Firefox Add-ons¶
WAVE Web Accessibility Extension¶
When activated, the WAVE extension injects icons and indicators into your page to give feedback about accessibility and to facilitate manual evaluation.
aXe Accessibility Engine¶
Open-source accessibility testing tool by Deque.
WCAG Contrast checker¶
Very complete sidebar contrast checker, on top of which is provided a filter to simulate 4 types of colorblindness.