You should use alt text in Word if your documents will be read by people who rely on accessibility tools like screen readers. And once you add alt text in Word, you can view or edit it at any time.

Adding alt text to your work can help you increase your following, record better engagement, and publish media that is accessible to people with disabilities.

To add your own alt text to a photo or video, upload the photo, mouse over it and click Edit, and then select Alternative Text on the left side. To edit it, select Override Generated Alt Text ...

When you add an image to PowerPoint, the program usually adds its own suggested alt text, which you can change. It's helpful to add alt text to your slides' images for anyone using a screen reader.

This post shows how to add Alt Text to Images, Charts, Objects & PivotTables in Excel. Alt Text provides useful information to persons with disabilities.