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Accessibility

How the viewer works with keyboards and screen readers, and how Foliora helps you publish accessible PDFs.

1 min read Updated

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Built into the viewer#

  • Labelled controls — every toolbar button has an accessible name.
  • Visible focus — a clear focus ring on every control.
  • Full keyboard control — see Keyboard shortcuts.
  • Page announcements — page changes are announced to screen readers through a live region (“Page 4 of 24”).
  • Reduced motion — flipbook and transitions calm down when the system asks for less motion.
  • Selectable text — the text layer lets assistive tools and readers select text.
  • Fallback link — a direct link to the file is always present.

The tagged-PDF check#

A viewer can only be as accessible as the document inside it. Tagged PDFs carry their structure — headings, reading order, alternative text — so screen readers can follow them.

On Foliora → Docs & Features every PDF is marked Tagged or Untagged (Foliora reads the PDF's MarkInfo flag). Foliora never changes your file.

Fixing an untagged PDF#

  • Word: File → Save as → PDF → Options → tick “Document structure tags for accessibility”.
  • InDesign: Export → Adobe PDF (Interactive or Print) → tick “Create Tagged PDF”.
  • Acrobat Pro: All tools → Prepare for accessibility → Automatically tag PDF, then check reading order.

Upload the new file in place of the old one and open Docs & Features again.

Turn the check off in Settings → Search and sharing → Accessibility tags. Developers can override the result with the foliora/pdf_tagged filter.