Need to send someone a big batch of files? Don’t attach one after another after another to your e-mail. Instead, compress the files into one smaller, easier-to-manage file. In other words, “Zip” them.

When you "zip" a file, you'll compress its data and reduce how much space it takes up on your computer or phone. Nearly all devices have built-in tools that let you zip (and later unzip) files. Over ...