Write alt text for any image in seconds. The AI looks at the picture and drafts a short, plain description for screen readers and search engines. It runs in your browser, so your images are never uploaded.
Generate alt text →- Free
- Runs on your device
- No sign-up
Natural suits ChatGPT, Gemini and Flux. Midjourney adds the aspect ratio. Keywords suits Stable Diffusion.
How to generate alt text
Three steps, no account.
Add your image
Drop it in, click to choose, or paste it with Ctrl+V.
Press Describe image
The short caption appears first, followed by a longer description you can borrow details from.
Edit and copy
Make it say what matters on your page, keep it near 125 characters, and copy it.
Good alt text, by example
The same picture, described for different pages.
| Weak | Better | Why |
|---|---|---|
| image of a dog | Golden retriever puppy asleep on a blue sofa | Says what is actually in the picture |
| chart | Bar chart: sales rose from 40 to 65 units between March and June | Gives the point of the chart |
| shoes shoes buy shoes cheap | White leather trainers with a gum sole, side view | Describes, does not stuff keywords |
| (empty for a decorative divider) | alt=”” | Decorative images should be skipped by screen readers |
Why use this image describer
Most image-to-prompt sites upload your pictures and meter free use. This one runs on your own device.
Private by design
Client work, personal photos and unreleased designs are analysed on your device and never uploaded.
Free and unlimited
No credits, no sign-up, no daily limit.
Three results at once
A detailed description, a short caption for alt text, and a prompt in the style you pick.
Edit before you copy
Every result is an editable text box: fix details and add your own style words.
Honest about limits
The AI describes what it sees and can be wrong. You stay in control of the final text.
Useful for learning
See how a picture is put into words, then change one detail and generate a new one.
Frequently asked questions
What is alt text?
Alt text is a short written description of an image. Screen readers read it aloud to people who cannot see the image, browsers show it when an image fails to load, and search engines use it to understand the picture.
How do I generate alt text for an image?
Add the image above and press Describe image. Use the “Short caption / alt text” box, edit it so it says what matters on your page, and copy it.
How long should alt text be?
One sentence, about 125 characters or fewer. The tool shows the character count under the caption.
Is AI alt text good enough to publish?
Treat it as a first draft. The AI describes what it sees but does not know why the image is on your page. Add the point of the image (for example the product name or what the chart shows) and remove anything that does not matter.
Should I start with “image of”?
No. Screen readers already announce that it is an image. Start with the subject.
Are my images uploaded?
No. The vision model is downloaded to your browser once and runs on your own device. Your images and the text written about them never leave it.
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