nih.gov: week 2026-W31
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Change this week
- New this week
- 0
- Fixed this week
- 0
- Regressed this week
- 0
Exclude URLs from this report
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Findings scoped to your excluded URLs, matching this view (counts use the same up-to-25-page sample).
Fix these first
| Issue | Severity | Pages | Who it affects | How to fix | Evidence |
|---|---|---|---|---|---|
| Links must be distinguishable without relying on color (WCAG 1.4.1) (rule↗) | Critical | 3144 | 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↗) | Serious | 3144 | — | 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↗) | Serious | 2318 | — | Use heading levels in order (h1 → h2 → h3) without skipping; structure, not size. | pages (CSV) |
| Target size is at least 44×44 CSS pixels (Enhanced) (WCAG 2.5.5) (rule↗) | Moderate | 1597 | — | See remediation guidance: https://alfa.siteimprove.com/rules/sia-r111 | pages (CSV) |
| aria attribute is permitted for element role (WCAG criterion undetermined) (rule↗) | Moderate | 1597 | — | Only use ARIA states/properties that are allowed on this element/role. | pages (CSV) |
| Scrolling content can be accessed by keyboard (WCAG criterion undetermined) (rule↗) | Moderate | 1597 | — | See remediation guidance: https://alfa.siteimprove.com/rules/sia-r57 | pages (CSV) |
| Text has enhanced contrast (WCAG 1.4.6) (rule↗) | Moderate | 1596 | — | 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 | 1596 | — | See remediation guidance: https://alfa.siteimprove.com/rules/sia-r73 | pages (CSV) |
Progress
| Week | Critical | Serious | Moderate | Minor |
|---|---|---|---|---|
| 2026-W25 | 1 | 2 | 10 | 1 |
| 2026-W26 | 1 | 1 | 7 | 0 |
| 2026-W27 | 1 | 2 | 0 | 0 |
| 2026-W28 | 1 | 1 | 0 | 0 |
| 2026-W29 | 4 | 7 | 21 | 3 |
| 2026-W30 | 4 | 7 | 21 | 4 |
| 2026-W31 | 4 | 7 | 23 | 4 |
This week at a glance 38 issue type(s)
- Median axe violations / page
- 8
- Pages with axe violations
- 3146 of 3146
- Median Alfa failures / page
- 92
- Pages with Alfa failures
- 1597 of 1597
- Unique pages audited
- 3146
- Lighthouse performance (median)
- 43/100 details
- Lighthouse SEO (median)
- 100/100
- Lighthouse best practices (median)
- 96/100
- Lighthouse agentic (median)
- 56/100
- Words per page (median)
- 732
- Reading ease (median)
- 44
- Reading grade (median)
- 12.4
- Misspellings
- 25+ distinct details
- Broken links
- 473 details
- Median page weight
- 1.4 MB -654 KB better
- Median requests per page
- 99
- Estimated energy per page (mean)
- 0.5258 Wh
Scan coverage this week (3333 pages · 3426 succeeded of 3664 attempted)
| Engine | Pages | Coverage |
|---|---|---|
| axe | 3146 | 94% |
| resources | 3146 | 94% |
| alfa | 1597 | 48% |
| standards | 1587 | 48% |
| plain-language | 1525 | 46% |
| security | 319 | 10% |
| lighthouse | 318 | 10% |
| deprecated-html | 314 | 9% |
| tech | 311 | 9% |
| sustainability | 306 | 9% |
Changes since 2026-W30 0 change(s)
axe-core
No rule-level changes.
Alfa
No rule-level changes.
Embedded & linked resources
New this week (13)
- https://www.nih.gov/sites/default/files/2026-07/20260724-CourtneyAklin_1.jpg
- https://www.whitehouse.gov/wp-content/uploads/2026/07/USG-Policy-for-Stopping-High-Risk-Life-Sciences-Research_July-2026.pdf
- https://www.nih.gov/sites/default/files/2025-01/20180329-red-blood-malaria.jpg
- http://mailto:RADxInfo@nih.gov/sites/default/files/2026-07/20260724-CourtneyAklin_1.jpg
- https://nih.gov/sites/default/files/2025-01/beta-amyloid-tau.jpg
- https://www.nih.gov/sites/default/files/2026-07/20260721-qa-heal.pdf
- https://nih.gov/sites/default/files/2025-01/20180411-molecular-diagnosis.jpg
- https://www.nih.gov/sites/default/files/2025-01/20180402-basilica.jpg
- https://www.nih.gov/sites/default/files/2025-04/heal-initiative.jpg
- https://nih.gov/sites/default/files/2025-04/20180412-dl-cell.jpg
- https://nih.gov/sites/default/files/2025-01/20180411-melorheostosis-of-the-leg.jpg
- https://nih.gov/sites/default/files/2025-01/20180413-beta-amyloid-brain-regions.jpg
- https://nih.gov/sites/default/files/2026-07/20260724-CourtneyAklin_1.jpg
| Type | Count |
|---|---|
| Images | 1476 |
| PDF documents | 1316 |
| Word/text documents | 686 |
| Spreadsheets | 681 |
| Embedded media players | 142 |
| Presentations | 5 |
| Video files | 1 |