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CropTransparent

Automatically crops images by removing transparent areas and uniform backgrounds.

Features

Removes transparent areas (PNG, GIF, WEBP)
Removes uniform/solid backgrounds (JPEG)
Drag-and-drop upload
In-memory processing — no files saved to disk
Light and dark mode

Screenshots

Tech Stack

Python 3.13 + FastAPI
Pillow + NumPy for image processing
Docker support

Run with Docker

docker run -p 5000:5000 ghcr.io/pianonic/croptransparent:latest

Or with Docker Compose:

docker compose up

Run Manually

pip install -r requirements.txt
python asgi.py

Open http://localhost:5000.

License