The World Wide Web Consortium (W3C) sets the standard for web site accessibility. Each of the items below links to the W3C standards.
Web pages should be:
- 1 Perceivable
- 1.1 Provide text alternatives for any non-text content so that it can be changed into other forms people need, such as large print, braille, speech, symbols or simpler language.
- 1.2 Provide alternatives for time-based media.
- 1.3 Create content that can be presented in different ways (for example simpler layout) without losing information or structure.
- 1.4 Make it easier for users to see and hear content including separating foreground from background.
- 2 Operable
- 3 Understandable
- 4 Robust
- W3C provides a list of possible validators: http://www.w3.org/WAI/ER/tools/complete.html
- WebAim provides an online option: http://wave.webaim.org/
- The Case for Web Accessibility (web page, W3C)
- Examples of Web Accessibility (web page, W3C)
- Guide To Establishing Faculty Web Presence (PDF, 749KB, California State University, Northridge (CSUN))
- Guide For Web Accessibility Checking Tools (PDF, 623KB, California State University, Northridge (CSUN))
- Testing color contrasts (web program, independent provider)
- Testing web pages for use by individuals with colorblindness (web program, independent provider)
Although automated web page accessibility checkers can provide some false positives and be difficult to interpret, they can be one step in creating web accessibility.
Additional reading and resources: