Check a PDF for accessibility — on your device

Bindery reads the structure tree, MarkInfo, language, title, viewer preferences, figures and their alternative text, form-field descriptions, links, bookmarks and table headers, and checks that every page carries a text layer. Each finding is explained in plain language with what to do about it, and the weighted score tells you at a glance whether a screen reader will cope.

It is a structural check, not a certificate: colour contrast, reading-order correctness and whether the alt text is actually meaningful still need a person. Bindery runs entirely in your browser — your file is never uploaded, so there is nothing to delete from a server afterwards.

How it works

1. Drop the PDF and open Accessibility check
2. The structure is read on your device in a second or two
3. Fix what the report lists — OCR for scans, metadata for title and language, re-export for tagging

Questions people ask

Can Bindery make an untagged PDF accessible?

Partly. It can add a title, a language and a text layer (OCR); real tagging — headings, reading order, table structure — has to come from the authoring tool’s tagged export, which the report says plainly.

Which standards does this follow?

The checks mirror the machine-testable parts of PDF/UA and WCAG 2.x for documents: structure tags, language, title, alternative text, headings, form descriptions, link text and table headers.

Is the file changed or uploaded?

Neither. The check is read-only and runs entirely in your browser.

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