Organise user acceptance testing
Acceptance testing checks whether a service supports expected tasks under defined conditions.
Read the practical method →W3C WAI · Images accessibles
Reference tutorial for distinguishing informative, decorative, functional and complex images and choosing their text alternatives.
Resource identity and purpose checked against the source on . This check does not verify all service conditions or individual data records.
When it helps
Decide the useful alternative for a medium according to its role in the page.
How to start
Classify an image by its page function: information, action or decoration. Write an alternative consistent with that role and test the journey without the image.
Limits to keep in mind
A detailed visual description may miss useful information. The same image may need different alternatives on different pages.
Check before using
Three points to record with the decision.
- 01
Image role in context.
- 02
Information or action conveyed by the alternative.
- 03
No unnecessary repetition of adjacent text.
A method and complementary resources.
Source and verification
W3C WAI · Images accessibles — primary source. Link checked . The checklist is editorial guidance; link availability does not guarantee completeness or suitability.
Read the editorial method · Report a correction with its source