The closest to us conceptually: you send HTML, you get an image.
This is the most honest comparison on the list, because we do almost the same thing. HTMLCSStoImage is older, has a longer track record and Zapier, Make and n8n integrations, and imposes no notion of a template — if your HTML is generated fresh every time, their model fits better than ours.
| What | HTMLCSStoImage | Image API |
|---|---|---|
| Price per 1,000 images | $14 | $4.50 ($9 for 2,000) |
| 10,000 images a month | $69 | $29 |
| Model | HTML in every request | Template stored once, then just the fields |
| Text auto-fitting | On your side | Built in (data-autofit) |
| Cache for identical renders | Yes | Yes, and it costs no quota |
| Ready-made OG templates | No | Three, available immediately |
HTMLCSStoImage pricing ($14 / mo, 1,000 images) comes from their own public page, checked 2026-10. If something has changed — tell us and we will fix it.
Every request carries different HTML generated on your side, and you do not want to maintain templates at a vendor.
The same layout with swapped fields — then storing the template once saves bandwidth, and you get text auto-fitting and caching without writing anything.
You rewrite the template once, as HTML and CSS. Preview costs no quota, so getting the layout right is free. Then you swap a single call on your side.
curl -X POST "https://imageapi.dev/v1/images?wait=true" \
-H "Authorization: Bearer sk_live_..." \
-H "Content-Type: application/json" \
-d '{"template":"blog-og","modifications":{"title":"...","author":"..."}}'Bannerbear · Placid · Orshot · @vercel/og · Cloudinary