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/
Additional reading and resources:
- 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.