Convert PNG to WebP Online

Converting a PNG to WebP here is a three-step loop: drop the file, set the quality, and download. The tool decodes your PNG and re-encodes it as WebP, which keeps the transparency while roughly halving the file size, and both formats are preselected so there is no picker to manage. The encode runs in your browser through the Canvas API, never on a server. To make the saving concrete: a 900 KB transparent PNG logo encoded at quality 80 percent typically comes out around 400 to 450 KB, with the alpha channel fully intact.

1. 1Drop or select a PNG. Files up to 50 MB are accepted.
2. 2Drag the quality slider and watch the estimated file size update.
3. 3Check the before and after preview, including the transparent area.
4. 4Download the WebP. Your original PNG is never modified.

The saving depends on what is in the PNG. Photos and large graphics with gradients shrink the most, often by 50 to 70 percent, because PNG stores every pixel while WebP throws away detail the eye does not miss. Flat logos and icons shrink less, usually 30 to 60 percent, since PNG already compresses those well. A 3.2 MB product photo, for example, often lands around 1 MB as WebP. The page shows the exact result for your image before you download.

• Photos and gradients shrink the most, often 50 to 70 percent.
• Logos and icons with flat color shrink moderately, usually 30 to 60 percent.
• Small or very detailed graphics shrink the least, but rarely grow.

The headline difference is that WebP is lossy and PNG is not. WebP gets its size win by discarding detail the eye does not miss, while PNG records every pixel. That makes the swap ideal for images headed to a screen, and less ideal when the file must be edited later or printed, where the lossless original is worth keeping. The transparency is the one thing that does not change: WebP carries a full alpha channel, so transparent backgrounds survive the conversion exactly as they are.

• Icons and small UI elements: 70 to 85 percent. Small renders hide the loss well.
• Product and marketing images: 80 to 90 percent. Detail holds up at normal screen sizes.
• Photos you might zoom into: 90 to 95 percent. Keeps fine texture intact at the cost of a larger file.

WebP is the right tool for images headed to a screen, but the lossless PNG is still the better pick for some jobs. If the image will be edited again, PNG saves do not accumulate loss the way WebP re-encodes do. If the image goes to print, a lossless original is often required by the shop. And if the smallest possible file does not matter, keeping the PNG avoids any question of quality loss entirely.

• Keep the PNG for images you will edit again, since every PNG save is lossless.
• Keep the PNG for print deliveries, where a lossless original is often required.
• Convert to WebP for website and app images, where the smaller file wins.

Every image processed on this page is handled by the Canvas API inside your browser. Nothing is uploaded, no account is required, and there is no queue to wait in. That makes the tool a sensible choice for brand assets, client work, and personal photos where sending the file to a third-party service would be a problem. Processing starts the moment the file is selected and a typical conversion finishes in under a second.