Use of images
Image use and visual content
Visual content includes pictures, SmartArt graphics, shapes, groups, charts, embedded objects, ink, and videos.
There are four very simple things to consider when adding images to web pages or documents.
- use images that support the text
- never use an image instead of text
- use correct image sizes (on the web it is best to have images around 150kb)
- use alt text on images
The Microsoft Office Accessibility Checker (opens in a new window) will list any accessibility issues in your document, including lack of alt text on images.
Why add alt text?
Alt text is used to provide an alternative description of the image for those people who are unable to view it. This may include people with visual impairments who use screen readers as well as people using text only browsers.
Alt text is also useful if the image fails to load properly.
Avoid using text in images as the sole method of conveying important information. If you must use an image with text in it, repeat that text in the document.
How to do it
Include alternative text (alt text) with all visuals.
- How to add alt text to visuals in Office 365 (opens in a new window)
- How to add alt text to visuals in Office 2019 (opens in a new window)
- How to add alt text to visuals in Office 2016 (opens in a new window)
Further information about using meaningful alt text with images can be found at WebAIM alternative text (opens in a new window)
Video: Improve accessibility with alt text
The transcript for this video is available from Microsoft Office improve accessibility with alt text (opens in a new window)
For accessible features in other Microsoft products please visit Microsoft accessibility video training (opens in a new window)