I have read several threads but they refer to svg. Using the same logic, i edited the config file to include .webp extensions but it still does not work. Is there anyone who has been able to solve this?
This was a recent discussion regarding this topic -
viewtopic.php?f=2&t=13042
In summary - while Couch, per se, has no problem working with .webp (will not process the images e.g. crop or resize, though), the KCFinder uploader does not support uploading images of this format.
So, the workaround would be to either use type 'file' editable region, instead of type 'image'.
Or, manually upload the .webp files to the image folder and then one can select them into type 'image' regions.