Unfortunately the AppImages from the original github repository of Raspberry Pi Imager does not work for me on the Linux subsystem Crostini of my ARM64 Chrome OS laptop.
Fortunately precompiled arm64 deb packages of Raspberry Pi Imager that works under Linux subsystem Crostini in Chrome OS can be found in this archive:
https://archive.raspberrypi.org/debian/pool/main/r/rpi-imager/
USB drive in Chrome OS can be switched to Linux subsystem Crostini in Settings/About Chrome OS/Linux development environment/Manage USB devices
UPDATE: amd64 deb package can be found here:
