AI Image Caption & Alt Text Generator
Upload images and the AI describes what it sees. Use the result as SEO alt text, accessible image descriptions or a starting point for social captions.
The AI runs on your device — your images are never uploaded. The AI model is downloaded once from a public CDN and cached.
How to use the AI Image Caption & Alt Text Generator
Add images
Drop one image or many at once.
AI describes them
A vision AI model writes a short description of each picture.
Copy alt text
Copy the alt text or the full <img> tag, or export all as CSV.
Why use our AI Image Caption & Alt Text Generator?
SEO alt text
Better image SEO and Google Images rankings.
Accessibility
Help screen-reader users understand your images.
Batch mode
Describe many images at once and export a CSV.
Ready HTML
Copy a complete <img alt="…"> tag.
Private
Images are processed on your device and never uploaded.
Editable
Edit any description before copying.
What can you do with the AI Image Caption & Alt Text Generator?
Website alt text
Add accessible alt text to every image for SEO and screen readers.
Social captions
Get a quick caption idea for Instagram and Facebook posts.
Organize photos
Describe large photo collections and export them as CSV.
Product listings
Write first-draft descriptions for product images.
Frequently asked questions
Everything you need to know about the AI Image Caption & Alt Text Generator.
Back to the toolWhat is alt text?
Alt text is a short description in the alt attribute of an image. Screen readers read it aloud, and search engines use it to understand the image.
How good are the AI captions?
The AI gives short, general descriptions like “a man riding a bike on a street”. Add brand names, products or places yourself for the best SEO.
Which languages are supported?
Captions are generated in English.
Are my images uploaded?
No. The AI model runs in your browser. It is downloaded once and then cached.
How long should alt text be?
Keep it under about 125 characters, describe what matters in the image and avoid starting with “image of”.
You may also like
Have a project in mind? Let’s build it together.
Get a free consultation and a fixed-price quote within 24 hours.