <5 years)

How to fix: Fix any of the following:

  • Text inside the element is not included in the accessible name

Download full axe findings JSON | Download full axe findings CSV

https://nhlbi.nih.gov

Lighthouse Accessibility Score: 96

Axe findings: 1

Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-59cedeac

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~29 people potentially excluded (2.2% prevalence × 1,331 affected page loads) People with limited reach, strength, or stamina. Estimated ~77 people potentially excluded (5.8% prevalence × 1,331 affected page loads)

Affected elements (5):

Element 1 HHS-c3f3f37b

Element path: nav.block > ul.menu > li.menu-item > a

Snippet:

<a href="https://eeo.nih.gov/no-fear-act" rel="noreferrer">

Label: No FEAR Act Data

How to fix: Fix any of the following:

  • Target has insufficient size (116.4px by 18px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.2px instead of at least 24px.

Element 2 HHS-539ebd42

Element path: nav.block > ul.menu > li.menu-item > a.ext-icon

Snippet:

<a class="ext-icon" href="#">

Label: (link is external)

How to fix: Fix any of the following:

  • Target has insufficient size (24px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 14px instead of at least 24px.

Element 3 HHS-c55a0916

Element path: nav.block > ul.menu > li.menu-item > a.ext

Snippet:

<a href="https://www.hhs.gov/" rel="nofollow noopener noreferrer" class="ext" target="_blank">

Label: Health and Human Services

How to fix: Fix any of the following:

  • Target has insufficient size (167.9px by 18px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20px instead of at least 24px.

Element 4 HHS-c3f3f37b

Element path: nav.block > ul.menu > li.menu-item > a

Snippet:

<a href="https://www.nih.gov/" rel="noreferrer">

Label: National Institutes of Health

How to fix: Fix any of the following:

  • Target has insufficient size (181.1px by 18px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18px instead of at least 24px.

Element 5 HHS-539ebd42

Element path: nav.block > ul.menu > li.menu-item > a.ext-icon

Snippet:

<a class="ext-icon" href="#">

Label: (link is external)

How to fix: Fix any of the following:

  • Target has insufficient size (24px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 14px instead of at least 24px.

Download full axe findings JSON | Download full axe findings CSV

https://dbgap.ncbi.nlm.nih.gov

Lighthouse Accessibility Score: 93

Axe findings: 2

Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-8cae9120

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~29 people potentially excluded (2.4% prevalence × 1,217 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~52 people potentially excluded (4.3% prevalence × 1,217 affected page loads)

Affected elements (1):

Element 1 HHS-f3c9293a

Element path: div.ncbi-layout__single-column > section.rss-stats-section > div.stats-container > a.full-stats-link

Snippet:

<a class="full-stats-link" href="/statistics/">

Label: See More Statistics

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.11 (foreground color: #0071bc, background color: #d9e8f6, font size: 12.0pt (16px), font weight: bold). Expected contrast ratio of 4.5:1
Document doesn't have a `<title>` element (rule: document-title) HHS-a99a6c48

The title gives screen reader users an overview of the page, and search engine users rely on it heavily to determine if a page is relevant to their search. Learn more about document titles.

Disabilities affected: People who are blind or have no functional vision. Estimated ~12 people potentially excluded (1.0% prevalence × 1,217 affected page loads) People who are deaf and cannot hear audio content. Estimated ~4 people potentially excluded (0.3% prevalence × 1,217 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~27 people potentially excluded (2.2% prevalence × 1,217 affected page loads)

Affected elements (1):

Element 1 HHS-8ca72c24

Element path: html

Snippet:

<html lang="en" class="">

How to fix: Fix any of the following:

  • Document does not have a non-empty <title> element

Download full axe findings JSON | Download full axe findings CSV

https://mor.nlm.nih.gov

Lighthouse Accessibility Score: 79

Axe findings: 4

Buttons do not have an accessible name (rule: button-name) HHS-88229b04

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~12 people potentially excluded (1.0% prevalence × 1,181 affected page loads) People who are deaf and cannot hear audio content. Estimated ~4 people potentially excluded (0.3% prevalence × 1,181 affected page loads)

Affected elements (1):

Element 1 HHS-84f2fbdc

Element path: header.usa-header > div.usa-nav-layout > div.LHC-menu > button.usa-menu-btn

Snippet:

<button class="usa-menu-btn">

How to fix: Fix any of the following:

  • Element does not have inner text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • Element's default semantics were not overridden with role="none" or role="presentation"
Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-9c8033bc

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~12 people potentially excluded (1.0% prevalence × 1,181 affected page loads) People who are deaf and cannot hear audio content. Estimated ~4 people potentially excluded (0.3% prevalence × 1,181 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~26 people potentially excluded (2.2% prevalence × 1,181 affected page loads)

Affected elements (1):

Element 1 HHS-6c4a1256

Element path: div.usa-grid-container > div.grid-row > div.desktop:grid-col-10 > h5.banner-motto

Snippet:

<h5 class="banner-motto">

Label: The Medical Terminology project focuses on terminology and ontology in the biom…

How to fix: Fix any of the following:

  • Heading order invalid
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-c53f1001

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~26 people potentially excluded (2.2% prevalence × 1,181 affected page loads) People with limited reach, strength, or stamina. Estimated ~68 people potentially excluded (5.8% prevalence × 1,181 affected page loads)

Affected elements (8):

Element 1 HHS-080866bb

Element path: div.header-logo > div.display-flex > div.display-flex > a

Snippet:

<a href="https://www.nlm.nih.gov">

How to fix: Fix any of the following:

  • Target has insufficient size (264.5px by 20.1px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 9.8px instead of at least 24px.

Element 2 HHS-080866bb

Element path: div.header-logo > div.display-flex > div.display-flex > a

Snippet:

<a href="/index.html">

How to fix: Fix any of the following:

  • Target has insufficient size (264.5px by 13.6px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 9.8px instead of at least 24px.

Element 3 HHS-9fe240f8

Element path: div.grid-col-10 > ul > li > a

Snippet:

<a href="/MOR/pubs/offi.html">

Label: Publications

How to fix: Fix any of the following:

  • Target has insufficient size (70.5px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 22.8px instead of at least 24px.

Element 4 HHS-9fe240f8

Element path: div.grid-col-10 > ul > li > a

Snippet:

<a href="/MOR/pubs/pres.html">

Label: Presentations

How to fix: Fix any of the following:

  • Target has insufficient size (79px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 22.8px instead of at least 24px.

Element 5 HHS-e3ec59e4

Element path: div.grid-row > div.desktop:grid-col-3 > p > a.text-white

Snippet:

<a href="https://www.nih.gov/institutes-nih/nih-office-director/office-communicatio…" class="text-white">

Label: FOIA

How to fix: Fix any of the following:

  • Target has insufficient size (25px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.6px instead of at least 24px.

Element 6 HHS-643312e9

Element path: div.grid-row > div.desktop:grid-col-3 > p > a.supportLink

Snippet:

<a class="supportLink text-white" href="https://support.nlm.nih.gov/support/create-case/?from=https://lhncbc.nlm.n…">

Label: NLM Support Center

How to fix: Fix any of the following:

  • Target has insufficient size (104.6px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.6px instead of at least 24px.

Element 7 HHS-e3ec59e4

Element path: div.grid-row > div.desktop:grid-col-3 > p > a.text-white

Snippet:

<a href="//www.nlm.nih.gov/accessibility.html" class="text-white">

Label: Accessibility

How to fix: Fix any of the following:

  • Target has insufficient size (64.5px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18.6px instead of at least 24px.

Element 8 HHS-e3ec59e4

Element path: div.grid-row > div.desktop:grid-col-3 > p > a.text-white

Snippet:

<a href="//www.nlm.nih.gov/careers/careers.html" class="text-white">

Label: Careers

How to fix: Fix any of the following:

  • Target has insufficient size (39.6px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18.6px instead of at least 24px.
Document does not have a main landmark. (rule: landmark-one-main) HHS-4064b568

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~12 people potentially excluded (1.0% prevalence × 1,181 affected page loads) People who are deaf and cannot hear audio content. Estimated ~4 people potentially excluded (0.3% prevalence × 1,181 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~26 people potentially excluded (2.2% prevalence × 1,181 affected page loads)

Affected elements (1):

Element 1 HHS-ae97de4e

Element path: html

Snippet:

<html lang="en">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://catalog.nlm.nih.gov

Lighthouse Accessibility Score: 93

Axe findings: 2

Links rely on color to be distinguishable. (rule: link-in-text-block) HHS-b7f30aa3

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~28 people potentially excluded (2.4% prevalence × 1,166 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~50 people potentially excluded (4.3% prevalence × 1,166 affected page loads)

Affected elements (4):

Element 1 HHS-b9e02af8

Element path: md-card.default-card > md-card-content > p > a.md-primoExplore-theme

Snippet:

<a href="https://www.nlm.nih.gov/tsd/catalog_help/catalogupdates/index.html" class="md-primoExplore-theme">

Label: Catalog Updates

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 1.79:1 with the surrounding text. (Minimum contrast is 3:1, link text: #326295, surrounding text: #3a3a3a)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 2 HHS-b9e02af8

Element path: md-card.default-card > md-card-content > p > a.md-primoExplore-theme

Snippet:

<a href="https://www.nlm.nih.gov/tsd/catalog_help/requestlibrarymaterials/index.html" class="md-primoExplore-theme">

Label: help

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 1.79:1 with the surrounding text. (Minimum contrast is 3:1, link text: #326295, surrounding text: #3a3a3a)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 3 HHS-183b209a

Element path: div.layout-column > md-card.default-card > md-card-content > a.arrow-link

Snippet:

<a href="https://www.nlm.nih.gov/tsd/catalog_help/index.html" rel="help" class="arrow-link md-primoExplore-theme" target="_blank">

Label: LocatorPlus Catalog Help

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 1.79:1 with the surrounding text. (Minimum contrast is 3:1, link text: #326295, surrounding text: #3a3a3a)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 4 HHS-183b209a

Element path: div.layout-column > md-card.default-card > md-card-content > a.arrow-link

Snippet:

<a href="https://support.nlm.nih.gov/" class="arrow-link md-primoExplore-theme">

Label: NLM Support Center.

