Askem PDF Fixer vs PAC (PDF Accessibility Checker)

Askem PDF Fixer is a paid web service that checks PDF accessibility, applies automatic corrections, and validates results against PDF/UA-1 and applicable WCAG 2.1 AA criteria. Fixes cover document structure and tags, reading order, image alternative text, metadata, artifacts, and untagged content. Every document receives a validation result and a per-document record; Askem says more than 9 in 10 documents pass. A single upload accepts PDFs up to 500 pages and needs no integration, project, or procurement process. Batches can contain up to 200,000 documents. Files can be processed in any language, with the language set in PDF metadata. Scanned PDFs, complex tables or infographics with ambiguous meaning, context-dependent alternative text, and forms with conditional logic are flagged for manual handling. Documents are processed and stored on EU infrastructure and are not transferred outside the EU. OCR and API access are not available. Pricing is on request, with a 20-minute call offered for prospective customers.

PAC (PDF Accessibility Checker) is a free Windows desktop application for assessing PDF accessibility. Its Free plan costs nothing and includes PDF/UA and WCAG checks, quality checks, and AI-assisted checks. PAC covers WCAG 2.2 and combines automated scans with manual review tools. It also provides remediation guidance for addressing accessibility issues. The application is made by PAC (PDF Accessibility Checker), founded in 2010 and headquartered in Zurich, Switzerland. Windows is the listed platform. Mobile testing, a browser extension, and CI/CD integration are not included among its capabilities. The stated product scope is PDF accessibility checking, with checks aimed at PDF/UA and WCAG requirements rather than broad application testing. For Windows users reviewing PDF files, the free plan brings automated analysis, reviewer-led assessment, quality checks, AI-assisted checks, and guidance for remediation into one desktop application. Its feature set is focused on document accessibility rather than multi-platform testing.