PDF Accessibility Checker - Private browser-local PDF pre-check

PDF Accessibility Checker is a free browser-local pre-check for machine-verifiable PDF accessibility signals. It reviews document title, language metadata, tags and structure, image-only pages, links, and forms without uploading the PDF. Users can download an explainable JSON report and make limited local title or language metadata repairs. Automated results are guidance only, not WCAG, PDF/UA, Section 508, or legal certification. Reading order, alternative-text quality, complex tables, color contrast, and real assistive-technology experience still require manual review.