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 1.79:1 with the surrounding text. (Minimum contrast is 3:1, link text: #326295, surrounding text: #3a3a3a)
  • The link has no styling (such as underline) to distinguish it from the surrounding text
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-b2bd58ae

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~26 people potentially excluded (2.2% prevalence × 1,166 affected page loads) People with limited reach, strength, or stamina. Estimated ~68 people potentially excluded (5.8% prevalence × 1,166 affected page loads)

Affected elements (3):

Element 1 HHS-b261e673

Element path: div.row > div.col-md-3 > p > a.text-white

Snippet:

<a href="https://www.nih.gov/institutes-nih/nih-office-director/office-communicatio…" class="text-white md-primoExplore-theme">

Label: FOIA

How to fix: Fix any of the following:

  • Target has insufficient size (29.3px by 20.5px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17.6px instead of at least 24px.

Element 2 HHS-b261e673

Element path: div.row > div.col-md-3 > p > a.text-white

Snippet:

<a href="https://www.nlm.nih.gov/accessibility.html" class="text-white md-primoExplore-theme">

Label: Accessibility

How to fix: Fix any of the following:

  • Target has insufficient size (76.5px by 20.5px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 19px instead of at least 24px.

Element 3 HHS-b261e673

Element path: div.row > div.col-md-3 > p > a.text-white

Snippet:

<a href="https://www.nlm.nih.gov/careers/careers.html" class="text-white md-primoExplore-theme">

Label: Careers

How to fix: Fix any of the following:

  • Target has insufficient size (47.5px by 20.5px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.6px instead of at least 24px.

Download full axe findings JSON | Download full axe findings CSV

https://findingaids.nlm.nih.gov

Lighthouse Accessibility Score: 99

Axe findings: 1

Document does not have a main landmark. (rule: landmark-one-main) HHS-1ff4e922

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~9 people potentially excluded (1.0% prevalence × 871 affected page loads) People who are deaf and cannot hear audio content. Estimated ~3 people potentially excluded (0.3% prevalence × 871 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~19 people potentially excluded (2.2% prevalence × 871 affected page loads)

Affected elements (1):

Element 1 HHS-4575d669

Element path: html

Snippet:

<html lang="en">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://jobs.cdc.gov

Lighthouse Accessibility Score: 96

Axe findings: 1

`<frame>` or `<iframe>` elements do not have a title (rule: frame-title) HHS-da85bb08

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Disabilities affected: People who are blind or have no functional vision. Estimated ~8 people potentially excluded (1.0% prevalence × 792 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2 people potentially excluded (0.3% prevalence × 792 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~17 people potentially excluded (2.2% prevalence × 792 affected page loads)

Affected elements (1):

Element 1 HHS-0c178a51

Element path: div.slick-track > div.card > div.embed-responsive > iframe.embed-responsive-item

Snippet:

<iframe class="embed-responsive-item" width="560" height="315" src="//www.youtube-nocookie.com/embed/Q90QD_wJ4zw?cc_load_policy=1&amp;wmode=opaque…" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen="">

How to fix: Fix any of the following:

  • Element has no title attribute
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element's default semantics were not overridden with role="none" or role="presentation"

Download full axe findings JSON | Download full axe findings CSV

https://wisqars.cdc.gov

Lighthouse Accessibility Score: 98

Axe findings: 1

Skip links are not focusable. (rule: skip-link) HHS-0a67f33f

Including a skip link can help users skip to the main content to save time. Learn more about skip links.

Disabilities affected: People who are blind or have no functional vision. Estimated ~7 people potentially excluded (1.0% prevalence × 699 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2 people potentially excluded (0.3% prevalence × 699 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~15 people potentially excluded (2.2% prevalence × 699 affected page loads)

Affected elements (1):

Element 1 HHS-e096eb5a

Element path: div#__next > div.static-page > div#skipmenu > a.skippy

Snippet:

<a class="skippy sr-only-focusable" href="#share-nav">

Label: Skip directly to page options

How to fix: Fix any of the following:

  • No skip link target

Download full axe findings JSON | Download full axe findings CSV

https://nimh.nih.gov

Lighthouse Accessibility Score: 93

Axe findings: 3

Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-ddc57050

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~7 people potentially excluded (1.0% prevalence × 679 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2 people potentially excluded (0.3% prevalence × 679 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~15 people potentially excluded (2.2% prevalence × 679 affected page loads)

Affected elements (3):

Element 1 HHS-e57f8f77

Element path: section.news_feature > div.news_feature_inner > span.caption > h4

Snippet:

<h4>

Label: Developing Tools for Measuring Mental Health Outcomes

How to fix: Fix any of the following:

  • Heading order invalid

Element 2 HHS-e57f8f77

Element path: section.news_feature > div.news_feature_inner > span.caption > h4

Snippet:

<h4>

Label: Acting Director of NIMH

How to fix: Fix any of the following:

  • Heading order invalid

Element 3 HHS-446d2c8d

Element path: div.field > div#block-footer > div.col-xl-4 > h5

Snippet:

<h5>

Label: NIMH Resources

How to fix: Fix any of the following:

  • Heading order invalid
Links rely on color to be distinguishable. (rule: link-in-text-block) HHS-3e2fc26f

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~16 people potentially excluded (2.4% prevalence × 679 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~29 people potentially excluded (4.3% prevalence × 679 affected page loads)

Affected elements (1):

Element 1 HHS-c65d091e

Element path: div.col-xl-4 > div.ofh > p > a

Snippet:

<a href="/health/publications/espanol" data-entity-type="node" data-entity-uuid="586d75ba-9cbb-40d4-a7d0-cd6e00781e3f" data-entity-substitution="canonical">

Label: En español

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 2.31:1 with the surrounding text. (Minimum contrast is 3:1, link text: #066abc, surrounding text: #293340)
  • The link has no styling (such as underline) to distinguish it from the surrounding text
Document does not have a main landmark. (rule: landmark-one-main) HHS-bd70f3e6

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~7 people potentially excluded (1.0% prevalence × 679 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2 people potentially excluded (0.3% prevalence × 679 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~15 people potentially excluded (2.2% prevalence × 679 affected page loads)

Affected elements (1):

Element 1 HHS-dfcdcb8f

Element path: html

Snippet:

<html lang="en" dir="ltr" prefix="og: https://ogp.me/ns#" data-nid="8429">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://profiles.nlm.nih.gov

Lighthouse Accessibility Score: 96

Axe findings: 1

Links do not have a discernible name (rule: link-name) HHS-9fa1aded

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~6 people potentially excluded (1.0% prevalence × 646 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2 people potentially excluded (0.3% prevalence × 646 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~14 people potentially excluded (2.2% prevalence × 646 affected page loads)

Affected elements (1):

Element 1 HHS-42a5f7f6

Element path: body.blacklight-exhibits > nav.navbar > div.container > a.navbar-brand

Snippet:

<a class="navbar-brand" href="/">

Label: NLM Profiles in Science logo

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute

Download full axe findings JSON | Download full axe findings CSV

https://datasetcatalog.nlm.nih.gov

Lighthouse Accessibility Score: 91

Axe findings: 3

Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-00baaf1d

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~15 people potentially excluded (2.4% prevalence × 643 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~28 people potentially excluded (4.3% prevalence × 643 affected page loads)

Affected elements (8):

Element 1 HHS-10f153a3

Element path: div.flex > div.mr-[16px] > div.flex > span.text-[11px]

Snippet:

<span class="text-[11px] leading-[12px] text-center">

Label: Coming Soon

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 2.53 (foreground color: #ffffff, background color: #9ca3af, font size: 8.3pt (11px), font weight: normal). Expected contrast ratio of 4.5:1

Element 2 HHS-338a8636

Element path: div.flex > div > h3 > span.text-decoration-none

Snippet:

<span class="text-decoration-none text-nih-grey-500 cursor-not-allowed">

Label: Clinical Trials (Coming Soon)

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.41 (foreground color: #787878, background color: #ffffff, font size: 15.0pt (20px), font weight: normal). Expected contrast ratio of 4.5:1

Element 3 HHS-a7a1f822

Element path: div.mb-[40px] > div.flex > div > div.mb-1

Snippet:

<div class="mb-1 text-gray-400">

Label: Clinical Research Studies

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 2.53 (foreground color: #9ca3af, background color: #ffffff, font size: 12.0pt (16px), font weight: normal). Expected contrast ratio of 4.5:1

Element 4 HHS-1570d1b9

Element path: div.mb-[40px] > div.flex > div > p.mb-0

Snippet:

<p class="mb-0 text-gray-400" style="overflow: hidden; text-overflow: ellipsis; display: -webkit-box;">

Label: ClinicalTrials.gov is a website and online database of clinical research studie…

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 2.53 (foreground color: #9ca3af, background color: #ffffff, font size: 12.0pt (16px), font weight: normal). Expected contrast ratio of 4.5:1

Element 5 HHS-10f153a3

Element path: div.flex > div.mr-[16px] > div.flex > span.text-[11px]

Snippet:

<span class="text-[11px] leading-[12px] text-center">

Label: Coming Soon

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 2.53 (foreground color: #ffffff, background color: #9ca3af, font size: 8.3pt (11px), font weight: normal). Expected contrast ratio of 4.5:1

