Now supporting AVIF & WebP

AI alt text generated
in milliseconds.

One API call. Any image format. Production-ready, WCAG-compliant alt text powered by AI — so you never write it manually again.

Start for free View demo
✦Free tier · No credit card required
750msAvg response time
120+Languages supported
7Image formats
Without ATaaS
<img src="photo.jpg" alt="" />

Empty alt tags. Manual work. SEO penalties. Accessibility lawsuits.

~45 sec per image × 10,000 images = 125 hours wasted
With ATaaS
<img src="photo.jpg" alt="A golden retriever playing fetch in a sunlit park" />

AI-generated, context-aware, production-ready. Automatic.

~800ms per image. Zero manual work.

See the alt text API in action

One request. Instant, AI-generated alt text.

request.js
|
response.json
{
  "alt_text": "A golden retriever playing fetch
    in a sunlit park with autumn leaves",
  "images_used": 1,
  "images_remaining": 49
}

Built for developers who need alt text at scale

Every format

JPEG, PNG, WebP, AVIF, GIF, BMP, TIFF. If browsers render it, we process it.

Context-aware

Pass page context alongside the image for alt text that fits your content perfectly.

One endpoint

Simple REST API. One POST request. Get alt text back in under a second.

Simple, transparent pricing

Start free with 250 images/month. Scale when ready.

Free
$0/mo
  • 250 images / month
  • REST API access
  • All formats: JPG, PNG, WebP, AVIF, GIF
  • 1 API key
  • Community support
Get started
Most popular
Starter
$79/year
$108/yr Save $29

= $6.58/mo

  • 1,000 images / month
  • REST API access
  • All formats: JPG, PNG, WebP, AVIF, GIF
  • Page context (better alt texts)
  • Multilingual output (10 languages)
  • 1 API key
  • Email support
Start free trial
Pro
$249/year
$348/yr Save $99

= $20.75/mo

  • 5,000 images / month
  • Priority API (60 req/min)
  • All formats: JPG, PNG, WebP, AVIF, GIF
  • Page context
  • Multilingual output (50+ languages)
  • Bulk processing (up to 50 images/call)
  • Webhooks
  • 3 API keys
  • Priority support
Get started

Frequently asked questions

Can I start for free?
Yes — 250 images/month on the Free plan, no credit card required.
What image formats are supported?
JPEG, PNG, WebP, AVIF, GIF, BMP, TIFF — everything modern browsers support.
How fast is the API?
Average response time is under 800ms for most images.
Is the generated alt text WCAG compliant?
Yes. The alt text follows WCAG 2.1 guidelines for non-text content (Success Criterion 1.1.1). It describes the image concisely, avoids phrases like "image of", and is optimized for screen readers.
Can I use it for e-commerce product images?
Absolutely. Pass page context like product name, category, or description alongside the image and get alt text tailored to your listing — great for SEO and accessibility compliance.
How does billing work?
You get a fixed number of images per month based on your plan. Usage resets on the 1st of each month. Annual plans save up to 28%. You can upgrade, downgrade, or cancel anytime from your dashboard.
What happens if I exceed my image limit?
The API will return a 403 status code until your credits reset on the 1st of the next month. You'll receive an email when you're running low (below 20%) so you have time to upgrade if needed.
Do you store my images?
No. Images are processed in memory and discarded immediately after generating the alt text. We never store, log, or share your image data.

Stop writing alt text manually.
Automate it with AI.

Start for free