WebP to PNG

Converting to PNG rather than JPG is the right call whenever the WebP file has transparency or will be edited further. WebP's alpha channel maps directly onto PNG's, so a transparent WebP logo or cut-out graphic converts with its transparency fully intact — converting the same file to JPG would flatten every transparent pixel to solid white or black, since JPEG has no concept of an alpha channel at all.

PNG is also the safer intermediate format for an image that is going to be edited again afterwards, even when transparency is not the concern. Because PNG is lossless, no additional compression artefacts are introduced at this step — whatever quality the original WebP had is what carries forward, rather than degrading further as another lossy JPEG pass would.

If the source WebP was created with lossy compression, converting to PNG cannot recover the detail that was already discarded when the WebP was encoded — PNG preserves exactly what it is given, but what it is given already went through one lossy step. The output will not show new compression artefacts of its own, but it will faithfully reproduce whatever the WebP already lost. For an image where quality matters and the original photo or graphic is still available, converting from that original is always better than converting from an already-compressed WebP copy.