Processed in your browser. Your file is not uploaded.
Need advanced optimization or multiple output formats?
Your WebP image will appear here
Pick a JPG or PNG and see how much lighter the same picture becomes.
Convert JPG or PNG images to WebP locally in your browser.
How it works
WebP was built for websites and is supported by every current browser.
The file is opened locally — nothing is uploaded.
WebP holds detail well even at lower settings, so a smaller number often still looks identical.
The size before and after is shown, so you can see exactly what you saved.
More free browser tools on Nano Banana Lab.
For the same visual quality a WebP file is usually noticeably smaller than JPG or PNG, which means faster pages and less traffic.
Every current desktop and mobile browser displays WebP. Some older desktop software and print workflows still prefer JPG or PNG.
Yes. Converting a transparent PNG to WebP keeps the transparency, which JPG cannot do.
Here it is lossy and controlled by the quality slider — that is what makes the file smaller.