Element 6 HHS-338a8636

Element path: div.flex > div > h3 > span.text-decoration-none

Snippet:

<span class="text-decoration-none text-nih-grey-500 cursor-not-allowed">

Label: Vivli (Coming Soon)

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.41 (foreground color: #787878, background color: #ffffff, font size: 15.0pt (20px), font weight: normal). Expected contrast ratio of 4.5:1

Element 7 HHS-a7a1f822

Element path: div.mb-[40px] > div.flex > div > div.mb-1

Snippet:

<div class="mb-1 text-gray-400">

Label: Clinical Trial Data Sharing Platform

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 2.53 (foreground color: #9ca3af, background color: #ffffff, font size: 12.0pt (16px), font weight: normal). Expected contrast ratio of 4.5:1

Element 8 HHS-1570d1b9

Element path: div.mb-[40px] > div.flex > div > p.mb-0

Snippet:

<p class="mb-0 text-gray-400" style="overflow: hidden; text-overflow: ellipsis; display: -webkit-box;">

Label: Vivli is an independent, non-profit organization that has developed a global da…

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 2.53 (foreground color: #9ca3af, background color: #ffffff, font size: 12.0pt (16px), font weight: normal). Expected contrast ratio of 4.5:1
Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-2a5ad778

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~6 people potentially excluded (1.0% prevalence × 643 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2 people potentially excluded (0.3% prevalence × 643 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~14 people potentially excluded (2.2% prevalence × 643 affected page loads)

Affected elements (1):

Element 1 HHS-13c30cc5

Element path: div.text-nih-white > div.mx-auto > div.mb-[8px] > h5.block

Snippet:

<h5 class="block">

Label: Search 2,322,888 datasets

How to fix: Fix any of the following:

  • Heading order invalid
Links do not have a discernible name (rule: link-name) HHS-99281744

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~6 people potentially excluded (1.0% prevalence × 643 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2 people potentially excluded (0.3% prevalence × 643 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~14 people potentially excluded (2.2% prevalence × 643 affected page loads)

Affected elements (4):

Element 1 HHS-c64a428e

Element path: div.flex > ul.flex > li > a

Snippet:

<a href="https://www.facebook.com/nationallibraryofmedicine" target="_blank" rel="noreferrer">

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute

Element 2 HHS-c64a428e

Element path: div.flex > ul.flex > li > a

Snippet:

<a href="https://www.linkedin.com/company/national-library-of-medicine-nlm/" target="_blank" rel="noreferrer">

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute

Element 3 HHS-c64a428e

Element path: div.flex > ul.flex > li > a

Snippet:

<a href="https://x.com/NLM_NIH" target="_blank" rel="noreferrer">

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute

Element 4 HHS-c64a428e

Element path: div.flex > ul.flex > li > a

Snippet:

<a href="https://www.youtube.com/user/NLMNIH" target="_blank" rel="noreferrer">

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute

Download full axe findings JSON | Download full axe findings CSV

https://circulatingnow.nlm.nih.gov

Lighthouse Accessibility Score: 95

Axe findings: 1

Buttons do not have an accessible name (rule: button-name) HHS-79dd38c5

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~6 people potentially excluded (1.0% prevalence × 637 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2 people potentially excluded (0.3% prevalence × 637 affected page loads)

Affected elements (1):

Element 1 HHS-02528cb0

Element path: div.header-nav-search > div.header-navigation > nav#site-navigation > button.menu-toggle

Snippet:

<button class="menu-toggle" aria-controls="primary-menu" aria-expanded="false">

How to fix: Fix any of the following:

  • Element does not have inner text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • Element's default semantics were not overridden with role="none" or role="presentation"

Download full axe findings JSON | Download full axe findings CSV

https://thecommunityguide.org

Lighthouse Accessibility Score: 98

Axe findings: 1

Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-264122e8

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~6 people potentially excluded (1.0% prevalence × 607 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2 people potentially excluded (0.3% prevalence × 607 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~13 people potentially excluded (2.2% prevalence × 607 affected page loads)

Affected elements (1):

Element 1 HHS-772ffc28

Element path: div.row > div.col-md-12 > div.cdc-textblock > h3

Snippet:

<h3>

Label: Explore Popular Features of The Community Guide

How to fix: Fix any of the following:

  • Heading order invalid

Download full axe findings JSON | Download full axe findings CSV

https://preview.ncbi.nlm.nih.gov

Lighthouse Accessibility Score: 93

Axe findings: 2

Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-0254c42d

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~14 people potentially excluded (2.4% prevalence × 580 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~25 people potentially excluded (4.3% prevalence × 580 affected page loads)

Affected elements (6):

Element 1 HHS-cf27a487

Element path: ul.rss_items > li#ui-ncbiexpander-2 > div.expanderWrapper > p.date

Snippet:

<p class="date">

Label: 26 Mar 2026

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.54 (foreground color: #888888, background color: #ffffff, font size: 7.8pt (10.4px), font weight: normal). Expected contrast ratio of 4.5:1

Element 2 HHS-35a8ee18

Element path: ul.rss_items > li#ui-ncbiexpander-2 > div.expanderWrapper > p.desc

Snippet:

<p class="desc">

Label: NCBI, part of the National Library of Medicine (NLM), is excited to announce ou…

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1

Element 3 HHS-5a58ac68

Element path: ul.rss_items > li#ui-ncbiexpander-3 > div.expanderWrapper > p.date

Snippet:

<p class="date">

Label: 25 Mar 2026

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.54 (foreground color: #888888, background color: #ffffff, font size: 7.8pt (10.4px), font weight: normal). Expected contrast ratio of 4.5:1

Element 4 HHS-f5404805

Element path: ul.rss_items > li#ui-ncbiexpander-3 > div.expanderWrapper > p.desc

Snippet:

<p class="desc">

Label: To ensure the security and long-term stability of our data delivery infrastruct…

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1

Element 5 HHS-c0790df9

Element path: ul.rss_items > li#ui-ncbiexpander-4 > div.expanderWrapper > p.date

Snippet:

<p class="date">

Label: 24 Mar 2026

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 3.54 (foreground color: #888888, background color: #ffffff, font size: 7.8pt (10.4px), font weight: normal). Expected contrast ratio of 4.5:1

Element 6 HHS-5e6a76d5

Element path: ul.rss_items > li#ui-ncbiexpander-4 > div.expanderWrapper > p.desc

Snippet:

<p class="desc">

Label: RefSeq release 234 is now available online and from the FTP site! You can acces…

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-b14942f6

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~13 people potentially excluded (2.2% prevalence × 580 affected page loads) People with limited reach, strength, or stamina. Estimated ~34 people potentially excluded (5.8% prevalence × 580 affected page loads)

Affected elements (2):

Element 1 HHS-144e24b8

Element path: div.row > div.col-lg-3 > p > a.text-white

Snippet:

<a href="https://www.nlm.nih.gov/accessibility.html" class="text-white">

Label: Accessibility

How to fix: Fix any of the following:

  • Target has insufficient size (77.3px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23.8px instead of at least 24px.

Element 2 HHS-144e24b8

Element path: div.row > div.col-lg-3 > p > a.text-white

Snippet:

<a href="https://www.nlm.nih.gov/careers/careers.html" class="text-white">

Label: Careers

How to fix: Fix any of the following:

  • Target has insufficient size (49.8px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23.8px instead of at least 24px.

Download full axe findings JSON | Download full axe findings CSV

https://jats.nlm.nih.gov

Lighthouse Accessibility Score: 87

Axe findings: 3

Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-d4fcb524

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~14 people potentially excluded (2.4% prevalence × 565 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~24 people potentially excluded (4.3% prevalence × 565 affected page loads)

Affected elements (3):

Element 1 HHS-0e3db11a

Element path: div.portlet_content > ul > li.image > div.desc

Snippet:

<div class="desc" style="font-size:90%">

Label: The most permissive of the Tag Sets.

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 8.9pt (11.88px), font weight: normal). Expected contrast ratio of 4.5:1

Element 2 HHS-0e3db11a

Element path: div.portlet_content > ul > li.image > div.desc

Snippet:

<div class="desc" style="font-size:90%">

Label: A moderately prescriptive Tag Set.

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 8.9pt (11.88px), font weight: normal). Expected contrast ratio of 4.5:1

Element 3 HHS-0e3db11a

Element path: div.portlet_content > ul > li.image > div.desc

Snippet:

<div class="desc" style="font-size:90%">

Label: The most prescriptive of the Tag Sets.

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.47 (foreground color: #777777, background color: #ffffff, font size: 8.9pt (11.88px), font weight: normal). Expected contrast ratio of 4.5:1
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-6fe8ce08

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~12 people potentially excluded (2.2% prevalence × 565 affected page loads) People with limited reach, strength, or stamina. Estimated ~33 people potentially excluded (5.8% prevalence × 565 affected page loads)

Affected elements (36):

Element 1 HHS-987f0681

Element path: div.subfooter > ul#getting_started > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/home/learn.shtml">

Label: NCBI Education

How to fix: Fix any of the following:

  • Target has insufficient size (78.3px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17.6px instead of at least 24px.

Element 2 HHS-987f0681

Element path: div.subfooter > ul#getting_started > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/books/NBK3831/">

Label: NCBI Help Manual

How to fix: Fix any of the following:

  • Target has insufficient size (91.1px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17.2px instead of at least 24px.

Element 3 HHS-987f0681

Element path: div.subfooter > ul#getting_started > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/books/NBK143764/">

Label: NCBI Handbook

How to fix: Fix any of the following:

  • Target has insufficient size (79.5px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17.2px instead of at least 24px.

