Principle 1: Perceivable

Test how various users recognize, discern, and envision web content.

Guideline 1.1 Text alternatives

• 1.1.1 Non-text content

Guideline 1.2 Time-based media

• 1.2.1 Audio-only and video-only (prerecorded)
• 1.2.2 Captions (prerecorded)
• 1.2.3 Audio description or media alternative (prerecorded)
• 1.2.4 Captions (live)
• 1.2.5 Audio descriptions (prerecorded)

Guideline 1.3 Adaptable

• 1.3.1 Info and relationships
• 1.3.2 Meaningful sequence
• 1.3.3 Sensory characteristics
• 1.3.4 Identify common purpose

Guideline 1.4 Distinguishable

• 1.4.1 Use of color
• 1.4.2 Audio control
• 1.4.3 Contrast (minimum)
• 1.4.4 Resize text
• 1.4.5 Images of text
• 1.4.10 Reflow
• 1.4.11 Non-text contrast
• 1.4.12 Text spacing
• 1.4.13 Content on hover or focus