No. The conversion runs entirely in your browser; the file never leaves your device.

Does WebP keep transparency?

Yes. WebP supports an alpha channel, so transparent PNGs stay transparent.

Convert PNG to WebP

Convert PNG images to WebP in your browser. WebP keeps PNG's transparency while producing dramatically smaller files — ideal for web and app assets.

ImageFormatQuality

In our benchmarks, PNG to WebP cuts file size by about 70% with no visible quality loss.
WebP supports alpha transparency, so PNG transparency is preserved.
Lossless source detail is retained at high quality settings.

Upload anonymously for a permanent URL — or convert on the fly from a URL with the API.