POUR Accessibility Principles

There are four general principles to consider when developing e-learning content, based on the standard recommended by the Australian government:

  • P = Perceivable
  • O = Operable
  • U = Understandable
  • R = Robust


  • Provide text alternatives for non-text content.
  • Provide captions and alternatives for audio and video content.
  • Make content adaptable; and make it available to assistive technologies.
  • Use sufficient contrast to make things easy to see and hear.


  • Make all functionality keyboard accessible.
  • Give users enough time to read and use content.
  • Do not use content that causes seizures.
  • Help users navigate and find content.


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


  • Maximize compatibility with current and future technologies.