Accessibility evaluation tools are a handy resource for anyone who wants to ensure that the site they are developing meets established accessibility standards.
It is very important to keep in mind that no evaluation tool has been developed that can completely replace human testing.
- HTML Validator validates all HTML to ensure it follows the standard.
- HTML Validator add-on for Firefox verifies that web pages have correct syntax.
Use the browser’s accessibility functions (e.g. text size, zoom, no page style, navigating with the keyboard) to determine whether or not the site responds as expected to those functions.
Single page and document evaluation tools.
- WebAIM WAVE: single page checker (we recommend the WAVE Toolbar).
- AChecker: single page checker
- PDF-Accessibility-Checker (PAC): test the accessibility of PDF files.
- Accessible Digital Office Document Project: Help with the accessibility of office documents.
Add-ons and toolbars
Extend the capability of Firefox to help you easily find accessibility issues.
- Fangs Screen Reader Emulator: Firefox extension screen reader simulator generates text similar to what would be read by a screen reader, allowing a sighted user to better understand the experience that a screen reader user would have.
- NonVisual Desktop Access (NVDA): an open-source screen reader for Windows. Widely used in the visually-imparied community. Excellent for testing.
- WCAG Contrast checker: Firefox extension checks colour contrast.
- Vischeck Colorblindness Simulator
- Snook.ca Colour Contrast Check Tool
- Creating accessible PDF's (WebAIM site)
- Create accessible PDFs - Office Support (Microsoft site)
- Creating accessible Word files (Microsoft site)
- Creating accessible PowerPoint files (Microsoft site)
- Creating accessible Excel files (Microsoft site)
- Accessible Digital Office Document (ADOD) Project
- Edit YouTube captions (YouTube help site)