Image Compressor
Crunches JPG, PNG, and WebP. Each file keeps its format, and the goal is the smallest size you can't tell from the original.
Drop images here
Everything happens on your device — your files are never uploaded.
How it works
- 1 Drop your images or pick them.
- 2 Each one gets compressed with the best settings for its format.
- 3 Download each result, or grab them all as a zip.
Built with open source
- UPNG.js — PNG encoder with lossy compression via color quantization. · MIT
Frequently asked
Does it change my file format? +
No. JPG stays JPG, PNG stays PNG, WebP stays WebP. The file is just re-encoded at higher compression, so it shrinks while looking the same.
Will I lose quality? +
JPG and WebP are re-encoded with MozJPEG and WebP at a high quality setting that looks identical for almost everything. PNG is reduced to a 256-color palette, then repacked losslessly — sharp for screenshots, logos, and flat graphics.