Why Use This Tool?
Some files can't afford a single changed pixel — legal scans, signed documents, design masters. This lossless compressor re-packs images into the most efficient lossless container (PNG or WebP-lossless) and keeps every pixel exactly as it was.
It tries both containers per file and downloads whichever is smaller. You get a genuine size cut with zero quality degradation, or an honest 'already optimal' when there's nothing to gain.
How It Works
- Drop any images that must stay pixel-perfect.
- The tool encodes lossless PNG and lossless WebP, keeping the smaller.
- Download — decompressed pixels are identical to the original.
Frequently Asked Questions
What does lossless actually mean?
Decompress the output and you get the exact same pixels as the input. Unlike JPG quality sliders, nothing is thrown away.
Which formats does it handle?
PNG, JPG, WebP, and GIF (first frame) all go in; the smallest lossless container comes out.
Why is WebP often the winner?
WebP's lossless mode compresses screenshots and UI captures 20–40% tighter than PNG, and it opens everywhere modern.
Tips & Things to Watch
- Keep the original master alongside the compressed copy.
- Use the lossy compressor for photos — much bigger savings.
- Perfect for design assets, scans, and archived screenshots.