PNG to WebP Converter

WebP typically produces files 25–35% smaller than PNG at the same visual quality, which is why Google explicitly recommends it for faster pages. Drop a PNG in above and you get a WebP back in seconds — with full alpha transparency preserved and a quality slider so you control the size-versus-sharpness tradeoff.

Unlike most online converters, nothing is uploaded anywhere: the conversion runs entirely in your browser via WebAssembly, so your images never leave your device. That makes it safe for client work, unreleased designs, and anything else you wouldn't hand to a random server.

FAQ

Does PNG to WebP keep transparency?

Yes. WebP supports full alpha transparency, so transparent backgrounds in your PNG survive the conversion intact.

Will I lose image quality?

At the default quality setting the difference is visually indistinguishable for most images. If you need a mathematically lossless result, enable the lossless option — files still come out much smaller than PNG.

Are my images uploaded to a server?

No. The conversion happens locally in your browser. You can disconnect from the internet after the page loads and it will still work.