How to Validate Tagged PDF Tables with Screen Readers
Question details
The user needs to validate the accessibility of tagged PDF tables and troubleshoot why certain tables are read as empty pages by assistive technologies.
- Product
- PDF Editor
- Device & OS
- Windows 10
- Scenario
- Testing financial or data-heavy PDF documents for accessibility compliance to ensure table structures are correctly interpreted by screen readers.
- Observed behavior
- The screen reading tool reports the PDF page containing the table as an 'Empty Page' instead of reading the structured tabular data.
Ensure you have a full-featured screen reader like NVDA or JAWS installed, as basic text-to-speech tools often fail to interpret PDF tag structures correctly.
Inspect the PDF Tag Tree and Fix Artifacts
Verify that the table structure is properly tagged and was not accidentally marked as a background artifact.
When a screen reader announces an 'Empty Page', the document's content may have been incorrectly marked as an artifact or the tag tree might be missing the appropriate table structures.
Open your PDF in a professional PDF remediation tool (like Adobe Acrobat Pro) and navigate to the Tags pane on the left navigation bar.
Expand the tag tree and look for standard table tags, including <Table>, <TR> (Table Row), <TH> (Table Header), and <TD> (Table Data).
If the table or its text was mistakenly classified as background content (Artifact), right-click the content in the Order or Content panel, remove the artifact designation, and re-tag it appropriately.
Test with Dedicated Screen Readers and Checkers
Use industry-standard assistive technologies and verification tools to accurately pinpoint accessibility errors.
Create Accessible Source Documents Easily with WPS Office
The best way to ensure PDF accessibility is to create a well-structured source document from the start. WPS Office offers a lightweight, highly compatible, and free alternative to Microsoft Office, allowing you to build clean, properly formatted tables before exporting them to PDF.
Frequently Asked Questions
Why does my tagged PDF table read as an 'Empty Page'?
This usually happens if the table was accidentally marked as an artifact (background content), if the tag tree is corrupted, or if you are using an inadequate reading tool that doesn't interact with the document's structure.
Is Adobe Acrobat's Read Aloud sufficient for testing accessibility?
No. Acrobat's Read Aloud is a basic text-to-speech tool that does not properly interact with the PDF's structural tag tree. Always test your documents with a full-featured screen reader like JAWS or NVDA.
How do GAAP accounting requirements affect PDF table accessibility?
Accessibility standards like WCAG or PDF/UA can sometimes conflict with the strict visual layout rules required by Generally Accepted Accounting Principles (GAAP). In these cases, legal financial requirements typically take precedence, but you should strive to make the structural tags as understandable as possible without altering the mandated visual layout.