Element 4 HHS-987f0681

Element path: div.subfooter > ul#getting_started > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/home/learn.shtml">

Label: Training & Tutorials

How to fix: Fix any of the following:

  • Target has insufficient size (94.4px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18.2px instead of at least 24px.

Element 5 HHS-1ef4e468

Element path: div.subfooter > ul#resources > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/guide/data-software/">

Label: Data & Software

How to fix: Fix any of the following:

  • Target has insufficient size (80.1px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.8px instead of at least 24px.

Element 6 HHS-1ef4e468

Element path: div.subfooter > ul#resources > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/guide/dna-rna/">

Label: DNA & RNA

How to fix: Fix any of the following:

  • Target has insufficient size (59.3px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.8px instead of at least 24px.

Element 7 HHS-1ef4e468

Element path: div.subfooter > ul#resources > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/guide/domains-structures/">

Label: Domains & Structures

How to fix: Fix any of the following:

  • Target has insufficient size (107px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16.2px instead of at least 24px.

Element 8 HHS-1ef4e468

Element path: div.subfooter > ul#resources > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/guide/genes-expression/">

Label: Genes & Expression

How to fix: Fix any of the following:

  • Target has insufficient size (100.3px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.6px instead of at least 24px.

Element 9 HHS-1ef4e468

Element path: div.subfooter > ul#resources > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/guide/genetics-medicine/">

Label: Genetics & Medicine

How to fix: Fix any of the following:

  • Target has insufficient size (100.9px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.6px instead of at least 24px.

Element 10 HHS-1ef4e468

Element path: div.subfooter > ul#resources > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/guide/genomes-maps/">

Label: Genomes & Maps

How to fix: Fix any of the following:

  • Target has insufficient size (88px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17.6px instead of at least 24px.

Element 11 HHS-1ef4e468

Element path: div.subfooter > ul#resources > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/guide/homology/">

Label: Homology

How to fix: Fix any of the following:

  • Target has insufficient size (49.5px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.8px instead of at least 24px.

Element 12 HHS-1ef4e468

Element path: div.subfooter > ul#resources > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/guide/literature/">

Label: Literature

How to fix: Fix any of the following:

  • Target has insufficient size (46.5px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.8px instead of at least 24px.

Element 13 HHS-1ef4e468

Element path: div.subfooter > ul#resources > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/guide/proteins/">

Label: Proteins

How to fix: Fix any of the following:

  • Target has insufficient size (40.4px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16px instead of at least 24px.

Element 14 HHS-1ef4e468

Element path: div.subfooter > ul#resources > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/guide/taxonomy/">

Label: Taxonomy

How to fix: Fix any of the following:

  • Target has insufficient size (50.1px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16.4px instead of at least 24px.

Element 15 HHS-1ef4e468

Element path: div.subfooter > ul#resources > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/guide/variation/">

Label: Variation

How to fix: Fix any of the following:

  • Target has insufficient size (42.6px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16.4px instead of at least 24px.

Element 16 HHS-c3a0446d

Element path: div.subfooter > ul#popular > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/pubmed/">

Label: PubMed

How to fix: Fix any of the following:

  • Target has insufficient size (41px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16.2px instead of at least 24px.

Element 17 HHS-c3a0446d

Element path: div.subfooter > ul#popular > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/books/">

Label: Bookshelf

How to fix: Fix any of the following:

  • Target has insufficient size (48.3px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16.2px instead of at least 24px.

Element 18 HHS-2d6ac821

Element path: div.subfooter > ul#popular > li > a.newdomain

Snippet:

<a href="https://blast.ncbi.nlm.nih.gov/Blast.cgi" class="newdomain">

Label: BLAST

How to fix: Fix any of the following:

  • Target has insufficient size (34.9px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 19.2px instead of at least 24px.

Element 19 HHS-c3a0446d

Element path: div.subfooter > ul#popular > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/nucleotide/">

Label: Nucleotide

How to fix: Fix any of the following:

  • Target has insufficient size (52px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16.8px instead of at least 24px.

Element 20 HHS-c3a0446d

Element path: div.subfooter > ul#popular > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/genome/">

Label: Genome

How to fix: Fix any of the following:

  • Target has insufficient size (42.2px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16.8px instead of at least 24px.

Element 21 HHS-c3a0446d

Element path: div.subfooter > ul#popular > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/snp/">

Label: SNP

How to fix: Fix any of the following:

  • Target has insufficient size (22.6px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.8px instead of at least 24px.

Element 22 HHS-c3a0446d

Element path: div.subfooter > ul#popular > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/gene/">

Label: Gene

How to fix: Fix any of the following:

  • Target has insufficient size (26.9px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.8px instead of at least 24px.

Element 23 HHS-c3a0446d

Element path: div.subfooter > ul#popular > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/protein/">

Label: Protein

How to fix: Fix any of the following:

  • Target has insufficient size (34.9px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16.4px instead of at least 24px.

Element 24 HHS-2d6ac821

Element path: div.subfooter > ul#popular > li > a.newdomain

Snippet:

<a href="https://pubchem.ncbi.nlm.nih.gov/" class="newdomain">

Label: PubChem

How to fix: Fix any of the following:

  • Target has insufficient size (48.9px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18px instead of at least 24px.

Element 25 HHS-deff62ec

Element path: div.subfooter > ul#featured > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/refseq/">

Label: Reference Sequences

How to fix: Fix any of the following:

  • Target has insufficient size (108.9px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 21.6px instead of at least 24px.

Element 26 HHS-deff62ec

Element path: div.subfooter > ul#featured > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/geo/">

Label: Gene Expression Omnibus

How to fix: Fix any of the following:

  • Target has insufficient size (131.5px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 21.6px instead of at least 24px.

Element 27 HHS-deff62ec

Element path: div.subfooter > ul#featured > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/genome/guide/human/">

Label: Human Genome

How to fix: Fix any of the following:

  • Target has insufficient size (80.7px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.6px instead of at least 24px.

Element 28 HHS-deff62ec

Element path: div.subfooter > ul#featured > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/genome/guide/mouse/">

Label: Mouse Genome

How to fix: Fix any of the following:

  • Target has insufficient size (78.3px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.6px instead of at least 24px.

Element 29 HHS-deff62ec

Element path: div.subfooter > ul#featured > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/genomes/FLU/">

Label: Influenza Virus

How to fix: Fix any of the following:

  • Target has insufficient size (72.6px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.6px instead of at least 24px.

Element 30 HHS-deff62ec

Element path: div.subfooter > ul#featured > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/tools/primer-blast/">

Label: Primer-BLAST

How to fix: Fix any of the following:

  • Target has insufficient size (70.9px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.6px instead of at least 24px.

Element 31 HHS-8b7f6155

Element path: div.subfooter > ul#info > li > a

Snippet:

<a href="//www.ncbi.nlm.nih.gov/research/">

Label: Research at NCBI

How to fix: Fix any of the following:

  • Target has insufficient size (88.7px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.8px instead of at least 24px.

Element 32 HHS-8b7f6155

Element path: div.subfooter > ul#info > li > a

Snippet:

<a href="https://ncbiinsights.ncbi.nlm.nih.gov">

Label: NCBI News & Blog

How to fix: Fix any of the following:

  • Target has insufficient size (92.3px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 15.8px instead of at least 24px.

Element 33 HHS-8b7f6155

Element path: div.subfooter > ul#info > li > a

Snippet:

<a href="https://ftp.ncbi.nlm.nih.gov/">

Label: NCBI FTP Site

How to fix: Fix any of the following:

  • Target has insufficient size (71.9px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20.6px instead of at least 24px.

Element 34 HHS-a0d7d797

Element path: div.subfooter > ul#info > li > a.external

Snippet:

<a class="external" href="https://www.facebook.com/ncbi.nlm">

Label: NCBI on Facebook

How to fix: Fix any of the following:

  • Target has insufficient size (92.9px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18.8px instead of at least 24px.

Element 35 HHS-a0d7d797

Element path: div.subfooter > ul#info > li > a.external

Snippet:

<a class="external" href="https://twitter.com/ncbi">

Label: NCBI on Twitter

How to fix: Fix any of the following:

  • Target has insufficient size (76.8px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17px instead of at least 24px.

Element 36 HHS-a0d7d797

Element path: div.subfooter > ul#info > li > a.external

Snippet:

<a class="external" href="https://www.youtube.com/ncbinlm">

Label: NCBI on YouTube

How to fix: Fix any of the following:

  • Target has insufficient size (87.7px by 12px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17px instead of at least 24px.
Document does not have a main landmark. (rule: landmark-one-main) HHS-7914bb92

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~6 people potentially excluded (1.0% prevalence × 565 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2 people potentially excluded (0.3% prevalence × 565 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~12 people potentially excluded (2.2% prevalence × 565 affected page loads)

Affected elements (1):

Element 1 HHS-f836b7b5

Element path: html

Snippet:

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://selectagents.gov

Lighthouse Accessibility Score: 91

Axe findings: 2

Buttons do not have an accessible name (rule: button-name) HHS-d08a56e2

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~5 people potentially excluded (1.0% prevalence × 538 affected page loads) People who are deaf and cannot hear audio content. Estimated ~2 people potentially excluded (0.3% prevalence × 538 affected page loads)

Affected elements (1):

Element 1 HHS-cf8a43e1

Element path: div.col-md-3 > div.headerSearch > form > button.btn

Snippet:

<button class="btn btn-primary dropdown-toggle no-toggle search-button ssi d-xl-none" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">

How to fix: Fix any of the following:

  • Element does not have inner text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • Element's default semantics were not overridden with role="none" or role="presentation"
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-8ed18044

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~12 people potentially excluded (2.2% prevalence × 538 affected page loads) People with limited reach, strength, or stamina. Estimated ~31 people potentially excluded (5.8% prevalence × 538 affected page loads)

Affected elements (2):

Element 1 HHS-98bba862

Element path: div.row > div.col-md-4 > p.mt-1 > a

Snippet:

<a href="https://www.hhs.gov/vulnerability-disclosure-policy/index.html">

Label: HHS Vulnerability Disclosure Policy

How to fix: Fix any of the following:

  • Target has insufficient size (210.2px by 18px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 21px instead of at least 24px.

