ServiceNow Knowledge: Write Alternative Text for Images
Alternative text (alt text) makes an image accessible to users who cannot see the image. Use Alt text for all images inserted into a KB article.
Writing alternative text (alt text)
Alt text should replicate in words what the image is communicating. If the image shows a dialog box with a highlight, the Alt text should identify both the name of the dialog box and the highlighted selection.
For example, the image below shows where to enter Alt text when inserting an image into a ServiceNow knowledge base article. The Alt text for this image is Insert/Modify Image dialog box; Alt text field highlighted
Additional Alt Text Examples
The IT department at Northwestern University has an excellent guide for Writing Alternative Text. Page one is an excellent summary of what is important to include and what should not be included. The remaining pages contain example images for technical documentation and their corresponding alt text. You may find these examples helpful when creating your own alt text.