Accessibility Principles

Perceivable 

Able to attain awareness through the senses

Operable

Fit, possible or desirable to use

Understandable

Able to grasp meaning, comprehend, interpet

Robust

Can perform under a wide range of conditions

Perceivable

• Text alternatives for non-text content

• Multimedia needs captions and other alternatives (audio descriptions)

• Content must be presented in multiple formats

  • must be adaptable to ensure flexibility for the user

• Content is distinguishable

  • web content can be interpreted in a diverse manner, no matter which senses are predominantly used.

Operable

• all functions can be performed with a keyboard

• content doesn’t cause adverse physical reactions like seizures

• there is enough time to read and use the content

• make sure content has logical hierarchy and is easy to use

• Multiple ways to achieve the same goal with multiple input methods 

Understandable

• Text can be read and comprehended

  • Use plain language and correct coding for languages

• Content has predictable interactions and framework

• Users are provided with instructions and assistance to fix or identify errors

  • make sure people can complete the tasks without too many error or having to repeat a proce

Robust

• Content is compatible with different operatng systems, browsers, devices and s