Compress PNG Images
PNG files are lossless, which means they're often much larger than they need to be. Our compressor uses lossy quantization — reducing the color palette to 256 colors with Floyd-Steinberg dithering — to achieve dramatic file size reductions while maintaining visual quality. This is the same approach used by TinyPNG.
Drop PNG files or folders here, or
Up to 20 files, or 50 from a folder. 50 MB each.
Ctrl+Z undo · Ctrl+Y redo
Remove EXIF, GPS, and other metadata for smaller files
Total savings:
( saved)
Need to compress other formats? Full compressor
How PNG Compression Works
Traditional PNG compression is lossless (like a ZIP file) and can only save 5-15%. Our compressor goes further with lossy quantization: analyzing the image's color distribution, selecting the 256 most representative colors using median cut, and applying Floyd-Steinberg dithering to simulate the remaining colors. The result is a dramatically smaller PNG that looks virtually identical to the original. Transparency is fully preserved.
Tips for PNG Compression
- Screenshots and UI elements compress extremely well (70-85% savings)
- Photos saved as PNG will see huge savings from quantization
- Transparency (alpha channel) is fully preserved during compression
- Consider converting to WEBP for even smaller files if browser support isn't a concern
PNG Compression FAQ
How does PNG compression work if PNG is lossless?
We use lossy color quantization — reducing the image to 256 colors with dithering. This is technically lossy, but the visual difference is minimal for most images. It's the same technique TinyPNG uses.
Will my PNG transparency be preserved?
Yes. Alpha channel transparency is fully preserved during compression. Transparent PNGs remain transparent.
How much smaller will my PNG be?
Typically 50-80% smaller. Screenshots and graphics see the biggest savings. Photos saved as PNG see even more dramatic reductions.