Compress Files
Processed in browser — zero server upload

Compress PNG Online Free Without Software

Optimize transparent PNG graphics, logos, and UI screenshots with zero quality compromise. 100% private, client-side execution.

Image compression tool

Frequently Asked Questions About PNG Compression

Does PNG compression preserve alpha transparency?

Yes. PNG compression keeps 8-bit alpha transparency fully intact, ensuring your transparent logos, icons, and badges blend seamlessly against any background.

How does PNG compression work?

PNG compression applies intelligent palette quantization (reducing 24-bit RGB to 256 or 128 colors when suitable) alongside lossless DEFLATE entropy encoding.

Can I convert PNG to WebP?

Yes. You can select WebP in the format dropdown to achieve up to 30% smaller file sizes while preserving full alpha transparency.

Are my graphic designs kept private?

Yes. All image processing takes place strictly in your browser memory. No design assets are ever uploaded to any server.