What happens to transparent areas?

JPG has no transparency, so they are filled with the background colour you choose. White is the default.

Can it convert animated WebP?

It converts the first frame, and the row tells you so. JPG can't hold an animation.

Browsers save WebP when a website serves it, because the files are smaller. That's why a saved image may not open in older software.

No. Converting happens in your browser with WebAssembly, so nothing is sent to a server.

WebP to JPG

Turn WebP images into JPGs that every app and website accepts.

Runs on your device. Nothing is uploaded.

Add images
Drop WebP files, or click to browse.
Set quality
90 is a safe default for most images.
Pick a background
JPG can't be transparent, so choose what shows through instead.
Convert and download
Press Convert, then save each file or a ZIP.