I know it's not a compression format. My point is most formats that you put in tars are already compressed! Jpgs - compressed, RAWs - already compressed, any te

I know it's not a compression format. My point is most formats that you put in tars are already compressed! Jpgs - compressed, RAWs - already compressed, any text format that isn't a plain-text file - already compressed. Compressing compressed formats is hardly worth it.