How to use it
- Drop your PNG files onto the box below.
- Adjust the quality if you want a smaller file.
- Press Process files and download the WebP versions.
Why the saving is so large
PNG stores every pixel exactly, which is wasteful for photographic content and for the subtle gradients and shadows in modern interface screenshots. WebP can discard information the eye does not notice, so the same picture often lands at a tenth of the size. Unlike JPEG it also keeps an alpha channel, so a logo on a transparent background stays transparent.
Keeping edges crisp
If the image is mostly flat colour with hard edges, such as a diagram or a screenshot of text, push the quality up towards 95. Lossy compression is at its most visible around sharp boundaries, and the file will still be far smaller than the PNG was.
Questions
Is transparency really preserved?
Yes. WebP has a full alpha channel, so transparent and semi-transparent pixels convert correctly.
Can I go back to PNG afterwards?
You can convert WebP back to PNG, but detail discarded during the lossy step does not return. Keep your original if you may need it.