Problem Pdfs

Document title must not be blank.

WCAG 2.1 A F25 Section 508 (2017) A F25 31 pages

For HTML pages change the title element. For Office documents and PDF documents produced from Office, fill in the Title in Document Properties before saving as PDF.

Figures and images in PDF documents should have non blank ALT text, except for decorative images which should be marked as artifacts.

WCAG 2.1 A F65 Section 508 (2017) A F65 20 pages

PDF graphics with missing ALT attributes cause problems in:

  • NVDA 2019 with IE11 and Acrobat Reader: the image is ignored.
  • JAWS 2019 with IE11 and Acrobat Reader: a meaningless label like 'eleven graphic' is voiced.
  • VoiceOver macOS with Safari: a meaningless label like 'image' is voiced.
  • VoiceOver iOS with Safari: the image is ignored.

Each image should have an ALT attribute describing the picture, which screen readers can read aloud.

PDFs must be tagged to be accessible by screen readers.

WCAG 2.1 A 1.3.1 Section 508 (2017) A 1.3.1

Enable the 'Document structure tags' option in Word, or the 'Tagged PDF' option in OpenOffice when exporting, or use the 'Make Accessible' plug-in for Adobe Acrobat.

Use the lang attribute to identify the language of the page.

WCAG 2.1 A 3.1.1 Section 508 (2017) A 3.1.1

In HTML add a lang attribute containing a language code to the html tag, and in PDF set the language using Document Properties in Acrobat. This allows screen readers to pronounce words correctly.