API Documentation

Access Online Image Compressor features programmatically. Use our REST API for automated image optimization in your apps and workflows.

Authentication

To use the API, include your API key in the Authorization header:

Authorization: Bearer YOUR_API_KEY

🔑 Test keys available in dashboard

Example Request

curl -X POST https://api.onlineimagecompress.com/v1/compress \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "file=@example.jpg" \
  -o output.jpg

Endpoints

POST /v1/compress

Upload and compress an image.

Parameters: file (multipart/form-data)

Response: optimized image file

POST /v1/batch

Compress multiple images in one request.

Parameters: files[] (multipart/form-data)

Response: zip file with compressed images

GET /v1/status

Check API status and quota usage.

Response: JSON with status and usage info

Interactive Playground