Lossless optimization: bytes go down, the image stays exactly the same.
- Your file never leaves your device — the server never receives or sees it.
- Lossless optimization via oxipng — bytes shrink, the image stays pixel-for-pixel identical.
- Transparency (the alpha channel) is preserved — PNG stays PNG.
How it works
Choose a PNG
Drag a file into the drop zone or open it with the button.
Optimization runs on its own
PNG has no quality slider — lossless compression needs no choice, only the file's internal structure gets tighter.
Download the result
The finished PNG saves straight to disk, no server queue involved.