Glossary

Web Content Accessibility Guidelines, the international standard for accessible websites. Levels A, AA and AAA go from basic to strictest; AA is the common legal target.

The Americans with Disabilities Act and the European Accessibility Act, laws that expect websites to be accessible. PinMarks lets you scan against WCAG 2.1 (best for ADA) or WCAG 2.2 (best for the EAA).

The open-source engine PinMarks uses to detect accessibility problems.

Answer Engine Optimization: making your site easy for AI assistants and AI search to read and cite, for example by allowing AI crawlers and adding structured data.

A plain-text file at your site root that gives AI tools a short guide to your site.

Machine-readable markup that tells search engines and AI what a page is about, such as an Organization or FAQ.

The preferred address of a page, used to avoid duplicate-content problems.

Google's measures of loading speed, responsiveness and visual stability, including LCP.

A browser security setting that decides which scripts may load on your site. It may need to allow the PinMarks domain.

An automatic message PinMarks sends to a URL you choose when something happens, such as new feedback.

Model Context Protocol, a standard that lets AI assistants connect to tools and data such as your PinMarks feedback.

A secure sign-in method that lets an app access your account without you sharing your password. Used by ChatGPT, Claude.ai and Codex to connect to PinMarks.

A client or reviewer invited to a project without joining your team.