With WebP being an established image format, and AVIF as a very promising newcomer, I would like to see Episerver performing image transcoding out-of-the-box.
I know there are 3rd party libraries, like ImageProcessor and ImageResizer, doing it real-time (with some caching applied). But having it as part of the Episerver core would be very nice.
Then the transcoding of images could happen on upload/edit, to the same blob folders where the original image, its thumbnail and its scaled images are stored.
If the front end code then requests a JPEG or PNG file, but the browser specifies in the Accept request header that it supports WebP or AVIF, then it would be very nice if Episerver simply returned the images in the best supported format.
Any thoughts on this idea?