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The Check Accessibility tool generates a report of issues that could make your content difficult for people with disabilities to understand. Note: This functionality is available across the entire Microsoft Office 2016 suite except Outlook.
This knowledge article demonstrates how to check accessibility in Microsoft Word 2016.
Step 1
On the File tab, click Check for Issues then select Check Accessibility.

The Inspection Results appear in the task pane.

Step 2
Right click on the picture then select Format Picture.

Step 3
Click Layout & Properties then click Alt Text to expand the section.

Step 4
In the Title field, enter a title, e.g. Image of Accessibility Checker.
