Free PDF accessibility check

Upload a PDF to see what is wrong with it. The check is free and needs no account. Fixing is automatic and the first 5 pages each month are free.

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Up to 25 MB and 100 pages. Files are deleted automatically after 7 days.

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We tag headings, lists, tables and reading order, write alternative text for images, add the document title and language, and validate the result with veraPDF. If the fixed file does not pass validation, you are not charged.

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What the check looks at

We run veraPDF, the open-source validator from the PDF Association, against the PDF/UA-1 rules that software can test, and group the failures into plain-language categories: missing tags, images without alternative text, headings, tables, language, links and fonts.

Software can test only part of what accessibility requires. The Matterhorn Protocol lists 136 ways a PDF can fail PDF/UA; 87 of them can be checked by software. The rest, such as whether alternative text is accurate, need a person. See PDF/UA vs WCAG.