PNG to WebP Converter

This page starts with the output format already chosen. You supply the files and decide how much detail to trade for size.

1. Drop your PNG files onto the box, paste them, or click to choose them. You can add a whole batch of images at once.
2. Check that Convert to is set to WebP. It is preset here.
3. Adjust Quality from 10 to 100. Unlike PNG, the WebP output made by your browser is lossy, so this slider really does change the result.
4. Press Convert images and wait a moment for large files.
5. Look at the size change shown for each file, then Download one result or Download all.

There is no single right number, but a short test finds a good one in a couple of minutes. Convert one representative image first, rather than the whole folder.

• Start with the default of 75 and note the size reported.
• Open the original and the WebP side by side and zoom to 100 percent. Look at smooth gradients, where banding shows first, and at sharp edges around text.
• If you see flaws, convert again at 85 or 90. If everything looks identical, try 60 to 65 and see how much more you save.
• Use the setting that passes your eye test on the hardest image, then convert the rest of the batch with it.

Transparency is carried over, so cut-out logos and icons can shrink without gaining a background box. That makes WebP a practical replacement for PNG on websites, where smaller images help pages load faster. Loading speed is one of several things search engines measure, though a format change alone will not decide a ranking.

Remember that lossy WebP cannot be turned back into the original. Keep the PNG as your master, and publish the WebP copy. If you later need a PNG again, WebP to PNG will make one, though it will not recover discarded detail.

Current browsers on phones and computers display WebP without trouble, and most modern editors open it. A few older programs, some email clients, print shops and upload forms still reject it, so check where the file is going before you replace anything. When in doubt, keep both versions.

One more practical warning concerns encoding. Not every browser can create WebP files from a canvas. If yours cannot, it may hand back a PNG instead, and the downloaded file would then end in .png and show little or no saving. When the extension in the result list is not .webp, try another browser.

Other things worth knowing:

• Repeated conversions are worth avoiding. Each lossy save adds a little damage, so convert from the PNG each time instead of re-saving a WebP.
• Pixel dimensions stay the same. For a smaller width and height, use the image resizer first, since fewer pixels save far more than any quality setting.
• Camera data and color profiles are not carried into the new file.
• Photographs saved as JPG have their own page, JPG to WebP, with advice for that case.
• Instead of changing format, you can keep the PNG and shrink it with Compress PNG.

For other combinations of PNG, JPEG and WebP, open the general image converter.

The table explains why PNG to WebP is popular for site graphics: it keeps the clear background of a PNG while giving the smaller files typical of lossy formats. For a plain photograph without transparency, the choice between JPG and WebP matters less, and compatibility should decide it.

Whichever format you choose, write down the settings you used so that later batches of images match the earlier ones in look and weight.