PNG to WebP Converter
Convert PNG images to WebP without uploading them.
File
Result
Your converted file will appear here.
About the PNG to WebP converter
WebP was designed for the web and beats both PNG and JPEG on size at equivalent quality. It supports transparency, so it is a genuine replacement for PNG rather than a compromise.
Every current browser supports it. The main holdout is older software outside the browser — some desktop image viewers and older email clients still do not.
The file is decoded, redrawn on a canvas and re-encoded by your browser. Nothing is uploaded, so there is no queue, no size cap imposed by a server, and no copy of your image left behind on someone else’s disk.
How much smaller?
For photographs, expect 25–35% smaller than a comparable JPEG and far smaller than PNG. For flat graphics and screenshots the saving over PNG is more modest but still real.
Quality here controls lossy encoding. Set it to 100 for near-lossless output that still beats PNG on size for most images.
Serving WebP safely
Use a `<picture>` element with a PNG or JPEG fallback source if you need to support very old clients. Modern browsers pick the WebP; anything else falls back silently.
Frequently asked questions
Does WebP keep transparency?
Yes, WebP has a full alpha channel. That is its main advantage over JPEG.
Is WebP lossy or lossless?
Both are possible. This converter uses lossy encoding with the quality you choose, which is the setting that produces the size advantage.
Is my image uploaded to a server?
No. The conversion runs in your browser using the canvas API. The file never leaves your device.