AI Image Alt-Text Generator
Generate accessibility-ready image alt text with free AI — a short version under 125 characters plus a longer description. No sign-up.
Thinking…
Generate descriptive alt text from a description of your image. Tell the AI what the image shows — objects, people, actions, setting, and any visible text — and it returns a concise short version under 125 characters plus a longer 2–3 sentence version for contexts that allow it.
How to use AI Image Alt-Text Generator
- Describe what is in the image, including any visible text.
- Click "Generate alt text" to get short and long versions.
- Copy the version that fits where you will use it.
Frequently asked questions
Why do I describe the image instead of uploading it?
Free-tier text models cannot see images directly, so you provide a short description and the AI turns it into polished, accessibility-ready alt text.
What length should alt text be?
The short version stays under 125 characters — the accepted best practice for screen readers — while the long version gives 2–3 sentences for richer contexts.
Does it avoid "image of"?
Yes. It skips filler like "image of" or "picture of" and describes the content directly, which is what accessibility guidelines recommend.
Is it free?
Yes. The alt-text generator is free with no sign-up required.