Convert PNG to WebP
Image toolFree, private PNG-to-WebP conversion that runs entirely in your browser — no upload, no sign-up.
This tool runs entirely in your browser. Your files never leave your device — nothing is uploaded.
Choose a PNG image
Drop a PNG image hereWe'll convert it to WebPBrowse files
Convert to WebP
Add a PNG image to enable conversion.
Convert PNG to WebP free in your browser to shrink large PNGs while keeping transparency. WebP supports an alpha channel just like PNG, but compresses far more efficiently — so you keep crisp edges and transparent backgrounds at a fraction of the file size.
That makes WebP an excellent replacement for heavy PNG logos, icons and graphics on the web. The conversion runs entirely on your device using the Canvas API — your image is never uploaded — and the optimised WebP downloads instantly.
Frequently asked questions
Does WebP keep PNG transparency?
Yes. WebP supports an alpha channel, so transparent areas in your PNG are preserved in the converted WebP — usually at a much smaller file size.
How much smaller will the WebP be?
It varies by image, but WebP commonly cuts PNG file sizes substantially while keeping the same visual quality and transparency, which is great for web performance.
Is my PNG uploaded?
No. Everything runs in your browser with the Canvas API, so the file stays on your device. The tool is free and needs no account.