AltTextAPI generates descriptive alt text from image URLs through its web service and API. It says generated descriptions are checked against WCAG 2.1 criteria and returned in under two seconds, with support for 130+ languages; the Free plan is limited to English. You can connect through a REST API, JavaScript widget, or WordPress plugin. The widget is described as working with WordPress, Shopify, Webflow, Squarespace, and plain HTML. In WordPress, the plugin can create alt text when images are uploaded and process existing media in batches of five. Image URLs must be publicly accessible: the API cannot download images from private networks, including localhost and 127.0.0.1. The maker says images are handled in memory, discarded after generation, not stored or used for model training, and not shared with third parties. It also says its infrastructure is GDPR compliant. The Free plan is 0.00 USD per free and covers 50 images per month; generation stops at the limit until the next billing cycle. Pro is 9.00 USD per month, Business 19.00 USD per month, and Agency 49.00 USD per month, but their pricing-page buttons are marked “Coming Soon.”
Who it is for
It suits site owners and teams that need alt text generated from publicly accessible image URLs, including WordPress users and sites using the listed widget platforms. The plan descriptions identify Pro for growing sites and professional bloggers, Business for ecommerce stores and content teams, and Agency for agencies managing client sites.
What is good
- Supports 130+ languages on paid plans.
- WordPress plugin generates alt text on upload.
- Bulk processing handles existing media in batches of five.
- Widget supports WordPress, Shopify, Webflow, Squarespace, and HTML.
- Images are discarded after generation, according to the maker.
What to know first
- Free plan is limited to 50 images monthly.
- Free plan supports English only.
- Private-network image URLs cannot be downloaded.
- Paid-plan buttons are marked “Coming Soon.”
Verdict
AltTextAPI offers several ways to add generated image descriptions to a site, with a free tier and plans listing higher monthly limits. Check the public-URL requirement and the paid-plan availability before choosing it.
Get started with AltTextAPI
- Open the AltTextAPI website.
- Choose the Free plan or review the listed Pro, Business, and Agency plans.
- For API use, provide a publicly accessible image URL and use the REST API.
- For a website integration, use the JavaScript widget on WordPress, Shopify, Webflow, Squarespace, or plain HTML.
- For WordPress, use the plugin to generate descriptions on upload or process existing media in batches of five.
What the free plan stops at
The Free plan includes 50 images per month and English. Once that monthly limit is reached, generation stops until the next billing cycle. The listed Pro, Business, and Agency plan buttons are marked “Coming Soon.”
Questions about AltTextAPI
How much does AltTextAPI cost?
Free costs 0.00 USD per free, Pro is 9.00 USD per month, Business is 19.00 USD per month, and Agency is 49.00 USD per month. The pricing page marks paid-plan buttons “Coming Soon.”
What is included in the Free plan?
It includes 50 images per month, English, REST API access, a usage dashboard, and API key management. Generation stops until the next billing cycle when the image limit is reached.
Which platforms can use AltTextAPI?
It lists API and web platforms. Its JavaScript widget is described as working on WordPress, Shopify, Webflow, Squarespace, and plain HTML.
Can AltTextAPI process images on private networks?
No. Image URLs must be publicly accessible; the API cannot download images from private networks such as localhost or 127.0.0.1.
Does AltTextAPI offer a WordPress plugin?
Yes. The plugin can generate alt text when images are uploaded and bulk process existing media in batches of five.
What does the maker say happens to submitted images?
The maker says images are processed in memory, discarded after generation, and neither stored nor used for model training. It also says image data is not shared with third parties.
AltTextAPI plans and pricing
All plansCompared on AI alt text generators
- Free plan
- Yes
- Paid from
- $9/mo
- Bulk processing
- Yes
- API access
- Yes
- CMS plugins
- Yes
- Supported languages
- 130 languages
- Publishing workflows
- Yes
