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Accessibility: Generating Alt Text with AI

Use AI image captioning to generate descriptive alt text for web accessibility compliance (WCAG).

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AI-Powered Alt Text Generation

Alt text is essential for web accessibility. WCAG requires meaningful text alternatives for all non-decorative images.

Why Alt Text Matters

  • Screen readers use alt text to describe images to visually impaired users
  • Search engines use alt text for image indexing
  • Alt text appears when images fail to load
  • Required for WCAG 2.1 AA compliance

    • Generating Alt Text with AI

    Use the **Image Captioner** to automatically generate descriptive captions. The AI model creates natural language descriptions like "A golden retriever playing fetch in a sunny park."

    Enhancing Descriptions

    Combine tools for richer descriptions:

    1. **Image Captioner** for overall scene description

    2. **Object Detection** for specific elements present

    3. **Image Classifier** for category context

    Best Practices

  • Review and edit AI-generated captions for accuracy
  • Be specific and descriptive
  • Avoid starting with "image of" or "picture of"
  • Include relevant context for the page content
  • Keep descriptions under 125 characters when possible

    • Try Image Captioner free - your files never leave your device

    Built for this exact workflow - 100% private, no uploads.

    Open Image Captioner

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