PDF accessibility

We will make your PDFs accessible to the highest possible standards. We have an unrivalled depth of knowledge and experience in the field.

Anybody wishing to know more about accessible PDFs should look no further.

David Barrett, BT Senior Inclusion and Accessibility Manager

Testing and benchmarking PDFs for accessibility

We benchmark against WCAG 2.0, and PDF/UA, when appropriate. As standard, we also test with a range of assistive technologies, each of which can inform the way a PDF should be tagged or otherwise edited for accessibility. Our test set up includes: 

  • Screen readers: JAWS (versions 9 to 18 and version 2018), SuperNova, NVDA, VoiceOver, TalkBack  
  • Screen magnifiers: ZoomText (versions 9, 10 and 11), SuperNova, MAGic 
  • Literacy software solutions: Read&Write Gold, Claro Read, vBookz PDF Voice Reader
  • Speech recognition: Dragon Naturally Speaking

Working from InDesign files

We have specialised in InDesign accessibility since InDesign version CS4. We are happy to work directly from InDesign files to optimise them for accessibility before conversion to PDF. Doing so can be significantly more efficient than working from untagged PDFs. It is also the case that some accessibility problems can only be resolved in the source file, and not retrospectively in Acrobat (for example, see Fixing justified text in InDesign). 

PDF accessibility testing/audits

How accessible are the  PDFs that you commission? We can quickly and economically test your PDFs for accessibility against PDF/UA and WCAG, and with a range of assistive technologies. We will then provide you with a detailed report on any problems they may contain.


Please see our blog and publications pages for a range of know-how articles and other resources.