Element 2 HHS-98bba862

Element path: div.row > div.col-md-4 > p.mt-1 > a

Snippet:

<a href="https://hhs.responsibledisclosure.com/hc/en-us">

Label: HHS Responsible Disclosure

How to fix: Fix any of the following:

  • Target has insufficient size (169.4px by 18px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 21px instead of at least 24px.

Download full axe findings JSON | Download full axe findings CSV

https://meshb-prev.nlm.nih.gov

Lighthouse Accessibility Score: 88

Axe findings: 3

`[aria-*]` attributes do not match their roles (rule: aria-allowed-attr) HHS-751c8b36

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Disabilities affected: People who are blind or have no functional vision. Estimated ~5 people potentially excluded (1.0% prevalence × 460 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 460 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~10 people potentially excluded (2.2% prevalence × 460 affected page loads)

Affected elements (1):

Element 1 HHS-d8692be9

Element path: div > nav.navbar > div.container-fluid > div#bs-example-navbar-collapse-1

Snippet:

<div id="bs-example-navbar-collapse-1" class="collapse navbar-collapse" aria-expanded="false">

Label: Search Tree View MeSH on Demand MeSH 2026 About Suggestions Contact Us

How to fix: Fix all of the following:

  • ARIA attribute is not allowed: aria-expanded="false"
Background and foreground colors do not have a sufficient contrast ratio. (rule: color-contrast) HHS-cd5211f9

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~11 people potentially excluded (2.4% prevalence × 460 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~20 people potentially excluded (4.3% prevalence × 460 affected page loads)

Affected elements (7):

Element 1 HHS-111f5413

Element path: div#bs-example-navbar-collapse-1 > ul.nav > li > a#mainSearchButton

Snippet:

<a href="/" id="mainSearchButton">

Label: Search

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.21 (foreground color: #777777, background color: #f8f8f8, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1

Element 2 HHS-56018ef1

Element path: div#bs-example-navbar-collapse-1 > ul.nav > li > a

Snippet:

<a href="/treeView">

Label: Tree View

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.21 (foreground color: #777777, background color: #f8f8f8, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1

Element 3 HHS-56018ef1

Element path: div#bs-example-navbar-collapse-1 > ul.nav > li > a

Snippet:

<a href="/MeSHonDemand">

Label: MeSH on Demand

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.21 (foreground color: #777777, background color: #f8f8f8, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1

Element 4 HHS-56018ef1

Element path: div#bs-example-navbar-collapse-1 > ul.nav > li > a

Snippet:

<a href="https://meshb.nlm.nih.gov/" target="_blank">

Label: MeSH 2026

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.21 (foreground color: #777777, background color: #f8f8f8, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1

Element 5 HHS-56018ef1

Element path: div#bs-example-navbar-collapse-1 > ul.nav > li > a

Snippet:

<a href="https://www.nlm.nih.gov/mesh/mbinfo.html" target="_blank">

Label: About

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.21 (foreground color: #777777, background color: #f8f8f8, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1

Element 6 HHS-56018ef1

Element path: div#bs-example-navbar-collapse-1 > ul.nav > li > a

Snippet:

<a href="https://www.nlm.nih.gov/mesh/meshsugg.html" target="_blank">

Label: Suggestions

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.21 (foreground color: #777777, background color: #f8f8f8, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1

Element 7 HHS-56018ef1

Element path: div#bs-example-navbar-collapse-1 > ul.nav > li > a

Snippet:

<a href="https://support.nlm.nih.gov/support/create-case/" target="_blank">

Label: Contact Us

How to fix: Fix any of the following:

  • Element has insufficient color contrast of 4.21 (foreground color: #777777, background color: #f8f8f8, font size: 10.5pt (14px), font weight: normal). Expected contrast ratio of 4.5:1
Document does not have a main landmark. (rule: landmark-one-main) HHS-da21e9c4

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~5 people potentially excluded (1.0% prevalence × 460 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 460 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~10 people potentially excluded (2.2% prevalence × 460 affected page loads)

Affected elements (1):

Element 1 HHS-8f9f4140

Element path: html

Snippet:

<html lang="en">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://nida.nih.gov

Lighthouse Accessibility Score: 98

Axe findings: 1

Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-7415d252

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~5 people potentially excluded (1.0% prevalence × 454 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 454 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~10 people potentially excluded (2.2% prevalence × 454 affected page loads)

Affected elements (1):

Element 1 HHS-3f743024

Element path: div > div.block-card--inset > div.block-card-text > h3.card-heading

Snippet:

<h3 class="card-heading">

Label: NIH researchers discover pain-relieving drug with minimal addictive properties

How to fix: Fix any of the following:

  • Heading order invalid

Download full axe findings JSON | Download full axe findings CSV

https://millionhearts.hhs.gov

Lighthouse Accessibility Score: 93

Axe findings: 2

Links rely on color to be distinguishable. (rule: link-in-text-block) HHS-ff96c9bd

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~10 people potentially excluded (2.4% prevalence × 434 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~19 people potentially excluded (4.3% prevalence × 434 affected page loads)

Affected elements (1):

Element 1 HHS-4c21405a

Element path: div.col-md-12 > div.cdc-textblock > p > a

Snippet:

<a href="/about-million-hearts/index.html">

Label: Learn more about the initiative

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 1.07:1 with the surrounding text. (Minimum contrast is 3:1, link text: #860037, surrounding text: #464646)
  • The link has no styling (such as underline) to distinguish it from the surrounding text
Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`). (rule: list) HHS-fec8d06b

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 434 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 434 affected page loads)

Affected elements (1):

Element 1 HHS-4142b4b2

Element path: div.footer-wrapper > div.container > div.row > ul.footer-links

Snippet:

<ul class="footer-links text-center">

Label: Accessibility Viewers & Players Privacy Policy Disclaimers Vulnerability Disclo…

How to fix: Fix all of the following:

  • List element has direct children that are not allowed: ul

Download full axe findings JSON | Download full axe findings CSV

https://animaldrugsatfda.fda.gov

Lighthouse Accessibility Score: 95

Axe findings: 2

Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-4d34cc07

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~9 people potentially excluded (2.2% prevalence × 431 affected page loads) People with limited reach, strength, or stamina. Estimated ~25 people potentially excluded (5.8% prevalence × 431 affected page loads)

Affected elements (1):

Element 1 HHS-4481e13b

Element path: div.row > div.col-sm-5 > span.control-label > a

Snippet:

<a href="" ng-show="!showAdvanced" ng-click="showAdvanced=!showAdvanced">

Label: >>

How to fix: Fix any of the following:

  • Target has insufficient size (16.7px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16.6px instead of at least 24px.
Document does not have a main landmark. (rule: landmark-one-main) HHS-5eb9127e

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 431 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 431 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~9 people potentially excluded (2.2% prevalence × 431 affected page loads)

Affected elements (1):

Element 1 HHS-907501f5

Element path: html#ng-app

Snippet:

<html lang="en" ng-app="myApp" class="ng-scope" id="ng-app" style="position: relative; background: transparent;">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://nationaldppcsc.cdc.gov

Lighthouse Accessibility Score: 97

Axe findings: 1

Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-1f288107

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~9 people potentially excluded (2.2% prevalence × 410 affected page loads) People with limited reach, strength, or stamina. Estimated ~24 people potentially excluded (5.8% prevalence × 410 affected page loads)

Affected elements (5):

Element 1 HHS-8cc0e337

Element path: div.col-md-3 > ul > li > a

Snippet:

<a href="https://jobs.cdc.gov" data-aura-rendered-by="357:0">

Label: Jobs

How to fix: Fix any of the following:

  • Target has insufficient size (27.5px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 22px instead of at least 24px.

Element 2 HHS-8cc0e337

Element path: div.col-md-3 > ul > li > a

Snippet:

<a href="https://www.cdc.gov/funding" data-aura-rendered-by="360:0">

Label: Funding

How to fix: Fix any of the following:

  • Target has insufficient size (47px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17.8px instead of at least 24px.

Element 3 HHS-8cc0e337

Element path: div.col-md-3 > ul > li > a

Snippet:

<a href="https://www.cdc.gov/Other/policies.html" data-aura-rendered-by="363:0">

Label: Policies

How to fix: Fix any of the following:

  • Target has insufficient size (44.8px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17.8px instead of at least 24px.

Element 4 HHS-8cc0e337

Element path: div.col-md-3 > ul > li > a

Snippet:

<a href="https://www.cdc.gov/Other/policies.html" data-aura-rendered-by="371:0">

Label: Privacy

How to fix: Fix any of the following:

  • Target has insufficient size (42.6px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 19.6px instead of at least 24px.

Element 5 HHS-8cc0e337

Element path: div.col-md-3 > ul > li > a

Snippet:

<a href="https://www.cdc.gov/od/foia" data-aura-rendered-by="374:0">

Label: FOIA

How to fix: Fix any of the following:

  • Target has insufficient size (30.3px by 15px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 19.6px instead of at least 24px.

