How to Fix PDF Illustrations Reordering When Adding Accessibility Tags
Question details
Users need to resolve an issue where internal elements of complex PDF illustrations become visually reordered when accessibility tags are applied.
- Product
- Adobe Acrobat, Illustrator, InDesign PDFs
- Device & OS
- not provided
- Scenario
- Adding Figure or Caption tags to illustrations in the Reading Order panel to meet WCAG 2.1 accessibility standards.
- Observed behavior
- When tagged as figures or captions, internal artwork elements from Illustrator or InDesign shift or reorder unexpectedly, breaking the illustration's structure.
Before modifying PDF accessibility tags, save a backup copy of your document and verify that you have access to the original source files (like InDesign or Illustrator) in case structural adjustments are required.
Tag the Complete Illustration as a Single Figure
Group the complex artwork into one single Figure tag to prevent the PDF editor from separating and reordering its internal elements.
By treating complex vector objects and illustrations as a unified figure, you stop Acrobat from attempting to order the internal paths and shapes sequentially, which often results in visual reordering.
Launch your PDF in Adobe Acrobat, navigate to the Accessibility tools suite, and click on the 'Reading Order' tool.
Using your cursor, drag a selection box around the entire illustration so that all internal elements and paths are highlighted together.
Click the 'Figure' button in the Reading Order panel. This wraps the entire selection into one unified tag.
Right-click the newly created Figure tag on the page, select 'Edit Alternate Text', and provide a meaningful description of the illustration for screen readers.
Correct the Structure in the Source File
Modify the object grouping and structure directly in the Adobe InDesign or Illustrator source file before exporting to PDF.
Edit and Organize PDFs Safely with WPS Office
If you are struggling with complex PDF editors altering your layouts, switch to WPS Office. Its intuitive PDF editing tools allow you to manage text, images, and pages securely without risking unexpected layout disruptions.
- 1. Open WPS PDF Editor: Launch WPS Office and open your PDF document using the built-in PDF tool.
- 2. Access Edit Mode: Navigate to the 'Edit' tab on the top ribbon to safely modify text and image objects.
- 3. Modify Layout Seamlessly: Click on any illustration to resize, replace, or adjust it without causing the surrounding document structure to reorder.
- 4. Save Document: Click 'Save' or press Ctrl+S to finalize your changes while retaining standard PDF formatting.
Frequently Asked Questions
Why does adding a tag reorder my PDF illustration?
Acrobat attempts to guess the logical reading order based on internal paths and layers. For complex vector graphics from Illustrator or InDesign, this automatic restructuring can visually jumble the artwork if it isn't properly grouped.
How do I check the current reading order of my PDF?
You can view the document's reading order by opening the Accessibility tools, selecting the Reading Order panel, and reviewing the numbered gray boxes assigned to each visual element on the page.
Does grouping objects in InDesign help with PDF accessibility tagging?
Yes. Grouping complex illustration components into a single object in InDesign helps the PDF exporter recognize the artwork as one cohesive figure, preventing fragmentation in the final PDF tag tree.
What is WCAG 2.1 compliance for PDF images?
Under WCAG 2.1 standards, meaningful images and illustrations must have a logical reading sequence and contain descriptive Alternative Text (Alt Text) so that screen readers can accurately interpret the visual content for users.
