Who this applies to#
- Write alternative text for informative email images whose absence would remove meaning or function
What Email alt text requires#
- Describe the image's purpose in its context; use an empty alternative for decoration that adds no information
Web accessibility
W3C distinguishes informative non-text content from decoration and other exempt cases
What this does not require#
- Alternative text does not need to repeat adjacent text or describe purely decorative detail
Common mistakes#
- Repeating the file name
- Describing decoration
- Omitting the action of a linked image
Email alt text checklist#
- Decide whether the image is informative
- Describe its purpose
- Avoid repetition
- Test images off