Download full axe findings JSON | Download full axe findings CSV

https://ncsacw.acf.gov

Lighthouse Accessibility Score: 94

Axe findings: 3

Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-5c55c996

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 383 affected page loads) People with limited reach, strength, or stamina. Estimated ~22 people potentially excluded (5.8% prevalence × 383 affected page loads)

Affected elements (5):

Element 1 HHS-c7e9ec47

Element path: ul.grid-row > li.grid-col-auto > span.usa-footer__primary-link > a

Snippet:

<a href="https://www.acf.hhs.gov/disclaimers" target="_blank" rel="noreferrer" aria-label="View disclaimers page in a new window">

Label: View disclaimers page in a new window

How to fix: Fix any of the following:

  • Target has insufficient size (17px by 21px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17px instead of at least 24px.

Element 2 HHS-dbf6de9c

Element path: section.usa-footer__primary-content > ul.usa-list > li.usa-footer__secondary-link > a

Snippet:

<a href="https://www.acf.hhs.gov/disclaimers" target="_blank" rel="noreferrer" aria-label="View disclaimers page in a new window">

Label: View disclaimers page in a new window

How to fix: Fix any of the following:

  • Target has insufficient size (17px by 21px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17px instead of at least 24px.

Element 3 HHS-dbf6de9c

Element path: section.usa-footer__primary-content > ul.usa-list > li.usa-footer__secondary-link > a

Snippet:

<a href="https://www.acf.hhs.gov/disclaimers" target="_blank" rel="noreferrer" aria-label="View disclaimers page in a new window">

Label: View disclaimers page in a new window

How to fix: Fix any of the following:

  • Target has insufficient size (17px by 21px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17px instead of at least 24px.

Element 4 HHS-dbf6de9c

Element path: section.usa-footer__primary-content > ul.usa-list > li.usa-footer__secondary-link > a

Snippet:

<a href="https://www.acf.hhs.gov/disclaimers" target="_blank" rel="noreferrer" aria-label="View disclaimers page in a new window">

Label: View disclaimers page in a new window

How to fix: Fix any of the following:

  • Target has insufficient size (17px by 21px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17px instead of at least 24px.

Element 5 HHS-dbf6de9c

Element path: section.usa-footer__primary-content > ul.usa-list > li.usa-footer__secondary-link > a

Snippet:

<a href="https://www.acf.hhs.gov/disclaimers" target="_blank" rel="noreferrer" aria-label="View disclaimers page in a new window">

Label: View disclaimers page in a new window

How to fix: Fix any of the following:

  • Target has insufficient size (17px by 21px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 17px instead of at least 24px.
Document does not have a main landmark. (rule: landmark-one-main) HHS-ec025ddf

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 383 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 383 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 383 affected page loads)

Affected elements (1):

Element 1 HHS-180d2078

Element path: html

Snippet:

<html lang="en" data-react-helmet="lang">

How to fix: Fix all of the following:

  • Document does not have a main landmark
Elements with visible text labels do not have matching accessible names. (rule: label-content-name-mismatch) HHS-44007c95

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 383 affected page loads) People with low vision who need magnification or high contrast. Estimated ~9 people potentially excluded (2.4% prevalence × 383 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 383 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 383 affected page loads)

Affected elements (3):

Element 1 HHS-8bcf3bbc

Element path: div.grid-container > div.grid-row > div.Hero__HeroContent-sc-1df35lu-1 > a.usa-button

Snippet:

<a class="usa-button usa-button--secondary  " aria-label="Open POSC Implementation Tool page" href="/topics/capta-plans-of-safe-care/posc-implementation-tool/">

Label: View Resource

How to fix: Fix any of the following:

  • Text inside the element is not included in the accessible name

Element 2 HHS-b8008bf6

Element path: div.grid-container > div.grid-row > div.tablet-lg:grid-col-9 > a

Snippet:

<a href="https://ncsacw.acf.gov" aria-label="National Center on Substance Abuse and Child Welfare">

Label: https://ncsacw.acf.gov

How to fix: Fix any of the following:

  • Text inside the element is not included in the accessible name

Element 3 HHS-de95d74a

Element path: div.grid-row > div.tablet-lg:grid-col-9 > p > a

Snippet:

<a href="https://www.acf.hhs.gov" target="_blank" rel="noreferrer" aria-label="Administration for Children &amp; Families, open in a new window">

Label: Administration for Children and Families

How to fix: Fix any of the following:

  • Text inside the element is not included in the accessible name

Download full axe findings JSON | Download full axe findings CSV

https://labels.fda.gov

Lighthouse Accessibility Score: 54

Axe findings: 9

`<html>` element does not have a `[lang]` attribute (rule: html-has-lang) HHS-2e5ce04d

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 379 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 379 affected page loads) People with cognitive, learning, or language differences. Estimated ~18 people potentially excluded (4.7% prevalence × 379 affected page loads)

Affected elements (1):

Element 1 HHS-699264ce

Element path: html

Snippet:

<html xmlns="http://www.w3.org/1999/xhtml">

How to fix: Fix any of the following:

  • The <html> element does not have a lang attribute
Form elements do not have associated labels (rule: label) HHS-00bfc9dd

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 379 affected page loads) People with low vision who need magnification or high contrast. Estimated ~9 people potentially excluded (2.4% prevalence × 379 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 379 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 379 affected page loads)

Affected elements (1):

Element 1 HHS-d778bd0c

Element path: div#fda-rightmast > div#search-form > form#searchbox > input#search

Snippet:

<input id="search" name="q" tabindex="2" type="text">

How to fix: Fix any of the following:

  • Element does not have an implicit (wrapped) <label>
  • Element does not have an explicit <label>
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
  • Element has no placeholder attribute
  • Element's default semantics were not overridden with role="none" or role="presentation"
Links rely on color to be distinguishable. (rule: link-in-text-block) HHS-da3934e8

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Disabilities affected: People with low vision who need magnification or high contrast. Estimated ~9 people potentially excluded (2.4% prevalence × 379 affected page loads) People who cannot distinguish certain colors (color blindness). Estimated ~16 people potentially excluded (4.3% prevalence × 379 affected page loads)

Affected elements (7):

Element 1 HHS-ed164c6e

Element path: div#content > div.box_body > p > a

Snippet:

<a href="http://dailymed.nlm.nih.gov/dailymed/about.cfm">

Label: DailyMed

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 1.2:1 with the surrounding text. (Minimum contrast is 3:1, link text: #0f2a8c, surrounding text: #484138)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 2 HHS-420b3a69

Element path: div#wrapper > div#content > div.box_body > a

Snippet:

<a href="http://dailymed.nlm.nih.gov/dailymed/downloadLabels.cfm">

Label: National Library of Medicine’s Download Labels site

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 1.2:1 with the surrounding text. (Minimum contrast is 3:1, link text: #0f2a8c, surrounding text: #484138)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 3 HHS-70a55fb1

Element path: div.box_body > ul > li > a

Snippet:

<a href="http://www.fda.gov/AnimalVeterinary/Products/default.htm">

Label: Animal and Veterinary Products

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 1.2:1 with the surrounding text. (Minimum contrast is 3:1, link text: #0f2a8c, surrounding text: #484138)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 4 HHS-70a55fb1

Element path: div.box_body > ul > li > a

Snippet:

<a href="http://www.accessdata.fda.gov/scripts/cder/drugsatfda/index.cfm">

Label: Drugs @ FDA

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 1.2:1 with the surrounding text. (Minimum contrast is 3:1, link text: #0f2a8c, surrounding text: #484138)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 5 HHS-70a55fb1

Element path: div.box_body > ul > li > a

Snippet:

<a href="http://www.fda.gov/BiologicsBloodVaccines/ucm121134.htm">

Label: Biologics Products and Establishments

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 1.2:1 with the surrounding text. (Minimum contrast is 3:1, link text: #0f2a8c, surrounding text: #484138)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 6 HHS-70a55fb1

Element path: div.box_body > ul > li > a

Snippet:

<a href="http://www.fda.gov/AboutFDA/CentersOffices/CDER/ucm093452.htm">

Label: Office of Nonprescription Products

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 1.2:1 with the surrounding text. (Minimum contrast is 3:1, link text: #0f2a8c, surrounding text: #484138)
  • The link has no styling (such as underline) to distinguish it from the surrounding text

Element 7 HHS-ed164c6e

Element path: div#content > div.box_body > p > a

Snippet:

<a href="mailto:spl@fda.hhs.gov">

Label: spl@fda.hhs.gov

How to fix: Fix any of the following:

  • The link has insufficient color contrast of 1.2:1 with the surrounding text. (Minimum contrast is 3:1, link text: #0f2a8c, surrounding text: #484138)
  • The link has no styling (such as underline) to distinguish it from the surrounding text
Links do not have a discernible name (rule: link-name) HHS-ae586f1f

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 379 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 379 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 379 affected page loads)

Affected elements (1):

Element 1 HHS-aa38bf58

Element path: div#content > div.box_body > p > a

Snippet:

<a href="http://www.fda.gov/Drugs/InformationOnDrugs/ucm142438.htm">

How to fix: Fix all of the following:

  • Element is in tab order and does not have accessible text
  • Fix any of the following:
  • Element does not have text that is visible to screen readers
  • aria-label attribute does not exist or is empty
  • aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
  • Element has no title attribute
Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`). (rule: list) HHS-5fe293e1

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 379 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 379 affected page loads)

Affected elements (1):

Element 1 HHS-b396750f

Element path: div#wrapper > div#footer > div.hmenu > ul

Snippet:

<ul>

Label: Combination Products Advisory Committees Science & Research Regulatory Informat…

How to fix: Fix all of the following:

  • List element has direct children that are not allowed: br
Skip links are not focusable. (rule: skip-link) HHS-c1e486a4

Including a skip link can help users skip to the main content to save time. Learn more about skip links.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 379 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 379 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 379 affected page loads)

Affected elements (1):

Element 1 HHS-11e6b0a2

Element path: body > div.quicklinks > a.quicklinks

Snippet:

