There are a number of accessibility checkers, manual checks and screen readers that can be used to check a website's accessibility.
Be advised that accessibility checkers typically will only catch 40-50% of issues requiring the use of a couple different tools as well as manual checks.
- Monsido (paid software)
- Sortsite Checker – pages are checked against more than 700 standards-based checkpoints. (Paid software, 30-day demo available).
- Siteimprove (free)
- WAVE (free)
- Web Developer Toolbar (free)
- Accessibility Developer Tools (free)
- View Image Info (properties) (free)
- Manual review of HTML code
- Keyboard Controls/Navigation - manual review of site navigability using only keyboard controls
- JAWS Screen Reader in demo mode (Windows)
- NVDA (Nonvisual Desktop Access) (Windows)
- VoiceOver (Mac)
- Google ChromeVox, a Google Chrome screen reader extension