The solution to inaccessible documentation can be as simple and low-tech as making a better index… With proper indexing, ten per cent more effort will double the accessibility of information.

William Horton, A quick (and not too dirty) fix for online documentation, in Technical Communication

Why index?

A well-crafted, interactive index provides an alphabetical collection of links to topics, concepts, and relevant names and places within a document or collection of documents. As such, it provides a way of navigating content that other methods such as tables of contents, bookmarks, browsing and search, cannot. 

Accessibility metadata

In order to meet all of the ONIX Code List 196 accessibility criteria,  ebooks need to include an index with “direct (eg hyperlinked) access to uses of the index terms in the document body.”

Our services

We provide the following services: 

  • Creating interactive indexes in PDFs
  • Creating interactive indexes in InDesign (for PDF or EPUB)
  • Editing ebook indexes to the EPUB Indexes 1.0 specification


We also offer training in creating accessible indexes as an optional additional topic in our Accessible PDFs from InDesign and Accessible ebooks from InDesign courses.