What is Alternative Text?
Alternative text, commonly called ALT Text (or a specific instance can be referred to as an ALT Tag) is one of the most important requirements of web accessibility. It is the text-based description for non-text content (most commonly an image) for users who are unable to visualize the non-text content.
Alternative text has multiple uses:
- Read by screen readers (most applicable use case for your map)
- Displayed when an image cannot be loaded
- It can be used for SEO in Search Engines
Determining the correct ALT Text for a particular image is at the discretion of the user. However, there are many examples to help guide you towards using text that will be most beneficial for end-users. More information and some examples can be found here: https://webaim.org/techniques/alttext/.
How to add ALT Text to map images
1. Access the image through the location edit in the CMS and select the pencil icon for that image - an edit window will display to the right.
2. Add a title and ALT Tag description for that image and hit Save.
See an accessibility issue on our maps? We want to know! Email firstname.lastname@example.org!