This is a fork of emin/WebPQuickLook with patches from:
Tested on MacOSX 10.15.7, but should work on 10.9+.
Quick Look is a part of Mac OS X. It provides you a quick way to look at your content without open it in an application. In Finder, choose a file or folder and push the space button, then QuickLook mechanism quickly show the preview of the content. And also it is responsible for the thumbnail creation.
Most people know this mechanism. By default, OS X doesn't provide preview and thumbnail for all file types. WebP is Google's new image format and OS X doesn't recognize the .webp files. This plugin will give you an ability to see previews and thumbnails of WebP images.
https://stackoverflow.com/a/27612166/205741
If you want it for all users, put it in /Library/QuickLook, o.w. if it's just for yourself, put it in ~/Library/QuickLook.
Then run this command for changes to pick up: qlmanage -r.