Side by side
AltTextAPI vs AutoAlt.ai
Both stand on ai alt text generators. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIWeb
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.
Visit AltTextAPI
Free plan APIExtensionWeb
AutoAlt.ai combines multilingual alt-text generation with plugins, bulk processing, and an API. Check its file-size and dimension requirements, and note that paid credits are consumed per image.
Visit AutoAlt.aiThe facts
| AltTextAPI | AutoAlt.ai | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Web | API, Extension, Web |
| Lowest paid plan | Pro: $9 a month | Starter: $4.49 a month |
| Plans published | 4 | 5 |
| Maker | Not published | Not published |
| Website | altextapi.com | autoalt.ai |
| On ai alt text generators | #13 of 27 | #17 of 27 |
AltTextAPI: what it does well
- 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.”
AutoAlt.ai: what it does well
- Supports 120+ languages.
- Bulk upload, plugins, and API access are included across plans.
- Free plan provides 50 credits per month.
- Unused paid credits roll over without expiry.
- Supports nine listed image formats.
What to know first
- Each image uses one credit.
- Images must be under 16 MB.
- Images must be at least 50×50 pixels.
- Free plan has 50 credits per month.
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