Why it matters
Screen readers rely on text alternatives to convey meaning. Without them, critical information is hidden from blind or low-vision users.
Common violations
- Images missing descriptive alt text
- Icon-only buttons without accessible labels
- Charts or infographics without text summaries
Code examples
Bad
<img src="hero.jpg">Good
<img src="hero.jpg" alt="Woman using a laptop on a sofa">How to fix
Add meaningful alt text to informative images, use aria-label for icon buttons, and provide adjacent text summaries for charts.
Related criteria
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