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Check the accessibility of any web page with AccessLint, right in a side panel, with links to guides for every issue found. Rocket Validator A11y Panel opens a side panel beside the page you are on and checks it against 94 rules from AccessLint Core, running against the rendered DOM — after your JavaScript has run, not the source HTML. Every rule links to a Rocket Validator guide explaining how to fix it. • One scroll, worst first — Critical, Serious, Moderate and Minor, each headed by its count, with filter chips to narrow to one severity at a time. • It follows you — navigate or switch tabs and the panel re-checks on its own, keeping your filter, your open cards and your place in the list. • It says when it has fallen behind — infinite scroll or a view swapped in place makes the Re-check button pulse, and leaves the checking to you. • Four buttons under every failing element — HTML shows the markup the engine saw, Selector copies the CSS selector, Highlight rings the element on the page, and AI Prompt copies the whole issue ready to paste into a chat. • Every rule explains itself — the engine's own guidance in the panel, and the fuller Rocket Validator guide one click away. • Light and dark, following your Chrome theme. Your browsing stays yours. Nothing is collected: no analytics, no telemetry, and no page content ever leaves your browser. The checks run locally and the fonts ship inside the extension rather than being fetched from a font service. The only network requests are the ones you make by clicking a link. Free companion extension for Rocket Validator, which scans entire websites — thousands of pages in one go, with three engines over every page: AccessLint, Axe and the W3C Validator. Accessibility checking is bundled from AccessLint Core (MIT), by Cameron Cundiff.
Aug 26, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.