<a href="#section-menu" class="quicklinks" tabindex="1">

Label: Skip to Section Content Menu

How to fix: Fix any of the following:

  • No skip link target
Some elements have a `[tabindex]` value greater than 0 (rule: tabindex) HHS-9ad6d2f4

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 379 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 379 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 379 affected page loads)

Affected elements (7):

Element 1 HHS-89b39145

Element path: body > div.quicklinks > a.quicklinks

Snippet:

<a href="#main" accesskey="2" class="quicklinks" tabindex="1">

Label: Quick Links: Skip to main page content

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 2 HHS-89b39145

Element path: body > div.quicklinks > a.quicklinks

Snippet:

<a href="#search" class="quicklinks" tabindex="1">

Label: Skip to Search

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 3 HHS-89b39145

Element path: body > div.quicklinks > a.quicklinks

Snippet:

<a href="#fda-topmenu" class="quicklinks" tabindex="1">

Label: Skip to Topics Menu

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 4 HHS-89b39145

Element path: body > div.quicklinks > a.quicklinks

Snippet:

<a href="#section-menu" class="quicklinks" tabindex="1">

Label: Skip to Section Content Menu

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 5 HHS-89b39145

Element path: body > div.quicklinks > a.quicklinks

Snippet:

<a href="#footer" class="quicklinks" tabindex="1">

Label: Skip to Common Links

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 6 HHS-04052ad6

Element path: div#fda-rightmast > div#search-form > form#searchbox > input#search

Snippet:

<input id="search" name="q" tabindex="2" type="text">

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0

Element 7 HHS-f6650aa6

Element path: div#fda-rightmast > div#search-form > form#searchbox > input#go_button

Snippet:

<input id="go_button" src="/scripts/includes/images/img_fdagov_Go_button.gif" alt="Search button" tabindex="3" type="image" align="middle">

Label: Search button

How to fix: Fix any of the following:

  • Element has a tabindex greater than 0
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-7d66dd2a

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 379 affected page loads) People with limited reach, strength, or stamina. Estimated ~22 people potentially excluded (5.8% prevalence × 379 affected page loads)

Affected elements (15):

Element 1 HHS-868688ec

Element path: div.hmenu > ul > li > a

Snippet:

<a href="http://www.fda.gov/MedicalDevices/default.htm">

Label: Medical Devices

How to fix: Fix any of the following:

  • Target has insufficient size (90.3px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 22.8px instead of at least 24px.

Element 2 HHS-edd367cc

Element path: div.hmenu > ul > li#first > a

Snippet:

<a href="http://www.fda.gov/CombinationProducts/default.htm">

Label: Combination Products

How to fix: Fix any of the following:

  • Target has insufficient size (122.1px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 14px instead of at least 24px.

Element 3 HHS-868688ec

Element path: div.hmenu > ul > li > a

Snippet:

<a href="http://www.fda.gov/AdvisoryCommittees/default.htm">

Label: Advisory Committees

How to fix: Fix any of the following:

  • Target has insufficient size (117.2px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 4.2px instead of at least 24px.

Element 4 HHS-868688ec

Element path: div.hmenu > ul > li > a

Snippet:

<a href="http://www.fda.gov/ScienceResearch/default.htm">

Label: Science & Research

How to fix: Fix any of the following:

  • Target has insufficient size (112.4px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 14px instead of at least 24px.

Element 5 HHS-868688ec

Element path: div.hmenu > ul > li > a

Snippet:

<a href="http://www.fda.gov/RegulatoryInformation/default.htm">

Label: Regulatory Information

How to fix: Fix any of the following:

  • Target has insufficient size (125.5px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 14px instead of at least 24px.

Element 6 HHS-868688ec

Element path: div.hmenu > ul > li > a

Snippet:

<a href="http://www.fda.gov/Safety/default.htm">

Label: Safety

How to fix: Fix any of the following:

  • Target has insufficient size (35.2px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 14px instead of at least 24px.

Element 7 HHS-868688ec

Element path: div.hmenu > ul > li > a

Snippet:

<a href="http://www.fda.gov/EmergencyPreparedness/default.htm">

Label: Emergency Preparedness

How to fix: Fix any of the following:

  • Target has insufficient size (143.4px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 18.8px instead of at least 24px.

Element 8 HHS-868688ec

Element path: div.hmenu > ul > li > a

Snippet:

<a href="http://www.fda.gov/InternationalPrograms/default.htm">

Label: International Programs

How to fix: Fix any of the following:

  • Target has insufficient size (125.5px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 14px instead of at least 24px.

Element 9 HHS-edd367cc

Element path: div.hmenu > ul > li#first > a

Snippet:

<a href="http://www.fda.gov/NewsEvents/default.htm">

Label: News & Events

How to fix: Fix any of the following:

  • Target has insufficient size (84.1px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 14px instead of at least 24px.

Element 10 HHS-868688ec

Element path: div.hmenu > ul > li > a

Snippet:

<a href="http://www.fda.gov/Training/default.htm">

Label: Training and Continuing Education

How to fix: Fix any of the following:

  • Target has insufficient size (189.9px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 4.2px instead of at least 24px.

Element 11 HHS-868688ec

Element path: div.hmenu > ul > li > a

Snippet:

<a href="http://www.fda.gov/ICECI/default.htm">

Label: Inspections/Compliance

How to fix: Fix any of the following:

  • Target has insufficient size (131.7px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 14px instead of at least 24px.

Element 12 HHS-868688ec

Element path: div.hmenu > ul > li > a

Snippet:

<a href="http://www.fda.gov/ForFederalStateandLocalOfficials/default.htm">

Label: State & Local Officials

How to fix: Fix any of the following:

  • Target has insufficient size (121.1px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 14px instead of at least 24px.

Element 13 HHS-868688ec

Element path: div.hmenu > ul > li > a

Snippet:

<a href="http://www.fda.gov/ForConsumers/default.htm">

Label: Consumers

How to fix: Fix any of the following:

  • Target has insufficient size (63.4px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 14px instead of at least 24px.

Element 14 HHS-868688ec

Element path: div.hmenu > ul > li > a

Snippet:

<a href="http://www.fda.gov/ForIndustry/default.htm">

Label: Industry

How to fix: Fix any of the following:

  • Target has insufficient size (44.1px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 14px instead of at least 24px.

Element 15 HHS-868688ec

Element path: div.hmenu > ul > li > a

Snippet:

<a href="http://www.fda.gov/ForHealthProfessionals/default.htm">

Label: Health Professionals

How to fix: Fix any of the following:

  • Target has insufficient size (113.8px by 14px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 14px instead of at least 24px.
Document does not have a main landmark. (rule: landmark-one-main) HHS-075746c0

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 379 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 379 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 379 affected page loads)

Affected elements (1):

Element 1 HHS-011bcf87

Element path: html

Snippet:

<html xmlns="http://www.w3.org/1999/xhtml">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://classification.nlm.nih.gov

Lighthouse Accessibility Score: 94

Axe findings: 2

Skip links are not focusable. (rule: skip-link) HHS-f20356db

Including a skip link can help users skip to the main content to save time. Learn more about skip links.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 367 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 367 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 367 affected page loads)

Affected elements (2):

Element 1 HHS-3a3a3887

Element path: body > main > a.usa-skipnav

Snippet:

<a class="usa-skipnav" href="#main">

Label: Skip to main content

How to fix: Fix any of the following:

  • No skip link target

Element 2 HHS-e4330507

Element path: body > main > header.insertheader > a.usa-skipnav

Snippet:

<a class="usa-skipnav" href="#main-content">

Label: Skip to main content

How to fix: Fix any of the following:

  • No skip link target
Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-2ca17147

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 367 affected page loads) People with limited reach, strength, or stamina. Estimated ~21 people potentially excluded (5.8% prevalence × 367 affected page loads)

Affected elements (4):

Element 1 HHS-51dcbed4

Element path: div.row > div.col-md-3 > p > a.text-white

Snippet:

<a href="https://www.nih.gov/institutes-nih/nih-office-director/office-communicatio…" class="text-white">

Label: FOIA

How to fix: Fix any of the following:

  • Target has insufficient size (31.3px by 17px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23.4px instead of at least 24px.

Element 2 HHS-2f344da9

Element path: div.row > div.col-md-3 > p > a.supportLink

Snippet:

<a class="supportLink text-white" href="//support.nlm.nih.gov?from=">

Label: NLM Support Center

How to fix: Fix any of the following:

  • Target has insufficient size (130.7px by 17px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23.4px instead of at least 24px.

Element 3 HHS-51dcbed4

Element path: div.row > div.col-md-3 > p > a.text-white

Snippet:

<a href="https://www.nlm.nih.gov/accessibility.html" class="text-white">

Label: Accessibility

How to fix: Fix any of the following:

  • Target has insufficient size (80.5px by 17px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23.4px instead of at least 24px.

Element 4 HHS-51dcbed4

Element path: div.row > div.col-md-3 > p > a.text-white

Snippet:

<a href="https://www.nlm.nih.gov/careers/careers.html" class="text-white">

Label: Careers

How to fix: Fix any of the following:

  • Target has insufficient size (49.5px by 17px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 23.4px instead of at least 24px.

