Turn PNG images into WebP files in your browser. WebP carries an alpha channel just like PNG, so the transparent parts of a logo or screenshot stay transparent while the file gets typically 25–40% smaller. Nothing is uploaded, and you can run up to 20 files at once.
Drop PNG files here to convert to WebP
PNG in, WebP out — up to 20 files, 50.00 MB each. Nothing is uploaded.
PNG was designed for sharp edges and flat colour, and it is the only one of the two old formats that carries transparency. WebP carries transparency too, which is what makes this particular swap work: logos, icons and UI captures keep their empty space instead of being flattened onto a background, and the file gets smaller at the same time.
The saving depends on what is inside the picture. Flat areas compress well in both formats, so the gap is modest on a plain icon; the same screenshot with a photograph embedded in it can drop by a third or more, because WebP handles continuous tone far better than PNG does.
The conversion happens inside your browser. The PNG is decoded, painted on a canvas and re-encoded as WebP on your own device — nothing is uploaded, so there is no queue and no waiting for a round trip.
| If you need… | Use |
|---|---|
| PNG to WebP | Transparency kept and the file 25–40% smaller. The right swap for icons, logos and UI screenshots that will sit on a coloured background. |
| JPG to WebP | For photographs, where there is no transparency to preserve and the saving is largest. |
| Keep the PNG | When a downstream tool only accepts .png, or when the pixels have to survive being edited again — a lossy re-encode is not a round trip you can undo. |
Yes. WebP has an alpha channel, exactly like PNG, so anything transparent in the original stays transparent in the result — no white box appears behind a logo. The tool never flattens a PNG onto a background colour.
Typically 25–40%, and often more. Flat-colour artwork such as an icon or a UI screenshot saves the least, because PNG already handles flat colour well; a photographic PNG saves the most, sometimes more than half.
WebP can be encoded lossy or lossless, and this tool writes lossy WebP so the size saving is real. At the default 90% the difference is hard to see on photographs. For screenshots with small text, raise the quality slider — the encoder still re-encodes the pixels, so keep the original if you need byte-exact output.
Yes. The pixel dimensions never change — a 1200×630 PNG comes back as a 1200×630 WebP. Only the encoding changes, so nothing is lost to resizing.
Yes — up to 20 files per run, each up to 50 MB. They are processed one at a time on your own device, so a large batch does not stack up in memory.
No. Your browser decodes the PNG and re-encodes it as WebP using the Canvas API and a Web Worker. The file never leaves your device, and there is no upload time to wait for.
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