Navigation links: For URLs to be accessible to screen readers, they must be active links that are correctly tagged in the PDF document and keyboard accessible. (The best way to create accessible links is with the Create Link command, which adds link objects that screen readers require to recognize a link.) Use the Tags panel’s Find command to properly tag Links that are not accessible.
Link text must also be understandable on its own without surrounding content. If this rule check fails, check navigation links manually and verify that the content does not have links with an identical name but different target locations. Either change the link text or add actual text to the link tag to provide additional description out of context for users of screen readers.
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Documents must also provide a way for users to skip over items that appear multiple times. For example, if the same links appear on each page of the document, also include a bookmark element to skip past the repetitive link group to the next tagged element in the structure . Links can not be used to skip past repetitive links as links can not focus tags in the tree and only scroll or zoom to a particular page view.
Adobe Acrobat PDF Accessibility Tutorial. First click the View drop down menu. In Adobe Acrobat, headings are indicated by 'H1' through 'H6' tags at the top-left corner of a text block in Reading Order mode. 'P' (paragraph) tags are used to indicate normal, non-heading, text.