Alt Text Generator

Generate accessible alt text for any image in seconds.

✨ Premium AI engine
🔒 This is a Premium AI tool. Create a free account to use it. Sign up free Login

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Image, PDF, Word (DOCX) or text - drop, browse, paste, or use a URL

🔒 Your files are processed privately and deleted automatically.

The Alt Text Generator turns any image into concise, screen-reader-friendly alt text in seconds. Upload a photo or screenshot and the AI writes a short, descriptive caption, the kind that goes in an image's alt attribute, so people using assistive technology understand the picture and search engines understand your page. Instead of leaving alt text blank or typing 'image123.jpg', you get a real description you can paste straight into your HTML, CMS, or social post.

It is made for developers, content teams, marketers, and anyone shipping accessible websites. Good alt text is required for WCAG accessibility compliance and helps image SEO, but writing it for hundreds of images by hand is tedious. The generator does the writing for you, keeping each caption short and specific, focused on the content and purpose of the image rather than padding it with 'image of'.

ocr.chat keeps it simple: no signup to try, your original shown next to the suggested alt text, and files deleted automatically after processing. The output is plain text you can copy in one click. Free recognition covers printed documents; the alt text generator runs on our premium AI vision tier, with paid plans from $5/mo for more pages, batch processing, and API access so you can generate alt text across an entire site.

How to alt text generator

1
Upload your image
Drag in a photo, paste a screenshot, or select the image you need alt text for.
2
Let the AI describe it
The premium vision engine looks at the image and identifies what it shows and why it matters.
3
Get concise alt text
You receive a short, single-sentence caption written for screen readers and SEO, beside your original.
4
Copy it into your page
Copy the alt text and paste it into your HTML alt attribute, CMS image field, or social post.

Common uses

  • Developers adding alt attributes to images for WCAG and ADA accessibility compliance.
  • Content and marketing teams captioning blog and product images at scale.
  • SEO specialists improving image search rankings with descriptive alt text.
  • Social media managers writing accessible descriptions for posted images.
  • Agencies retrofitting alt text across large existing websites.
  • Anyone who wants accessible images without writing every caption by hand.

Frequently asked questions

Alt text is a short written description of an image, placed in its HTML alt attribute. Screen readers read it aloud for people who cannot see the image, and search engines use it to understand the picture.

It is short by design, usually a single sentence under about 125 characters, the length screen readers handle well and the length search engines expect.

It makes images accessible to people using screen readers, is required for WCAG and ADA accessibility, and helps your images rank in image search.

Yes. Good alt text describes the content directly rather than starting with 'image of' or 'picture of', which screen readers already announce. The generator follows that best practice.

Yes. OCR extracts the text printed in an image. The alt text generator describes what the image shows, so it works even on pictures with no text.

Single images are instant. Batch processing across many files is part of the paid plans and the API, so you can caption an entire image library.

It writes descriptive alt text for meaningful images. Purely decorative images are usually best given empty alt text (alt=""), which you can apply yourself where appropriate.

It summarizes the main point of a chart or infographic in a sentence. For very data-heavy images, alt text plus a longer text description nearby is the accessible best practice.

Descriptive, accurate alt text helps search engines index your images and can drive image-search traffic, as long as it genuinely describes the picture rather than stuffing keywords.

Yes. The generated alt text is a strong starting point shown next to your original; copy it as-is or tweak it to match your tone and context before publishing.

Your uploads are processed only to produce the alt text and are deleted automatically afterward. We never sell or share your images.

You can try it with no signup, and a free account includes a monthly page bucket. The alt text generator is part of the premium AI tier; paid plans from $5/mo add more pages, batch processing, and API access.

Use this via the API

Run this tool programmatically with a single POST. Authenticate with the API token from your account page.

curl -X POST https://ocr.chat/api/v1/ocr/ \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -F "file=@your-file.png" \
  -F "tool=alt-text-generator"

Files of 5 pages or fewer return the result inline; otherwise poll the job, then download it as txt:

curl -L "https://ocr.chat/api/v1/ocr/JOB_UUID/download/?format=txt" \
  -H "Authorization: Bearer YOUR_API_TOKEN" -o result.txt
Read the API docs →

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