About PDF Accessibility Checker
PDF Accessibility Checker keeps the complete file workflow inside this browser tab. Your selected file, its name, contents, settings, and generated output are not sent to AntiUpload or a cloud conversion service. Ads and aggregate traffic analytics stay outside the processing boundary and receive no file object or working buffer.
PDF Accessibility Checker performs a focused local audit of structural features that determine whether assistive technology can understand a document. It checks for a tagged structure tree, marked-content metadata, document language, a meaningful title and title-display setting, encryption barriers, and usable text on every page. Results are grouped as pass, warning, or failure with a plain-language explanation.
The checker is diagnostic rather than a full PDF/UA certification service. It can safely add or update the document title and language metadata, make viewers announce the title, and send image-only pages to OCR. Reading order, alternative text quality, table semantics, color contrast, and human comprehension still require manual inspection or remediation in the source authoring tool.
How it works
- Choose a PDFThe document opens locally and each page is checked for extractable text while the catalog and structure metadata are inspected.
- Read the report cardPasses, warnings, and failures explain what a screen reader is likely to encounter and why each item matters.
- Apply safe metadata fixesIf needed, set the title and language and enable display of the document title without changing page artwork.
- Continue remediationDownload the text report, run OCR on image-only pages, and fix tagging, reading order, alternative text, and semantics in the source document.