Squashfs images can be unpacked in windows with 7-zip.
The main fork 7-zip doesn't support zstd compression, but
this one does.
In linux, they can be directly mounted or mounted with squashfuse. For example, either:
- mount directly with the command: sudo mount -o loop,ro image1.sq /mnt/image1 (no additional software needed)
- mount with squashfuse: mkdir image1; squashfuse image1.sq image1