smolp

Optimize images in your browser. Everything happens locally and your files never leave your device.

How it works

Upload images by dragging or clicking. Choose a format (JPEG, PNG, WebP, AVIF) and quality. Process them and download individually or as a ZIP.

• All local: Canvas API, no uploads
• Batch processing: optimize multiple images at once

Run

node server.js

Open http://localhost:3000.

Docker

docker compose up -d

The image is published to ghcr.io/lklynet/smolp on push to main.

docker pull ghcr.io/lklynet/smolp:latest
docker run -d -p 3000:3000 ghcr.io/lklynet/smolp:latest

Stack

• Vanilla JavaScript frontend, no framework
• Node.js HTTP server, no dependencies
• Canvas API for image processing
• JSZip for bulk downloads
• ~3 KB of handwritten CSS
• Minimal Docker image (Alpine)

License

MIT