Compatibility conversion - local
Convert WebP to JPG.
Create a widely accepted JPEG and choose exactly how transparent WebP pixels are flattened.
Convert
JPG result
Choose a WebP and set output options.
Why a background colour is required
WebP can contain transparent or partly transparent pixels; JPEG cannot. This tool fills the canvas before drawing the WebP so transparent areas become the colour you selected instead of an accidental black background.
What is not preserved
The result is a static JPEG. Animation, alpha transparency, EXIF, GPS, colour-profile metadata, and text metadata are not copied. Keep the original WebP if those features matter.