WebP to JPG

Converting WebP to JPG trades a size advantage for compatibility, and there are several concrete situations where that trade is worth making: a print shop or photo lab that only accepts JPEG, a content management system or ad platform that rejects WebP uploads, older desktop software that cannot open the file at all, or simply wanting a format guaranteed to open correctly on any device a photo might be shared to, including ones you do not control.

A WebP-to-JPG conversion is a second lossy compression pass stacked on the first — the WebP file already discarded some information when it was created, and converting it to JPEG discards more. A higher quality setting than usual for a fresh conversion compensates for this: quality 92 keeps the second pass's own artefacts below the threshold of visibility, so what shows up in the final JPEG is essentially only the WebP's original compression, not a compounding of both. Going lower reintroduces JPEG's own blocking on top of whatever the WebP already softened, which is more visible than either pass alone would produce.

One thing this conversion cannot preserve: if the source WebP has transparency, JPEG has no alpha channel to receive it, and those pixels flatten to solid white. There is no quality setting that avoids this — it is a limit of the destination format, not of the conversion. A file with transparency that needs to stay transparent should convert to PNG instead.