#142 changes the default implementation of the webp-uploads module to generate WebP versions in addition to JPEG versions for all sub-sizes of an image. This was decided in #96, replacing the original implementation from #4 where only WebP versions would be generated.

It has already been established that we would still like to provide developers with the flexibility to make their own decision though: For example, if they want to only generate WebP versions, or even only JPEG versions, they should be free to do so.

This issue is about defining the developer API and integration to control that behavior.