Compress

Losslessly shrink many PNGs at once

Add a batch of PNGs, compress them all losslessly, download each one. Everything runs in your browser — nothing is uploaded.

1
Add PNGs
0 added
2
Choose how much to compress

Genuinely lossless — every pixel comes out identical in every file. On photographic PNGs the savings are often modest; on screenshots or simple graphics they can be much larger.

Common questions

Does this affect image quality at all?
No — every file processed here comes out pixel-for-pixel identical to what you uploaded. Only the file size changes.
Is there a limit on how many PNGs I can process at once?
No hard limit, but each file is optimized on your own device, one at a time, so a large batch will simply take longer rather than fail.