Ventoy makes reinstalling operating systems or testing Linux distros much easier.
Install Ventoy once, then simply copy ISO files to your USB drive, no need to reformat it every time you add another image. It also supports multiple operating systems, Secure Boot, persistence, and many rescue tools.
GitHub: https://github.com/ventoy/Ventoy
More details: https://digitalescapetools.com/tools/tool.html?id=ventoy
More privacy-friendly tools: https://digitalescapetools.com/
with a ventoy usb stick, all you have to do is copy bootable .iso over. that's it. you get a menu at boot to pick one.
it's extremely convenient.
This is the main reason I use Ventoy.
I have a small external drive and I just dump multiple ISO files on it and then select whichever one I want at boot, I don't have to keep formatting and making new bootable drives.
You can put them all on one USB instead of trying to remember which color thumb drive has which version of which distro... nice.
the iso don't even all need to be on the same ventoy, either... since you can browse other disks and boot .iso off those, too.