@aevi1957 "webp" provides the best compression/quality ratio for compressing pictures. BTW this collection is actually ".png" format. Unless you have created an account and are logged-in you are not normally allow access to the original picture file format and instead are only allow access to the default "webp" format which is what the gallery uses. That said as I stated before "webp" is used because of its high compression of pictures to save bandwidth and also because it provides the highest compression for pictures while still retaining a high level of quality from the original file. Also I find it funny that @pple doesn't support "webp" since they're supposed to be on the cutting edge technology and innovation right?! LOL But hey no one is forcing you to be an @pple sheep...