Download full axe findings JSON | Download full axe findings CSV

https://nfr.cdc.gov

Lighthouse Accessibility Score: 97

Axe findings: 1

Document does not have a main landmark. (rule: landmark-one-main) HHS-91492102

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 357 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 357 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 357 affected page loads)

Affected elements (1):

Element 1 HHS-c9714ee2

Element path: html.dj_webkit

Snippet:

<html class="dj_webkit dj_chrome dj_android dj_contentbox" lang="en-US">

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://rarediseases.info.nih.gov

Lighthouse Accessibility Score: 97

Axe findings: 3

Heading elements are not in a sequentially-descending order (rule: heading-order) HHS-43381c3b

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 352 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 352 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 352 affected page loads)

Affected elements (3):

Element 1 HHS-87f6dc98

Element path: div.contact-us-wrapper > div.container-xxxl > div.d-block > h3.text-blue

Snippet:

<h3 class="text-blue border-start border-blue border-4 ps-4 mb-3 hl-1 fw-bold">

Label: Connect with GARD

How to fix: Fix any of the following:

  • Heading order invalid

Element 2 HHS-d5701e1e

Element path: div.container-xxxl > div.d-block > div.text-center > h5.text-blue

Snippet:

<h5 class="text-blue mb-2 fw-bold fs-22">

Label: Phone

How to fix: Fix any of the following:

  • Heading order invalid

Element 3 HHS-d5701e1e

Element path: div.container-xxxl > div.d-block > div.text-center > h5.text-blue

Snippet:

<h5 class="text-blue mb-2 fs-22">

Label: Contact GARD

How to fix: Fix any of the following:

  • Heading order invalid
Document does not have a main landmark. (rule: landmark-one-main) HHS-e3f54529

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 352 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 352 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 352 affected page loads)

Affected elements (1):

Element 1 HHS-eeaeb99e

Element path: html

Snippet:

<html lang="en" data-critters-container="">

How to fix: Fix all of the following:

  • Document does not have a main landmark
Elements with visible text labels do not have matching accessible names. (rule: label-content-name-mismatch) HHS-2018065a

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Disabilities affected: People who are blind or have no functional vision. Estimated ~4 people potentially excluded (1.0% prevalence × 352 affected page loads) People with low vision who need magnification or high contrast. Estimated ~8 people potentially excluded (2.4% prevalence × 352 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 352 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~8 people potentially excluded (2.2% prevalence × 352 affected page loads)

Affected elements (1):

Element 1 HHS-c4585d57

Element path: div.d-block > div.text-center > h3.phone > a

Snippet:

<a role="button" aria-label="Click to Call" href="tel:8882052311">

Label: 1-888-205-2311

How to fix: Fix any of the following:

  • Text inside the element is not included in the accessible name

Download full axe findings JSON | Download full axe findings CSV

https://www.nihms.nih.gov

Lighthouse Accessibility Score: 96

Axe findings: 1

`[accesskey]` values are not unique (rule: accesskeys) HHS-13650a1a

Access keys let users quickly focus a part of the page. For proper navigation, each access key must be unique. Learn more about access keys.

Affected elements (2):

Element 1 HHS-642f7115

Element path: body > a#nws_header_accesskey_1

Snippet:

<a id="nws_header_accesskey_1" href="https://www.ncbi.nlm.nih.gov" class="usa-sr-only" accesskey="1" tabindex="-1">

Label: NCBI Homepage

How to fix: Fix all of the following:

  • Document has multiple elements with the same accesskey

Element 2 HHS-886444db

Element path: body > a#nws_header_accesskey_3

Snippet:

<a id="nws_header_accesskey_3" href="#maincontent" class="usa-sr-only" accesskey="3" tabindex="-1">

Label: Main Content

How to fix: Fix all of the following:

  • Document has multiple elements with the same accesskey

Download full axe findings JSON | Download full axe findings CSV

https://cde.nlm.nih.gov

Lighthouse Accessibility Score: 96

Axe findings: 1

Touch targets do not have sufficient size or spacing. (rule: target-size) HHS-850154e4

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Disabilities affected: People with limited hand, finger, or fine motor dexterity. Estimated ~7 people potentially excluded (2.2% prevalence × 315 affected page loads) People with limited reach, strength, or stamina. Estimated ~18 people potentially excluded (5.8% prevalence × 315 affected page loads)

Affected elements (7):

Element 1 HHS-6c5a66ed

Element path: footer > div.topSection > div > a

Snippet:

<a _ngcontent-ng-c2725819075="" href="https://www.nlm.nih.gov/socialmedia/index.html" target="_blank" rel="noopener noreferrer">

Label: Connect with NLM

How to fix: Fix any of the following:

  • Target has insufficient size (203.9px by 20px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 20px instead of at least 24px.

Element 2 HHS-6c5a66ed

Element path: footer > div.topSection > div > a

Snippet:

<a _ngcontent-ng-c2725819075="" href="https://www.nlm.nih.gov/web_policies.html" target="_blank" rel="noopener noreferrer">

Label: Web Policies

How to fix: Fix any of the following:

  • Target has insufficient size (203.9px by 20px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16px instead of at least 24px.

Element 3 HHS-6c5a66ed

Element path: footer > div.topSection > div > a

Snippet:

<a _ngcontent-ng-c2725819075="" href="https://www.nih.gov/institutes-nih/nih-office-director/office-communicatio…" target="_blank" rel="noopener noreferrer">

Label: FOIA

How to fix: Fix any of the following:

  • Target has insufficient size (203.9px by 20px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16px instead of at least 24px.

Element 4 HHS-6c5a66ed

Element path: footer > div.topSection > div > a

Snippet:

<a _ngcontent-ng-c2725819075="" href="https://www.hhs.gov/vulnerability-disclosure-policy/index.html" target="_blank" rel="noopener noreferrer">

Label: HHS Vulnerability Disclosure

How to fix: Fix any of the following:

  • Target has insufficient size (203.9px by 20px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16px instead of at least 24px.

Element 5 HHS-6c5a66ed

Element path: footer > div.topSection > div > a

Snippet:

<a _ngcontent-ng-c2725819075="" href="https://support.nlm.nih.gov/?from=https://cde.nlm.nih.gov/" target="_blank" rel="noopener noreferrer">

Label: NLM Support Center

How to fix: Fix any of the following:

  • Target has insufficient size (203.9px by 20px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16px instead of at least 24px.

Element 6 HHS-6c5a66ed

Element path: footer > div.topSection > div > a

Snippet:

<a _ngcontent-ng-c2725819075="" href="https://www.nlm.nih.gov/accessibility.html" target="_blank" rel="noopener noreferrer">

Label: Accessibility

How to fix: Fix any of the following:

  • Target has insufficient size (203.9px by 20px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16px instead of at least 24px.

Element 7 HHS-6c5a66ed

Element path: footer > div.topSection > div > a

Snippet:

<a _ngcontent-ng-c2725819075="" href="https://www.nlm.nih.gov/careers/careers.html" target="_blank" rel="noopener noreferrer">

Label: Careers

How to fix: Fix any of the following:

  • Target has insufficient size (203.9px by 20px, should be at least 24px by 24px)
  • Target has insufficient space to its closest neighbors. Safe clickable space has a diameter of 16px instead of at least 24px.

Download full axe findings JSON | Download full axe findings CSV

https://gudid.fda.gov

Lighthouse Accessibility Score: 87

Axe findings: 2

`<html>` element does not have a `[lang]` attribute (rule: html-has-lang) HHS-4382f890

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Disabilities affected: People who are blind or have no functional vision. Estimated ~3 people potentially excluded (1.0% prevalence × 311 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 311 affected page loads) People with cognitive, learning, or language differences. Estimated ~15 people potentially excluded (4.7% prevalence × 311 affected page loads)

Affected elements (1):

Element 1 HHS-f4f8ebae

Element path: html

Snippet:

<html>

How to fix: Fix any of the following:

  • The <html> element does not have a lang attribute
Document does not have a main landmark. (rule: landmark-one-main) HHS-829b1d1c

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Disabilities affected: People who are blind or have no functional vision. Estimated ~3 people potentially excluded (1.0% prevalence × 311 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 311 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~7 people potentially excluded (2.2% prevalence × 311 affected page loads)

Affected elements (1):

Element 1 HHS-64eff965

Element path: html

Snippet:

<html>

How to fix: Fix all of the following:

  • Document does not have a main landmark

Download full axe findings JSON | Download full axe findings CSV

https://nccd.cdc.gov

Lighthouse Accessibility Score: 95

Axe findings: 1

`[aria-*]` attributes do not match their roles (rule: aria-allowed-attr) HHS-843f6154

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Disabilities affected: People who are blind or have no functional vision. Estimated ~3 people potentially excluded (1.0% prevalence × 297 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 297 affected page loads) People with limited hand, finger, or fine motor dexterity. Estimated ~7 people potentially excluded (2.2% prevalence × 297 affected page loads)

Affected elements (1):

Element 1 HHS-bac02171

Element path: div.cdc-mobile-menu-body > div.cdc-mobile-audience > div.accordion-item > div.accordion-header

Snippet:

<div class="accordion-header" aria-expanded="false" aria-controls="mobilemenu-related">

Label: Related Topics

How to fix: Fix all of the following:

  • ARIA attribute is not allowed: aria-expanded="false"

Download full axe findings JSON | Download full axe findings CSV

https://yrbs-explorer.services.cdc.gov

Lighthouse Accessibility Score: 96

Axe findings: 1

`<html>` element does not have a `[lang]` attribute (rule: html-has-lang) HHS-f03f5f4a

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Disabilities affected: People who are blind or have no functional vision. Estimated ~3 people potentially excluded (1.0% prevalence × 281 affected page loads) People who are deaf and cannot hear audio content. Estimated ~1 people potentially excluded (0.3% prevalence × 281 affected page loads) People with cognitive, learning, or language differences. Estimated ~13 people potentially excluded (4.7% prevalence × 281 affected page loads)

Affected elements (1):

Element 1 HHS-0ed919f6

Element path: html

Snippet:

<html lang="">

How to fix: Fix any of the following:

  • The <html> element does not have a lang attribute

Download full axe findings JSON | Download full axe findings CSV