Curbcut

WCAG checks that explain the fix, on one page or across a whole site.

Check the page you are on against WCAG 2.2 (contrast, alt text, labels, headings, landmarks) with a clear fix for every issue.

What it does

Curbcut is a browser extension for Chrome, Edge and Firefox. Click its toolbar button (or press Alt+Shift+K), then choose Check this page. The check runs inside your browser and tests the page against the WCAG 2.2 rules for the level you choose (A, AA or AAA).

• Results: issues counted by impact (critical, serious, moderate, minor), grouped by success criterion or by rule.
• Explanations: for each issue, what is wrong, who is affected, the steps to fix it with a short code example, and a link to the W3C Understanding document.
• Show on page: scrolls to the element and draws an outline around it. The page's own markup is not changed.
• Contrast: the colours as rendered, the measured ratio, the ratio WCAG requires, and the nearest text colour that passes.
• Structure: the heading outline (with skipped levels marked) and the landmark regions of the page.
• Copy as Markdown: paste an issue into a ticket.

All of this is free, with no account and no limit on the number of checks.

Pro

Pro costs $49 per year and adds a site scan (up to 500 pages of one site), exports (CSV, JSON, printable report) and saved runs that mark each issue as new, unchanged or fixed. The same license unlocks Pro in Curbcut for VS Code. See pricing.

VS Code

Curbcut for VS Code checks HTML, JSX/TSX, Vue and Svelte files as you edit: issues in the Problems panel, explanations, quick fixes and a headings and landmarks view, free. Pro adds a workspace check, baselines and SARIF, CSV or Markdown export.

WordPress

Curbcut for WordPress checks each post and page in the block editor or the classic editor, explains every issue and outlines it on the preview, free. Pro ($79 per year, one site, sold by Freemius) adds a site scan, a site-wide issue list, CSV export and scan history.

Web app

The Curbcut web app scans whole sites on our servers, weekly or daily, keeps 13 months of trends, makes PDF and CSV reports, sends webhooks and, on Team and Agency, fails pull requests that add critical or serious issues through a CI gate. Plans cost $29, $79 or $199 per month; see pricing.

Limits

• Automated checks find only part of all WCAG failures. Test with a keyboard and a screen reader as well.
• Curbcut does not make a site compliant and does not change your pages.
• Frames from other origins are not tested; the report lists them.
• The extension's site scan reads pages in your own browser, so it sees what you can see, one page at a time. The web app scans only public pages of sites you have verified.

Privacy

The browser extension's checks run on your device. It sends no page content, browsing history or usage data anywhere and has no analytics. The only thing it ever sends is your license key, to Polar, when you activate Pro. The same is true of the VS Code extension. The web app runs on our server and stores only what its docs list. Read the privacy policy, which also covers the WordPress plugin and its optional Freemius opt-in.

Read the docs · Web app · VS Code extension · WordPress plugin · Compare · Changelog