Convert PNG to WebP
Your files are processed on your device. We never upload them.
In Safari, WebP files are written with Squoosh's codecs from jSquash, under the Apache License.
How to convert PNG to WebP
- 01A ▸Choose your PNG images, or drop them on the page.
- 02A ▸Pick a quality.
- 03A ▸Select Convert to WebP, then download each image, or all of them as a zip.
About PNG to WebP
Where PNG files come from
Designs, screenshots, and product photos are often exported as PNG, which keeps every pixel and makes heavy web pages. WebP was made for the web, keeps transparency like PNG, and loads much faster.
What changes
- Transparency is kept.
- WebP compresses with some loss. At High quality it looks the same; very sharp text can soften slightly.
- Photos shrink to a fraction of their size, and logos to about half.
- Metadata inside the PNG is not copied.
Measured
Our 12-megapixel sample photo as PNG and a 1024 by 1024 pixel logo, converted at High quality in Chrome on a laptop. Phone timings are still to be measured.
| Photo, PNG to WebP | 14 MB to 1.5 MB |
|---|---|
| Logo, PNG to WebP | 47 KB to 20 KB |
| Time for the photo in Chrome (laptop) | 1.4 seconds |
| Time for the logo in Chrome (laptop) | 0.1 seconds |
In your browser
Chrome, Edge, and Firefox write WebP themselves, so nothing extra is downloaded. Safari's canvas can't write WebP, so Safari downloads an encoder of about 120 KB (libwebp) for the first conversion and then reuses it from its cache.
Limits
- WebP can't be larger than 16383 pixels on a side.
- Some older programs and email apps can't open WebP.
- Very large images may be reduced to about 16 megapixels on iPhones. The result says so.
Other options
- PNG to AVIF: smaller still, though slower to make and not read by older browsers.
- PNG to JPG: for email and apps that don't read WebP, when you don't need transparency.
- WebP to PNG: turn a WebP back into a PNG.
Questions
Does PNG to WebP keep transparency?
Yes. WebP supports transparency, so logos and stickers keep their see-through backgrounds.
Are my images uploaded?
No. Your files are processed on your device. We never upload them.
How much smaller is WebP than PNG?
For photos, many times smaller. Our 14 MB sample photo became a 1.5 MB WebP at High quality. Our 1024 pixel logo went from 47 KB to 20 KB.
Is the WebP lossless?
No. This tool saves lossy WebP, which drops detail the eye barely notices. At High or Best the difference is hard to see. Keep the PNG if you need an exact copy for editing.
Can every browser show WebP?
Yes. Chrome, Edge, Firefox, and Safari (since version 14) all show WebP. Some older desktop programs and email apps still don't, so use JPG for those.
Can I convert many images at once?
Yes. Choose or drop as many as you like and download them all as one zip.