PDF Accessibility: Images

PDF Accessibility: Images


When you perform a full check on the document associated with this video, you will see that it fails the “Figures Alternate text” check. In the scan results panel, expand the “Figures alternate text” accordion, and highlight a figure in the list. This document has three images that need either a text alternative, or to be marked as an artifact. Open the context menu and select Fix. The first image is a pie chart. We can give it a text alternative that says, Northwind/Contoso Customer Loyalty Pie Chart: 80% are returning customers, 20% are one-time customers. After you write a text alternative, select the right arrow in the dialog. This will move your focus to the next image in need of a text alternative. Some figures, such as charts or infographics, may be too complex to be summarized briefly. In these cases, you can provide an external link to a page that describes the content in the figure more thoroughly. In this document, the second image is an infographic called Roadmap for Operational Health. You could set the alternate text value to “Roadmap for Operational Health. See contoso.com/roadmap for a detailed explanation.” If an image is followed by text that describes it, then it is not necessary to add a text alternative. Doing so would be redundant and create a stutter effect for screen reader users. In this example, an image of a solar panel in a grassy field is followed by text that says, Our solar panels are located in green fields where they can absorb maximum sunlight. Because this text describes the image, you would mark this image as an artifact by putting a check in the Decorative Figure checkbox. After all figures have been given a text alternative, or been marked as decorative, click the Save & Close button in the dialog. In the Accessibility Checker, the figures’ statuses are changed to Passed, because they now have a text alternative set.

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