How accessible is your website?
The Silktide Index answers it in public: accessibility scores for nearly 15,000 websites, every month.
Accessibility
Updated monthly
Scores for nearly 15,000 websites, ranked by category
- UK Councils 374 sitesmedian score91.6
- UK Universities 150 sitesmedian score82.2
- US Higher Education 1,764 sitesmedian score74.8
- Australian Councils 532 sitesmedian score73.4
- S&P 500 436 sitesmedian score66
- FORTUNE 500 358 sitesmedian score66.2
How accessible is the web?
Every month we run automated WCAG 2.2 checks on a sample of pages from each website. Each one gets a score out of 100 and its level A, AA, and AAA pass rates, and is ranked in its category, from UK councils to the S&P 500.
Explore accessibilityUsed the old Index?
Same monthly scores
Accessibility is still scored with V4 every month, and past months stay on every category and website page.
A newer score version
Switch to V5, our newer scoring engine, on any category or website page.
Your links still work
Bookmarks to old category and website pages open the same page here.
How we measure
About the IndexAccessibility
Every monthWe run automated WCAG 2.2 checks on a sample of pages from nearly 15,000 websites: councils, universities, government, and the world's largest companies. Each gets a score out of 100 and its level A, AA, and AAA pass rates. We test only what a computer can reliably check, so a score is a starting point, not the whole picture.
Improve your own website
The Index shows where you stand. Silktide's products test and measure a site you own.
- Silktide ToolbarAccessibilityFree (opens in a new tab)A Chrome and Edge extension that tests any page against over 200 accessibility checks, with step-by-step fixes
- GovernanceAccessibility (opens in a new tab)Tests your website for accessibility, content, user experience, and compliance, then turns the findings into work
- PresenceAI visibility (opens in a new tab)Measures how your brand shows up in AI answers and in search, and what to do next
- AnalyticsVisitors (opens in a new tab)Shows how people find and use your website, including visits that arrive from AI assistants
Connect the Index to your AI agent
Add one address to any MCP-compatible client, such as Claude Code, Cursor, or Codex, and your agent can query every dataset in the Index.
https://mcp.eu.silktide.com/indexcursor://anysphere.cursor-deeplink/mcp/install?name=silktide-index&config=eyJ1cmwiOiJodHRwczovL21jcC5ldS5zaWxrdGlkZS5jb20vaW5kZXgifQ%3D%3Dclaude mcp add --transport http silktide-index https://mcp.eu.silktide.com/indexcodex mcp add silktide-index --url https://mcp.eu.silktide.com/index{
"mcpServers": {
"silktide-index": {
"url": "https://mcp.eu.silktide.com/index"
}
}
}