Convert PNG to WebP
Convert PNG files to WebP — much smaller, still transparent.
Drop an image to start
Runs in your browser. Nothing is uploaded.
WebP keeps the alpha channel, so transparency survives the conversion, and is typically a good deal smaller than the same image as PNG. For anything going on a web page this is close to a free win: every current browser supports it.
The quality slider controls the trade-off. Near the top the result is visually indistinguishable from the PNG at a fraction of the size; lower down it behaves like any lossy format and starts softening fine detail.
Transparency, colour and dimensions come across unchanged; what differs is how the pixels are packed. For icons and line art with very few colours, check the result against the PNG before committing — those are the cases where PNG's own compression is already hard to beat, and the conversion can cost you size rather than save it.
Step by step
- 1Drop in your PNG files.
- 2Set the quality; transparency comes across either way.
- 3Press Convert, then download one file or all of them.
Questions
Does WebP keep transparency?
Yes, unlike JPEG. Transparent PNGs convert cleanly.
Is WebP safe to use on a website?
Yes. Every current browser supports it, and has for years.
How much smaller will it be?
Commonly a quarter to a half the size for photographic content. Flat graphics with few colours sometimes convert to something close to the PNG.