Overview
Score how well any website is readable by AI agents like ChatGPT, Claude, Copilot, and Cursor.
a14y scores any web page — or an entire site — for how readable it is by AI agents. When ChatGPT, Claude, Copilot, or Cursor fetch the web on a user's behalf, most of what makes a page work for humans (layout chrome, interactive widgets, client-side routing) actively gets in the way. The a14y scorecard measures the signals that actually matter to an agent: whether your content is discoverable, parseable, and comprehensible. What it does Open the extension on any page and hit **Check this page** to run the scorecard against that single URL, or **Scan whole site** to crawl from the entry URL following same-origin links. In seconds you get a 0–100 score plus a per-check breakdown: which signals you're nailing, which ones agents can't find, and a link to the fix guidance for each failing check. Every audit runs entirely in your browser. No server, no account, no data collection — just the extension and the page you're auditing. What it measures - Discoverability — robots.txt, sitemap, llms.txt, canonical links, redirect chains, HTTP 200 hygiene. - Parsing — content-type headers, HTML lang attribute, meta description, OG tags, JSON-LD, Markdown alternate links, text ratio. - Comprehension — headings, code-language tags, semantic structure, and a growing set of content-shape checks. Each check is versioned in an open scorecard at a14y.dev — a pinned v0.2.0 today — so scores from different runs stay comparable over time. Who it's for - Docs teams shipping content that AI coding assistants retrieve and cite. - Marketing and product pages whose biggest source of referrals is about to be agents, not search. - Engineers debugging why their content shows up wrong in LLM answers. - Anyone who wants to run the same open-source audit a14y.dev runs from the CLI, but without leaving the browser. Privacy Every audit runs in your browser — the URLs you enter and the pages the crawler fetches stay on your machine. a14y collects anonymous usage data by default (audit started/completed events with bucketed score and duration; never URLs, page content, or per-check details) to help us improve the extension. You can turn it off in the extension's options. Full policy: https://a14y.dev/privacy/ Open source Spec, scorecard, and tools live at https://github.com/timothyjordan/a14y. The same scoring engine powers the `a14y` CLI on npm and this extension — same URL + same scorecard version = same score, every time.
Details
- Version0.5.8
- UpdatedMay 11, 2026
- Size155KiB
- LanguagesEnglish (United States)
- DeveloperWebsite
Email
agentreadability@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
a14y (Agent Readability) has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.
a14y (Agent Readability) handles the following:
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
