I use this free, open-source tool to significantly compress my games on Windows without any performance loss

Games have been getting big, with some coming in at more than 100GB in size. If you're limited on storage space, you don't typically have many options. You can uninstall some of your least-played games, but if you don't have a fast internet connection, that can still be frustrating. You could also invest in more storage or even external storage, but that can be expensive, you might be limited on slots, or it might be slower. There's another, free tool that can help you, though: CompactGUI.