Introduction

Guidelines

The internatiorecognized Web Accessibility Guidelines (WCAG) 2.0, published by the World Wide Web Consortium (W3C), are the most authoritative source for defining web accessibility. The W3C also published the Authoring Tool Accessibility Guidelines (ATAG) 2.0, for applications and software that create web content.

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Basics

Guidelines

Resources

Deque University

Specifications

None documented

Examples

None documented

Miscellaneous

None documented

Web Content Accessibility Guidelines (WCAG)

Checklist - Deque

Web Content Accessibility Guidelines (WCAG) 2.0

None documented

Download Summary & Checklist

None documented

Tips & Tricks

  • Web Content Accessibility Guidelines (WCAG) 2.0
    • ISO Standard: ISO/IEC 40500:2012
    • Globally referenced in law
  • The 4 Main Principles
    • Perceivable
    • Operable
    • Understandable
    • Robust
  • Guidelines & Success Criteria
    • 12 guidelines
    • 25 A SC
    • 13 AA SC
    • 23 AAA SC
  • Supporting Documents
    • Normative - How to Meet
    • Informative - Understanding
    • Examples - Techniques
      • Sufficient
      • Advisory
      • Failures
  • Conformance requirements, all must be satisfied
    1. One of the A-Levels is met in full
    2. Is for full Web pages only (no parts excluded)
    3. Complete processes
    4. Only Accessibility-Supported Ways of Using Technologies
    5. Non-Interference
  • Conformance claims (Optional)
    1. Date
    2. Guidelines title, version and URI
    3. Conformance level
    4. A concise description of the Web pages
    5. Web content technologies relied upon

Principle 1 – Perceivable

Output of web content available through multiple sensory modalities.

  • Alternatives, Time-based, Adaptable, Distinguishable
  • Sight, Sound, Touch
  • The Universal Format: Digital Text
  • ARIA Live regions
  • Only way to access is to know it’s there

Principle 2 – Operable

A Declaration of (Device) Independence.

  • Keyboard, Time, Seizures, Navigable
  • Device independant working
  • Never to be trapped
  • Focus clearly present
  • Keyboards: The (almost) Universal Input Device

Principle 3 – Understandable

Content and interfaces that people can comprehend.

  • Readable, Predictable, Input Assistance
  • Specify Language
  • Reading level
  • Consistency
  • Error Prevention and Correction

Principle 4 – Robust

Compatibility with a broad range of user agents, including assistive technologies.

Resources

Specifications

None documented

Examples

None documented

Miscellaneous

None documented

Practice

WCAG Annotations

None documented

Design Annotations

None documented

Authoring Tool Accessibility Guidelines (ATAG)

Checklist - Deque

Authoring Tool Accessibility Guidelines (ATAG) 2.0

None documented

Download Summary & Checklist

None documented

Tips & Tricks

Who ATAG is for

  • Primarily for developers of authoring tools
  • The following types of authoring tools
    • Web page authoring tools
    • Software for generating websites
    • Software converting to web
    • Multimedia authoring tools
    • Other types of Authoring tools
  • Different audiences, including policy makers, managers, and others for:

What is in ATAG 2.0

  • Two main parts
    • Part A is about making the authoring tool itself accessible
    • Part B is about the authoring tool helping authors produce accessible content
  • Organized in layers
    • Principles
    • Guidelines
    • Success criteria (A, AA and AAA)

Resources

Specifications

Examples

None documented

Miscellaneous

None documented

Practice

WCAG Annotations

None documented

Design Annotations

None documented

User Agent Accessibility Guidelines (UAAG)

Checklist - Deque

User Agent Accessibility Guidelines (UAAG)

None documented

Download Summary & Checklist

None documented

Tips & Tricks

Who UAAG is for

  • Primarily for developers of User Agents
  • The following types of User Agents
    • Web browsers
    • Browser extensions
    • Media players
    • Readers
    • Other applications that render web content
  • Different audiences, including policy makers, managers, and others for:
    • Evaluating user agents
    • Improve accessibility in future versions
    • File bugs against UAAG or refer user agent vendor to UAAG

What is in UAAG 2.0

  • PRINCIPLE 1: Perceivable
    • 1.1: Alternative content
    • 1.2: Missing content
    • 1.3: Highlighting
    • 1.4: Text configuration
    • 1.5: Volume configuration
    • 1.6: Synthesized speech configuration
    • 1.7: User style sheet configuration
    • 1.8: Orientation in viewports
    • 1.9: Alternative views
    • 1.10: Element Information
  • PRINCIPLE 2: Operable
    • 2.1: Keyboard access
    • 2.2: Sequential navigation
    • 2.3: Direct navigation and activation
    • 2.4: Text Search
    • 2.5: Structural navigation
    • 2.6: Preference settings
    • 2.7: Graphical controls
    • 2.8: Time-independent interaction
    • 2.9: Flashing
    • 2.10: Time-based media
    • 2.11: Other Input Devices
  • PRINCIPLE 3: Understandable
    • 3.1: Mistakes
    • 3.2: Documentation
    • 3.3: Predictable
  • 4: Programmatic access
    • 4.1: Assistive technology
  • 5: Specifications and conventions
    • 5.1: Follow specifications

Accessible Rich Internet Applications (WAI-ARIA)

Checklist - Deque

WAI-ARIA (Accessible Rich Internet Applications) 1.0

None documented

Download Summary & Checklist

None documented

Tips & Tricks

None documented