Several examples to test accessibility of TeX documents.

• TUG

  • https://www.tug.org/twg/accessibility/ -- various links (PDF accessibility and PDF standards, papers, talks, TeX packages)

• Talks of Ross Moore:

  • TeX + MathML for Tagged PDF, the next frontier in mathematical typesetting, http://river-valley.zeeba.tv/tex-mathml-for-tagged-pdf-the-next-frontier-in-mathematical-typesetting/
  • Towards tagged PDF, http://river-valley.zeeba.tv/towards-tagged-pdf/
  • Further advances toward Tagged PDF for mathematics, http://river-valley.zeeba.tv/further-advances-toward-tagged-pdf-for-mathematics/

• tex.stackexchange.com

  • http://tex.stackexchange.com/questions/124291/revisiting-producing-structured-pdfs-from-latex
  • http://tex.stackexchange.com/questions/124291/revisiting-producing-structured-pdfs-from-latex/194226#194226
  • http://tex.stackexchange.com/questions/76027/accessibility-issues
  • http://tex.stackexchange.com/questions/19279/latex-accessibility
  • http://tex.stackexchange.com/questions/579/how-can-tagged-pdfs-be-created-that-support-universal-accessibility-and-reflowin
  • http://tex.stackexchange.com/questions/261537/a-guide-on-how-to-produce-accessible-pdf-files
  • http://tex.stackexchange.com/questions/144346/programmatically-generating-many-tagged-pdfs-with-xelatex

• TeX package accessibility

  • https://code.google.com/p/sigchi-latex/wiki/Accessibility