Available on winget

Install PDF Accessibility Checker (PAC) 2026

The free PAC PDF Accessibility Checker helps you assess your documents.

Install with winget

winget install --id axes4.PAC

Upgrade

winget upgrade --id axes4.PAC

Uninstall

winget uninstall --id axes4.PAC

About PDF Accessibility Checker (PAC) 2026

PAC is the globally used, free PDF accessibility checking tool that has been tried and tested since 2010. PAC can check many PDF/UA and WCAG requirements at the touch of a button. In addition to this, PAC also supports the required visual check.

What's new in 26.1.0.0

Improvements - Significantly improved AI model providing more reliable results—especially for images, but across all other elements as well. - AI testing can now be disabled via a registry key. - The AI tab no longer displays errors; it now only shows warnings. Bug fixes - Various minor bug fixes and improvements.

Read release notes

Version history

Version	Updated	Notes
26.1.0.0	Unknown	Improvements - Significantly improved AI model providing more reliable results—especially for images, but across all other elements as well. - AI testing can now be disabled via a registry key. - The AI tab no longer dis...
26.0.0.0	Unknown	Release notes
24.4.4	Unknown	No notes