PAC Accessibility Checker

PAC (PDF Accessibility Checker) is a free, widely used tool for evaluating the accessibility of PDF documents against PDF/UA and WCAG standards. It helps identify accessibility issues, provides detailed reports, and includes features such as structure and screen reader previews to support both automated and manual accessibility testing.

PAC is an important quality assurance tool for creating accessible digital content, helping organizations ensure that PDF documents can be accessed and understood by people with disabilities. By validating document structure, tags, alternative text, and other accessibility requirements, PAC supports compliance with accessibility standards and regulations.

Features

• Automated Accessibility Testing – PAC automatically evaluates PDF documents against PDF/UA and WCAG accessibility standards, helping UWM faculty and staff quickly identify compliance issues before publishing documents.
• Detailed Error Reporting – The tool provides both summary and detailed reports that pinpoint accessibility errors and compliance gaps, making it easier to remediate documents and meet university accessibility requirements.
• Screen Reader Preview – PAC includes a screen reader preview that allows content creators to visualize how assistive technologies will interpret and present document content to users with disabilities.
• Tag Structure Validation – The checker verifies that PDF tags, headings, lists, tables, and reading order are properly structured, ensuring documents are navigable and understandable for all users.
• Supports Manual Accessibility Review – In addition to automated testing, PAC provides structure and tag-tree views that help users perform the visual inspection required for full accessibility validation.
• Promotes Inclusive and Compliant Content – By helping document authors create accessible PDFs, PAC supports UWM’s commitment to digital accessibility, equal access to information, and compliance with applicable accessibility standards and regulations.