Docs

Auth

Create one API key per account from the dashboard when your plan includes API access. Send it on every request:

Authorization: Bearer YOUR_API_KEY

Keys share the same credit pool as the web editor. Rotate a key from the dashboard if it is exposed.

Detect

Optional auto-detect returns candidate boxes and OCR strings. Manual box selection on the web UI costs nothing. When detect uses a hosted OCR model it may cost 0 or 1 credit depending on configuration.

curl -X POST https://changetextinimageai.com/api/v1/detect \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "image=@poster.png"

Edit

Replace or remove text inside a box. A successful job costs 1–2 credits. Result URLs expire after 24 hours.

1. Authenticate. Send Authorization: Bearer <key> on every request. Create one API key per account from the dashboard when API access is enabled on your plan.
2. Call Edit. POST /api/v1/edit with image (URL or multipart), box [x,y,w,h], new_text, and mode replace or remove. A successful job costs 1–2 credits.
3. Download the result. Use the returned result URL within 24 hours. Outputs are deleted after the retention window.

curl -X POST https://changetextinimageai.com/api/v1/edit \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "image=@poster.png" \
  -F "box=[120,80,240,48]" \
  -F "new_text=Sale $12" \
  -F "mode=replace"

Use mode=remove and empty new_text to erase text and fill background.

Errors

Failed jobs that never produce a result do not charge user credits. See also API overview.