WCAG 2.0 is founded on 4 “top level” principles. These require that accessible web content must be:
- 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.
- Provide alternatives for time-based media.
- Create content that can be presented in different ways (for example simpler layout) without losing information or structure.
- Make it easier for users to see and hear content including separating foreground from background.
- Make all functionality available from a keyboard.
- Provide users enough time to read and use content.
- Do not design content in a way that is known to cause seizures.
- Provide ways to help users navigate, find content, and determine where they are.
- Make text content readable and understandable.
- Make Web pages appear and operate in predictable ways.
- Help users avoid and correct mistakes.
- Maximise compatibility with current and future user agents, including assistive technologies.
For more information on how to ensure your website meets requirements visit http://www.hreoc.gov.au/disability_rights/standards/WWW_3/www_3.html#wcag