Free Alt Text Generator
Compose clear, accessible alt text for your images — following best practices.
Do
- Describe the meaning or function, not just the appearance.
- Keep it under 125 characters — screen readers read it aloud.
- For decorative images, use an empty alt (alt="") so they're skipped.
Don't
- Don't start with "image of" or "picture of" — it's redundant.
- Don't keyword-stuff — write for people, not crawlers.
- Don't leave alt missing on informative images.
About the tool
Describe what's in your image, add optional context, and get concise alt text that follows accessibility guidelines — trimmed to the recommended length and free of redundant “image of” phrasing.
Flags for decorative images and images containing text guide you to the right approach, and the whole thing runs in your browser with nothing uploaded.
This free online tool is provided “as is” without any warranties, express or implied.
Understanding Alt Text & ARIA
Alt text is the written description a browser exposes when an image can't be seen — read aloud by screen readers, shown when an image fails to load, and indexed by search engines. Good alt text conveys the image's meaning and function in context, not a literal pixel-by-pixel description, so a visitor who can't see it still gets the same information.
Not every image needs a description. Purely decorative images — dividers, background flourishes, icons next to a text label — should use an empty alt (alt="") so assistive technology skips them and doesn't clutter the experience. Informative images that carry meaning always need real alt text. When in doubt, ask what a caption would say if the image vanished.
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