Better use of tags to create a barrier-free PDF with InDesign
Hello Adobe InDesign Team
for accessibility I have to use TAGs in PDFs. I creat my PDF out of InDesign and InDesign has already some features to add TAGs and structure to a PDF when exported but some features are buggy or incomplete so the PDF has to be revised manually, which is a big disadvantage especially when there are changes in the original InDesign file later.
So here some of the most imported things I would changes to make this process easier.
A barrier-free PDF need the PDF/UA-1 Note in the XMP-Metadata. I can only be done via Acrobat by now. (see PDF-UA-1.jpg)
Add custom alternative text to „all“ link-TAGs
Every link-TAG needs an alternative text to be barrier-free. By now you can only add custom alternative texts to links-TAGs that are created via the hyperlink window. But InDesign creates also link-Tags for other elements where you can not add an alternative text. This is the case if you
create a table of contents with InDesign
use end or footnotes
Missing Tags in the Paragraph Styles tag export setting
In the Paragraph Styles setting under Tagexport is no option for a caption tag or a quote tag:
See image "more tags needed". Also see this list of all possible tags https://accessible-pdf.info/de/basics/general/overview-of-the-pdf-tags/
Undefined path object
If I use graphical effects for texts or tables (drop shadow, colored underline for text, colored text box, line between table rows…) this path objects are not tagged when exported. They need to be tagged as arte fact.
Tabel, TH not THead , TD not Body
InDesign exports tabels with wrong tag. The tag for a table head is TH not THead. The tag for a table cell is TD not TBody. Also you need to be able to be more precise to define what cell is a TH in a tabel and what cell is TD. Also you have to be able to define if TH in a column refer to TD in a row. See tabel-head.
I stop the list here for now, if you completed the points above I have more to come with, just get in touch with me. I appreciate to make this work easier.