Question

How can I safely reduce the size of an Unreal Engine project for backup without losing essential data?

I need to back up my Unreal Engine projects, but each project takes up at least 100GB of space on my disk. I want to reduce the size of these backups to save space on cloud storage or external hard drives, without risking any data loss that might prevent me from restoring the project fully.

This question is not about saving space while working, it's about saving space while archiving projects somewhere else such as cloud or hard disk backups.

Thank you.