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Simple Web Accessibility Guidelines

This will help you quickly get up to speed with the Web Content Accessibility Guidelines (WCAG) , and avoid common accessibility mistakes.

It covers WCAG level A and AA requirements. Those are the accessibility standard referenced in public sector procurement laws in the UK, US public sector procurement laws, EU public sector procurement laws and public sector procurement laws around the world.

This summary is a simplification. If you're not sure how a guideline applies, check the official WCAG 2.1.

Principle 1: Perceivable

Your website must present information in ways that people can perceive.

1.1. Provide text alternatives for images

1.2. Provide alternatives for audio and videos

1.3. Make sure content can be presented in different ways

1.4. Make content easy for people to see and hear

Principle 2: Operable

Your website must be easy to navigate and use, no matter how people interact with it.

2.1. Make it easy to use with just the keyboard

2.2. Give people enough time to read and use content

2.3. Make sure it won't trigger seizures

2.4. Help people navigate and find content

2.5. Make the page work with other input methods, beyond mouse and keyboard

Principle 3: Understandable

Your website must make it easy for people to understand information, and how to complete tasks.

3.1. Make text easy to understand

3.2. Make things appear and behave in consistent, predictable ways

3.3. Help people avoid and correct mistakes

Principle 4: Robust

Your website/app must work with different web browsers and/or assistive technologies.