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Transformations are applied by embedding parameters directly in the URL. The first request triggers processing; subsequent requests are served from cache in under 50ms.

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Transformation URL

GET /t/{transformations}/{path/to/file.ext}
Parameters are comma-separated. Combine as many as needed in a single request. 
GET /t/w_800,h_600/photo.jpg
GET /t/w_400,h_400,c_fill,g_face,q_85,f_webp/portrait.jpg
GET /t/w_1280,h_720,q_80/video.mp4
No transformation needed? Use GET /download/{path} to serve the original file directly.

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Caching

The first request to any transformation URL processes the file and writes the result to cache (local disk or S3). Every subsequent request skips processing entirely and returns the cached asset. To bust a cached file, call DELETE /invalidate/{path} with your API key.

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Explore transformations

Image Transformations

Resize, crop, rotate, and convert images — with face detection and smart format selection.

Video Transformations

Resize, trim, extract frames, and re-encode videos with quality control.

Upload & Prewarm

Upload files and pre-generate transformed variants so the first public request is already cached.

Signed URLs

Restrict transformations to those explicitly authorized by your backend.