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Sa11y, the accessibility quality assurance assistant | Accessibility Checker
Sa11y is an accessibility quality assurance tool that visually highlights common accessibility and usability issues. Geared towards content authors, Sa11y straightforwardly identifies errors or warnings at the source with a simple tooltip on how to fix them. Sa11y works in Preview mode. Features Ove
PricingFree downloadThe WordPress.org download is free. Pro versions, add-ons or external services may cost extra.
CompatibilityRequires WordPress 5.6 and PHP 7.2.
SourceWordPress plugins · Nov 10, 2026
01 / Source details
Sa11y is an accessibility quality assurance tool that visually highlights common accessibility and usability issues. Geared towards content authors, Sa11y straightforwardly identifies errors or warnings at the source with a simple tooltip on how to fix them.
Sa11y works in Preview mode.
Features
- Over 80 checks.
- Concise tooltips explain issues right at the source.
- Automatically checks content once the page has loaded.
- Highly customizable. Turn off or hide irrelevant checks.
- Content editors can temporarily dismiss warnings.
- 100% free and open source.
- Available in English, French, Spanish, Polish, Ukrainian, German, Swedish, and many more languages through machine translations.
- Supports Multisite: create global settings and custom defaults for all websites on your network.
Visit the project website for a demo or to learn more!
See it in action
Screenshots & previews.
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