JPEG is an image file format created 30 years ago by the Joint Photographic Experts Group (hence JPEG) a committee made of members from multiple standards organizations. It (along with GIF and to a lesser extent PNG) is one of the most widely used image formats on the Web.
WebP is an image format created by Google about a decade ago. The goal was to replace other formats such as JPEG and PNG. It doesn’t appear to be making much headway.
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