To see alt text in a completed PDF document, you'll need to use a screen reading app, which is an accessibility tool for visually impaired users. PDF documents should contain alt text for each image, ...

Google’s John Mueller and Lizzi Sassman discuss creating image alt text that’s good for those using screen readers, briefly touching on what to do about decorative images and how it’s tricky to write ...

Alt text is a short written description of an image that describes the appearance, content and/or function of an image. Screen readers read the alt text aloud to website visitors, allowing them to ...