Audit article update dates across the visible page, HTTP response headers, and structured data that describes the article to search engines. Align these signals with substantive content changes and review how the CMS or build process updates them.
한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.
Use when auditing content pages for freshness signals, setting up HTTP Last-Modified headers in a web server config, or ensuring Article JSON-LD dateModified is updated when CMS content changes.
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Google's Query Deserves Freshness (QDF) algorithm boosts recent or recently updated content for time-sensitive queries. Missing or stale freshness signals mean your updated content competes without the freshness advantage it deserves.
Last-Modified HTTP response header and include dateModified in Article JSON-LD on all content pagesdateModified only when content substantively changes — trivial edits should not alter the dateFor each article or blog page: (1) Check the HTTP response Last-Modified header — is it set and recent? (2) Check the JSON-LD for a dateModified property in ISO 8601 format. (3) Is a visible 'Last updated' date shown to users? (4) Is the dateModified in JSON-LD consistent with the visible date and the Last-Modified header?
Last-Modified headers based on the file modification time:
add_header Last-Modified $date_gmt;mod_headers is enabled; static files serve Last-Modified automatically.dateModified:
{ "@type": "Article", "dateModified": "2024-11-20T14:30:00Z" }
dateModified only when content is substantively changed (not on metadata-only saves).updatedAt field through to the JSON-LD and <time> elements.Google's freshness algorithm (QDF — Query Deserves Freshness) actively boosts recently published or updated content for searches where recency matters. If your dateModified is stale or absent, Google may not credit your content with the freshness it deserves, ranking older competitors above you even after you have updated the article.
Check that the Last-Modified response header is present on article pages. Verify Article JSON-LD includes dateModified in ISO 8601 format. Confirm that the build or deployment system updates dateModified only for content files that actually changed — not a blanket timestamp update on all pages during deploy.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
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Create and review custom 404 pages that help visitors recover from broken or moved links through search and navigation. Check the rendered page and HTTP response so missing content returns a proper 404 status.
한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.
Audit or create a dedicated About page that explains a website’s purpose and identifies its people or organization. Review the rendered output and supporting information, including expertise and contact details, to find gaps.
한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.
Review and add automated accessibility checks for components, pages, and continuous integration workflows. Use axe-based tools to detect structural and attribute issues, while identifying checks that still need keyboard or screen reader testing.
한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.
Review sign-in, registration, multi-factor authentication, and account recovery for accessibility barriers. Find blocked paste, difficult code entry, and inaccessible backup methods, then suggest authentication paths that support password managers, autofill, or device approval.
한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.
Review form errors, success messages, and live updates so screen reader users receive important notifications. Check the HTML delivered to the browser, announcement settings, display duration, and dismissal controls, then identify specific elements that need changes.
한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.
Review HTML tables so screen reader users can understand how headers and data relate. Check header markup, table descriptions, and merged cells, then identify specific fixes and ways to verify them.
한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.