If you have a PDF document that has 21 or more pages, you need to include bookmarks that parallel the accessible document structure. This allows folks who use assistive technology an easier way to navigate a PDF document.
NOTE: Bookmarks are best added after the document structure tags are finalized.
How to add bookmarks based on a document’s structure via Adobe Acrobat Pro DC:
1. Select Bookmarks icon on the Accessibility Checker panel
2. Select the Options icon
3. Select New Bookmarks from Structure
4. In the Structure Elements dialog box, select the element(s) that you want to use as bookmarks.
5. Click OK.
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