I'm interested in backing up my hard work and time invested RPi image with all packages setting and files installed in there and put it on a RPi zero w from RPi 4B so I've seen this thread on the stack so I did it but here is the problem:
Using a 128GB card this created a file of this size on the image and it's problematic to move it to other SD cards.
How'd you backup an image and have it compressed to it's minimum size?