Principle 1: Perceivable - Information and user interface components must be presentable to users in ways they can perceive.
- 1.1 Text Alternatives: 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 Time-based Media: Provide alternatives for time-based media.
- 1.3 Time-based Media: Provide alternatives for time-based media.
- 1.4 Distinguishable: Make it easier for users to see and hear content including separating foreground from background.
Principle 2: Operable - User interface components and navigation must be operable.
- 2.1 Keyboard Accessible: Make all functionality available from a keyboard.
- 2.2 Enough Time: Provide users enough time to read and use content
- 2.3 Seizures: Do not design content in a way that is known to cause seizures.
- 2.4 Navigable: Provide ways to help users navigate, find content, and determine where they are.
Principle 3: Understandable - Information and the operation of user interface must be understandable.
- 3.1 Readable: Make text content readable and understandable.
- 3.2 Predictable: Make Web pages appear and operate in predictable ways.
- 3.3 Input Assistance: Help users avoid and correct mistakes.
Principle 4: Robust - Content must be robust enough that it can be interpreted reliably by a wide variety of user agents, including assistive technologies.
- 4.1 Compatible: Maximize compatibility with current and future user agents, including assistive technologies.