PNG to WebP Converter

Unlike JPG, WebP has an alpha channel. Logos, icons, product cut-outs and interface graphics keep their see-through backgrounds when converted here. In a Chromium-based browser, an image that was half transparent came back with those pixels still fully transparent in the WebP. This is the main reason to pick WebP over JPG for a PNG.

The tool asks your browser for a WebP at quality 0.92. That's a lossy setting: in a Chromium-based browser, a detailed test image came back with slightly shifted colour values after conversion. For photos and illustrations you won't normally see the change.

Where it can show:

• Pixel art and sprites, where every pixel has to be exact.
• Fine text and thin lines in screenshots, which can pick up a faint fuzz.

There's no lossless option or quality slider on this page, so for those images keep the PNG.

The encoding is done by your browser, not by a server. Under the HTML canvas standard, a browser that doesn't support writing a requested format hands back a PNG instead. This tool doesn't check what it got back and names the download .webp either way.

If the result line shows almost no size change, or an image program reports the .webp file is really a PNG, run the conversion in a different, up-to-date browser.

Conversion keeps the original width and height, so a 3000-pixel-wide PNG stays 3000 pixels wide. If it will be shown at 1200 pixels, resize it first. The Image Resizer keeps PNG files as PNG, so you can resize without any loss and then convert the smaller PNG here. That gives one lossy step instead of two.

Compare the two sizes shown after converting. WebP often wins for photos and detailed artwork, but a tiny flat-colour icon may barely change.