When you "zip" a file, you'll compress its data and reduce how much space it takes up on your computer or phone.

You can unzip a file on a Mac by double-clicking on it to open the file with Archive Utility, or by right-clicking and selecting "Open." ...

We may receive a commission on purchases made from links. From time to time, you may need to transfer files between Windows PCs — whether it's to move documents between work computers, share photos ...