50 free images/month — No credit card

Make every image accessible & AI-visible

AI-powered alt text that meets WCAG standards, boosts SEO, and makes your images visible to ChatGPT, Claude, Perplexity, and every screen reader. Install, paste your API key, done.

WCAG 2.1 AA compliantUnder 2 seconds per image130+ languages
image → alt text

Input Image

A red fox stands on a sandy dune covered in dry grass, looking towards the viewer. In the background, the ocean meets a sandy beach under a golden sunset.

Generated Alt Text

AI Generated

“A red fox stands alert on sandy dunes surrounded by tall dry grass, with a blurred ocean horizon in the background.”

WCAG AA ✓125 chars
One line. Any website.

Drop this in. Alt text done.

No plugins. No CMS lock-in. Paste one script tag into your site and every missing alt text fills itself in — WordPress, Shopify, Webflow, Squarespace, or plain HTML.

index.html
<script
  src="https://altextapi.com/widget.js"
  data-api-key="alt_YOUR_KEY"
  data-auto="true"
></script>

Works on

Any website

Setup time

30 seconds

File size

3.2 KB

Get Your Free API Key

50 images/month free. No credit card.

Features

Everything you need for image accessibility

From single images to entire libraries. Your workflow, automated.

Accessibility Compliance

Every alt text meets WCAG 2.1 AA standards. Screen readers work perfectly. ADA and EAA compliant out of the box.

SEO Optimized

Descriptive, keyword-aware alt text that Google can actually index. Better rankings in Image Search and Google Lens.

AI-Ready Images

ChatGPT, Claude, Perplexity — they all read alt text. Make your images visible to the AI agents your customers use.

Bulk Generation

Got 500 images? One click generates alt text for all of them. Process your entire media library in minutes.

Auto on Upload

Every new image gets alt text automatically. Never think about it again. Set it, forget it, stay compliant.

130+ Languages

Generate alt text in your audience's language. Multilingual sites, global ecommerce, international audiences covered.

Multiple Integrations

WordPress plugin, REST API, JavaScript widget. Works with any CMS, any stack, any workflow.

Privacy First

Images processed on our infrastructure. No data stored. No training on your images. GDPR compliant.

How It Works

Three steps to fully accessible images

From zero to WCAG-compliant in under 2 minutes.

01

Get Your API Key

Sign up in 30 seconds. Copy your free API key from the dashboard. No credit card, no commitment.

$ curl -X POST https://api.altextapi.com/api/alt-text \
  -H "Content-Type: application/json" \
  -H "X-API-Key: alt_xxxxxxxxxxxx" \
  -d '{"image_url": "https://example.com/photo.jpg"}'
02

Connect Your Site

Paste one script tag into your site. No plugins, no CMS lock-in. Works on WordPress, Shopify, Webflow, Squarespace, and plain HTML.

<!-- Paste this into <head> -->
<script src="https://altextapi.com/widget.js"
        data-api-key="alt_YOUR_KEY"
        data-auto="true"></script>
03

Alt Text Flows Automatically

Every image gets descriptive, WCAG-compliant alt text. New uploads, existing images — all covered.

// Response
{
  "alt_text": "A red fox stands on sandy dunes...",
  "length": 112,
  "language": "en",
  "cached": false
}
Find & Fix Missing Alt Text

See how many images on your site are invisible to AI

Create a free account, then scan your site to see exactly which images ChatGPT, Claude, and screen readers can't see — plus your overall accessibility compliance score.

55%

avg images missing alt text

94.8%

sites fail accessibility

30s

to scan your site

50 images/month free. No credit card. Cancel anytime.

Pricing

Simple, transparent pricing

Start free. Upgrade when you need more. 30-day money-back guarantee on all paid plans.

Integrations

Works with your stack

Use the JS widget on any website, or the REST API from any language. CMS plugins coming soon.

Any WebsiteOne script tag
REST APIAny language, any platform
WordPressPlugin — 1-click install
ShopifyApp coming soonComing soon

Don't see your platform? Use the REST API or JavaScript widget for any custom integration.

Early Access

Be among the first to automate your alt text

We're building the fastest, most accurate AI alt text API on the market. Start free today and join developers who are making the web more accessible.

50

Free images/month

2s

Avg response time

130+

Languages supported

WCAG AA

Compliance guaranteed

Get Started Free

No credit card required. 50 images/month free forever.

FAQ

Frequently asked questions

Everything you need to know about AlTextAPI.

Alt text (alternative text) is a written description of an image that screen readers use to describe images to visually impaired users. Search engines like Google also use alt text to understand and index images. Without it, your images are invisible to both accessibility tools and AI assistants like ChatGPT. Over 55% of websites are missing alt text on their images — and with the European Accessibility Act (EAA) now enforced, missing alt text can result in fines up to €1M.
50 images per month, every month, forever. No credit card required. This covers most small blogs and personal sites. If you need more, our Pro plan ($9/mo) includes 1,000 images/month, and our Agency plan ($49/mo) is unlimited.
Yes. Every alt text is generated to meet WCAG 2.1 AA standards. We follow the W3C guidelines for descriptive, concise, and meaningful alternative text. Our AI has been specifically trained on accessibility requirements, not just generic image captioning.
Three ways: 1) JavaScript widget — add one <script> tag to your site, all images automatically get alt text. 2) REST API — POST image URLs to our API endpoint, get alt text back in JSON. 3) WordPress plugin — install from the plugin directory or upload the ZIP. Full documentation at /docs.
Images are processed in-memory and never written to disk. We don't store your images, we don't train on your images, and we don't share your data with third parties. The image is discarded immediately after alt text is generated. Our infrastructure is GDPR compliant.
130+ languages. You can generate alt text in English, Spanish, German, French, Chinese, Japanese, Arabic, and many more. The free tier supports English; Pro and above unlock all languages.
Yes. Our Agency plan ($49/mo) includes unlimited images, white-label API keys, and priority support. Perfect for agencies managing multiple client sites through the API, JS widget, or WordPress plugin.
We offer a more generous free tier (50 images/month recurring vs. 25 one-time), lower pricing ($9/mo Pro vs. $12/mo), and self-hosted AI infrastructure that gives us better margins and faster processing. Most importantly, our model is specifically fine-tuned for alt text quality — not generic image captioning. Try it free with 50 images/month, no credit card required.
Our AI is trained for accuracy, but no AI is perfect. We recommend reviewing generated alt text for critical or compliance-sensitive pages. You can always edit alt text directly in your CMS or HTML — our tool generates the initial draft, but you have full control over the final output.
On the Free plan, generation stops until the next billing cycle. On paid plans, you can set up automatic top-ups or upgrade to a higher tier. We'll send you an email when you reach 80% of your monthly allowance so you're never caught off guard. Unused credits do not roll over.
Yes. All alt text generated through our API is returned in the response and you own it. There is no vendor lock-in. You can cancel anytime and your existing alt text stays in place. For JS widget users, the alt text is written directly into your page's HTML.
Yes. If you're not satisfied with the quality of our alt text within 30 days of upgrading to a paid plan, contact us for a full refund — no questions asked. We're confident in our AI quality and want you to feel safe trying it.

Still have questions? Email us or read the docs.