Convert PNG images to WebP straight in your browser, one at a time or all at once. No file is uploaded anywhere: your own computer does the decoding and the encoding, which is why the conversion is instant and there is no size limit.
This is the conversion that pays for itself: a PNG screenshot routinely goes from well over a megabyte to a few tens of kilobytes, and the transparency comes through untouched.
PNG is a lossless format with transparency, ideal for screenshots, logos and drawings with flat areas of colour. The trade-off is that it is heavy with photographs, because it does not exploit the fact that the eye misses fine detail. WebP, on the other hand, is the recommended format for the web since 2020: transparency, lossy and lossless modes, and 25 to 35 % less weight than an equivalent JPEG, although older desktop software still does not always open it.
How to use it
- Drag the images onto the area above, or click to pick them.
- Choose the target format and, where it applies, the quality.
- Press “Process” and download the results one by one or together as a ZIP.
Frequently asked questions
- Is quality lost going from PNG to WebP?
- WebP compresses with loss, so yes, a little — controlled by the quality slider. At 80-85 the difference does not show on a screen. Always start from the original so recompressions do not stack up.
- What happens to transparency?
- It survives: both PNG and WebP have an alpha channel.
- Can I convert a lot at once?
- Yes. Drop in as many files as you like: they are processed in parallel across every core your processor has, and you can download them together as a ZIP.
- Are the images sent to a server?
- No. Everything happens inside this tab. Once the page has loaded you can disconnect from the network and carry on converting.