PNG Compressor
Shrinks PNGs with color quantization for real savings, with a lossless option for when you can't give up a single pixel.
Drop images here
Everything happens on your device — your files are never uploaded.
Colors
How it works
- 1 Drop your PNGs or pick them.
- 2 Pick a color count, or keep it lossless.
- 3 Download each one, or grab them all as a zip.
Built with open source
- UPNG.js — PNG encoder with lossy compression via color quantization. · MIT
Frequently asked
How does PNG compression work here? +
It shrinks the color palette with the same engine pngquant uses, then repacks the file with oxipng. Fewer colors, smaller files. Lossless keeps every color and just repacks.
Will transparency be kept? +
Yes. Your PNG's transparency survives compression.