How to Edit an Accessible PDF

Today’s blog post explores how to edit an already accessible PDF while preserving its structure and avoiding common accessibility issues.

Video Guide

Accessible PDFs rely on tags, structure, and reading order to support assistive technologies. But what happens if, after you remediate a document and confirm it passes accessibility checks, you need to fix a typo or update content?

Make those changes carefully, because even small edits can affect structure. Or better yet, consider editing your source document and exporting it to PDF anew.

Use the Edit Tool for Text Changes

Open the Edit tool in Adobe Acrobat to modify text on the page. The tool places your content inside a text box and lets you type directly.

Use this approach for quick updates. Keep changes small to limit the impact on layout and tagging.

Make Sure the Font Is Installed

Check that the original font exists on your machine before editing.

If the font is missing:

You cannot edit the text as intended
The software may force a replacement
You may need to change more text than planned

A font mismatch can alter spacing and disrupt accessibility. Install the correct font before you begin.

Watch for Text Reflow

Change a word and the text may shift. A longer phrase can push content onto the next line.

Fix the layout by adjusting the text box:

Expand the width of the box
Move the element into place

These changes restore the visual layout, but they do not fix the underlying tags.

Review Tags After Editing

Editing an accessible PDF can break the tag structure, even with small changes. You may find empty containers or headings that no longer contain the correct content. Fix these issues in the tags panel by converting incorrect elements into artifacts and recreating tags from the selected text. This reconnects the content to the proper structure and restores the correct reading order.

Lists are more fragile and tend to break more easily during edits. Changing text inside a list can cause reflow, font inconsistencies, and loss of hierarchy, sometimes grouping everything into a single container. If the original font is missing, replacing it can make the problem worse and force you to rebuild the entire list structure, including each item and its hierarchy.

Understand the Risks Before Editing

Use direct PDF editing for small updates, such as correcting a single word in a heading or fixing a minor typo. These changes are usually manageable and require only a quick check of the tags panel to confirm the structure remains intact.

Approach larger edits with more caution. Changes inside structured content like lists, tables, or nested elements can disrupt tagging, layout, and reading order. In these cases, update the source document instead and export a new accessible PDF. After exporting, review the tags and run accessibility checks to ensure the document still meets your required standards.

Let me be your champion for inclusion. I offer tailored solutions (and self-paced courses!) to ensure your documents meet and exceed compliance expectations. For more detailed insights, tutorials, and in-depth discussions on accessibility and related topics, don’t forget to check out my YouTube channel: The Accessibility Guy on YouTube. Subscribe for regular updates!