Basic WCAG 2.0 Principles

November 3, 2011 - Maintenance, Web Design

WCAG 2.0 is founded on 4 “top level” principles. These require that accessible web content must be:

Perceivable:

  • 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.

Operable:

  • 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.

Understandable

  • Make text content readable and understandable.
  • Make Web pages appear and operate in predictable ways.
  • Help users avoid and correct mistakes.

Robust

  • 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