vital-scans open quality ledger

nih.gov: week 2026-W34

This is the 2026-W34 ISO-week report (3333 pages fetched, 21 unique pages audited by axe/Alfa). Generated 2026-08-21. Compared against 2026-W33 (3333 fetched). The dashboard headline uses a rolling last-7-days window; this page is the full ISO week. Machine-readable API: snapshot.json · findings.json.

Primary standards queue: 0 required finding type(s) (handling: report). Verification queue: 5 required finding type(s) (handling: review). Aspirational queue: 0 finding type(s). Advisory queue: 0 finding type(s). Unmapped review queue: 6 finding type(s).

Change this week

New this week
0
Fixed this week
0
Regressed this week
3

Fix these first

Highest-leverage issues, ranked by pages affected × severity × people reached. Fixing a shared component often clears many pages at once. Issue links go to the full bug detail on the Accessibility page.

Top 8 issues to prioritize this week.
IssueSeverityPagesWho it affectsHow to fixEvidence
Links must be distinguishable without relying on color (WCAG 1.4.1) (rule↗) Serious 21 Without color perception, Limited vision See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/link-in-text-block?application=axeAPI pages (CSV)
All page content should be contained by landmarks (WCAG criterion undetermined) (rule↗) Moderate 21 — Wrap all page content in landmarks (header, nav, main, footer) so users can navigate by region. pages (CSV)
Heading levels should only increase by one (WCAG criterion undetermined) (rule↗) Moderate 17 — Use heading levels in order (h1 → h2 → h3) without skipping; structure, not size. pages (CSV)
Text has enhanced contrast (WCAG 1.4.6) (rule↗) Moderate 11 — Increase text contrast to meet WCAG AAA (7:1). pages (CSV)
Text has minimum contrast ratio of 4.5:1 (WCAG 1.4.8) (rule↗) Moderate 11 — See remediation guidance: https://alfa.siteimprove.com/rules/sia-r73 pages (CSV)
Target size is at least 44×44 CSS pixels (Enhanced) (WCAG 2.5.5) (rule↗) Moderate 11 — See remediation guidance: https://alfa.siteimprove.com/rules/sia-r111 pages (CSV)
aria attribute is permitted for element role (WCAG criterion undetermined) (rule↗) Moderate 11 — Only use ARIA states/properties that are allowed on this element/role. pages (CSV)
Form field label is visible (WCAG criterion undetermined) (rule↗) Moderate 11 — See remediation guidance: https://alfa.siteimprove.com/rules/sia-r61 pages (CSV)

Progress

Open findings by severity over 10 weeks (lower is better)
Critical Serious Moderate Minor W25W29W34250
Open findings by severity, by week
WeekCriticalSeriousModerateMinor
2026-W2501121
2026-W260180
2026-W270120
2026-W280110
2026-W2936233
2026-W3036234
2026-W3136254
2026-W3236234
2026-W3302121
2026-W3412141

This week at a glance 18 issue type(s)

Median axe violations / page
10
Pages with axe violations
21 of 21
Median Alfa failures / page
91
Pages with Alfa failures
11 of 11
Unique pages audited
21
Lighthouse performance (median)
34/100 2 sampled details
Lighthouse SEO (median)
96/100
Lighthouse best practices (median)
77/100
Lighthouse agentic (median)
80/100
Words per page (median)
649 main content, nav excluded
Reading ease (median)
39.2 9 prose pages
Reading grade (median)
14.5
Misspellings
25+ distinct details
Broken links
10 details
Median page weight
63 KB no change
Median requests per page
7
Estimated energy per page (mean)
0.0253 Wh
Scan coverage this week (3333 pages · 23 succeeded of 3654 attempted)
Pages each engine ran on, per the configured weekly sampling rates.
EnginePagesCoverage
sustainability32810%
axe211%
resources211%
alfa110%
plain-language90%
standards80%
deprecated-html30%
tech20%
security20%
lighthouse20%

History & Trends → Severity, Lighthouse and other measures across 16 weeks.

Changes since 2026-W33 8 change(s)

axe-core

  • New: image-alt appeared this week.
  • heading-order shrank: 17 → 17 pages affected (rate: 74% → 81% of pages scanned).
  • landmark-unique shrank: 15 → 10 pages affected (rate: 65% → 48% of pages scanned).
  • empty-heading spread: 1 → 4 pages affected (rate: 4% → 19% of pages scanned).

Alfa

  • New: sia-r78 appeared this week.
  • New: sia-r64 appeared this week.
  • sia-r53 shrank: 12 → 8 pages affected (rate: 92% → 73% of pages scanned).
  • sia-r85 spread: 1 → 2 pages affected (rate: 8% → 18% of pages scanned).

Embedded & linked resources

Non-HTML resources this site links to or embeds — PDFs, Office documents, iframes, and media. The site owner is responsible for their accessibility too. Full inventory with first-seen dates: CSV.

New this week (1)

11 distinct resources, by type.
TypeCount
Images9
Embedded media players1
PDF documents1