Why you might need to leave WEBP behind
WEBP was introduced by Google in 2010 and gained broad support only after Safari 14 shipped in 2020. If you opened a file in an app released before 2020, or you are emailing a picture to someone on an older device, WEBP simply will not display. PNG has been supported since 1995 and works everywhere, which makes it the safest archival and interchange format there is.