How to Fix Tagged PDF Accessibility Errors for Empty Elements
Question details
The user needs to resolve an accessibility check failure in a PDF caused by empty footnote tags or tags that lack corresponding text content.
- Product
- Device & OS
- not provided
- Scenario
- Running an accessibility checker on a PDF document containing footnotes to ensure it meets accessibility standards.
- Observed behavior
- The accessibility report displays a tagged-content failure indicating that a footnote element is empty or has no matching content in the Content panel.
Open the Accessibility Report panel in your PDF viewer to identify the exact page number and footnote reference triggering the tagged-content failure before modifying the document structure.
Inspect and Remove Empty Tags Manually
Use the Tags panel to manually identify and delete the empty footnote tags that are triggering the accessibility failure.
In many cases, PDF conversion tools generate ghost tags for spaces or page breaks near footnotes. Removing these empty tags resolves the accessibility error without affecting the visual layout of your document.
In your advanced PDF editor, navigate to 'View' > 'Show/Hide' > 'Navigation Panes' and click on 'Tags' to open the document's tag tree.
Expand the tag tree and scroll to the specific footnote tag (often labeled as <Note> or <Reference>) flagged by the accessibility checker.
Click on the suspect tag to see if it highlights any visible content on the page. If the tag highlights nothing and contains no child text elements, right-click the tag and select 'Delete Tag'.
Rerun the Accessibility Checker to confirm that the tagged-content failure for the empty element has been successfully resolved.
Regenerate the PDF from the Source Document
If the PDF tag structure is highly corrupted, fixing the footnotes in the original source document and re-exporting the file is often the most reliable solution.
Create Accessible PDFs Easily with WPS Office
If you are struggling with complex PDF accessibility errors, fixing your document in WPS Writer and exporting it directly to a structured PDF is a fast, reliable solution. WPS Office ensures your footnotes and document structures are accurately preserved.
- 1. Open Source Document: Launch WPS Writer and open the original document containing your footnotes.
- 2. Format Document: Ensure all text and footnotes are correctly formatted, removing any unnecessary blank spaces at the end of the page.
- 3. Export to PDF: Click on 'Menu' in the top-left corner and select 'Export to PDF'.
- 4. Save File: Review your export settings to ensure structural integrity, then click 'Export' to generate a clean, error-free PDF.
Frequently Asked Questions
What causes an empty tag error in a PDF document?
Empty tag errors usually occur during the conversion process from a source document to a PDF. If the original document had excessive blank spaces, deleted text that left invisible formatting behind, or improperly linked footnotes, the PDF converter might create a structural tag for it without inserting any actual readable content.
Can I edit PDF structural tags without advanced software?
Directly editing the underlying tag tree of a PDF typically requires advanced PDF software like Adobe Acrobat Pro. However, a simpler workaround that doesn't require advanced software is to correct the structure in your original source document (such as WPS Writer or Microsoft Word) and re-export the document as a new PDF.
Will deleting an empty tag ruin the layout of my PDF?
No. Tags only provide structural information and a logical reading order for screen readers and other assistive technologies. Deleting a tag that is genuinely empty will not remove any visible text or change how the document appears on the screen or when printed.
Why do footnotes specifically trigger accessibility check failures?
Footnotes involve a complex linking structure between the main body text and the reference note at the bottom of the page. If this link is broken, or if a footnote reference is created without corresponding text, the PDF generator creates a tag structure lacking the required child content, resulting in a tagged-content failure.
