Why Acrobat Read Aloud Skips Accessible PDF Content & How to Fix It
Question details
The user wants to know why the Adobe Acrobat Read Aloud feature skips certain elements like graphics, tables, and lists in a PDF that is designed to be accessible.
- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Testing a Section 508 or WCAG compliant PDF document for accessibility using the built-in Read Aloud feature.
- Observed behavior
- The Read Aloud tool skips over slides, graphics, alternative text, tables, lists, and other structured content, giving the false impression that the document is inaccessible.
Ensure your PDF document has been properly tagged for accessibility before testing. Keep in mind that built-in read-aloud tools often have severe limitations compared to dedicated screen reading software.
Test the PDF with a Genuine Screen Reader
Acrobat Read Aloud is not a full-featured screen reader and can produce false negatives. Use dedicated accessibility software instead to accurately evaluate your document.
Acrobat's built-in Read Aloud feature is a basic text-to-speech tool, not a comprehensive screen reader. It often fails to recognize complex tag structures, alternative text for images, and table formatting required by Section 508 or WCAG standards. To properly test accessibility, you must use software designed for visually impaired users.
Install a full-featured screen reader on your computer, such as NVDA (NonVisual Desktop Access) which is free, or JAWS.
Launch your PDF document in Adobe Acrobat or your preferred accessible PDF viewer.
Use the screen reader's specific keyboard shortcuts to navigate through headings, lists, tables, and figures to verify that the structured content is being read correctly.
Verify PDF Tag Structure and Reading Order
Ensure the document's underlying structure is correctly formatted so that assistive technologies can interpret it properly.
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Frequently Asked Questions
Does Acrobat Read Aloud skipping text mean my PDF is not compliant?
No. Acrobat Read Aloud is a basic text-to-speech tool and may skip properly tagged accessible content. Always verify compliance using a true screen reader like JAWS or NVDA.
What is the difference between Acrobat Read Aloud and a screen reader?
Read Aloud only reads the text visible on the page sequentially, often ignoring the underlying structural tags. A full screen reader interprets the document's tags, allowing users to navigate by headings, read alternative text for images, and understand complex table structures.
How can I check if my PDF has alternative text for images?
You can check alternative text by opening the Tags panel in your PDF editor, right-clicking the <Figure> tag associated with the image, and selecting Properties to view the Alternate Text field.
