Compress PNG
Compress PNG — lossless optimisation with oxipng. No quality loss.
Drop PNG files here
or click to browse — multiple files supported
Any image format accepted; outputs as PNG
Compression & Quality
EffortPNG is always lossless — effort only costs time
6/6
Transform
Resizenever upscales by default
Rotate & fliplossless either way
Privacy & Metadata
About this conversion
PNG keeps an exact copy of every pixel and supports transparent backgrounds, which makes it ideal for screenshots, logos, and graphics with sharp edges.
Common questions
Are my files uploaded to a server?
No. The conversion runs entirely in your browser. Your files never leave your device.
Will converting to PNG reduce quality?
No. PNG keeps every pixel exactly as it was — there is no quality loss from the conversion itself.
Also consider: If you need a smaller file and a small, usually invisible quality change is acceptable, WebP and AVIF both cut file size dramatically compared to PNG.