If your Mac is running low on storage, chances are that duplicate files and photos occupy a significant part of it. If the number is low, you can get away by performing a manual search, a terminal ...

If you are running out of space on your Mac, it could be due to duplicate files. But manually finding duplicate files can be really time-consuming and you may delete the wrong files in the process.

Let's say you want a second screen for your Mac to extend or mirror your current display. If you're running macOS Catalina or higher and own an iPad, you can do it through a feature called Sidecar.