How to Make a PDF Accessible (Screen Readers, Happy)
The short answer
Making a PDF accessible means structuring it so assistive technology — screen readers for people with visual impairments — can read it correctly. It’s real text, a correct reading order, headings and alt text, and proper tags. It’s not optional for many organizations: US federal and public-sector requirements (like ADA Title II and Section 508) and the EU’s EAA demand it. Our free PDF checker shows you exactly what’s missing.
What an accessible PDF actually needs
Five things, roughly in order of importance:
- Real text, not scans. A scanned page is an image — screen readers can’t read images. Either the PDF must have a text layer (see making PDFs searchable) or be rebuilt.
- Correct reading order. Multi-column pages must read in the logical order — column A then column B — not the visual order.
- Headings and structure. H1, H2, and so on, so users can navigate by heading — the same way this page is structured.
- Alt text for images. Every meaningful image needs a text description; decorative images get marked as such.
- Form fields and links labeled. Fields must have names, links must have descriptions.
That’s the whole job, and it’s why the accessibility checker (ours is free) is the standard starting point: it lists exactly which of these your PDF is missing.
The honest part
Here’s the reality check nobody gives you:
- Creating accessible PDFs from scratch is easy; fixing old ones is work. Word and Google Docs export tagged PDFs automatically if you use proper styles and alt text. But retrofitting a 200-page scanned legacy PDF means OCR, retagging, and restructuring — real hours.
- Free automated fixes have limits. A tool can add a text layer and tag headings, but it cannot decide the correct reading order of a weird layout or write meaningful alt text. Those need a human. Any service promising one-click accessibility on complex documents is overselling.
- Start with a check, not a fix. Run your PDF through a checker first — the free one takes seconds — so you know what’s actually broken. Most PDFs fail on the same three things: no tags, missing alt text, bad contrast.
And one legal note, honestly: if your organization serves the public, accessibility isn’t optional — the deadlines are real (ADA Title II in the US, EAA in the EU), and the documentation explains what’s expected of your documents.