Note: We’re improving the handbook and it is still a draft. If you find an error, please comment below.
Development Tools Development Tools
Building a new theme or plugin? Perhaps some of these tools can help you to create a more accessible resource.
Color Issues Color Issues
- Color Contrast Analyser (Windows) — check foreground/background contrast levels and preview designs as they might be seen by color blind users.
- Sim Daltonism — a color blindness simulator for Mac OS X.
- Colorblind Web Page Filter — apply a filter to a web page.
- Vischeck — see how pages & images look to color blind users.
- ContrastA (Flash) — find accessible color combinations.
- Color Palette Accessibility Evaluator — analyze color combinations for conformance to accessibility guidelines.
- Contrast Ratio — Tests two colors against the levels of conformance and grades you. Also shows you how font looks against those colors.
Toolbars & ToolKits Toolbars & ToolKits
- WAVE — run the WAVE accessibility evaluation tool within Firefox.
- Firefox Accessibility Extension — check the use of structural markup in a page.
- Tota11y — An accessibility visualization toolkit that can be dragged into your bookmarks bar or installed from Github. Will show errors covering multiple topics from headings, to contrast and form labels.
- Accessibility Developer Tools — This Chrome extension will add an Accessibility audit, and an Accessibility sidebar pane in the Elements tab, to your Chrome Developer Tools.
Desktop Validators Desktop Validators
- Total Validator — an (X)HTML validator, an accessibility validator, a spell checker, and a broken links checker all rolled into one tool. Free & commercial versions available.
Screen reader testing Screen reader testing
On the website of WebAIM there are some excellent articles on how to test with and for a screen reader:
- Testing with Screen Readers, Questions and Answers
- For Mac (native for iOS): Using VoiceOver to Evaluate Web Accessibility
- For Windows (free, open source): Using NVDA to Evaluate Web Accessibility
- For Windows: Using JAWS to Evaluate Web Accessibility