This article describes what ZIP files are and why they're used in some situations. We'll also look at how to open one to see its contents, and how to convert the files inside to a different format ...

Zip files compress your folders or files and save storage on your computer. They're also easier to send from device to device. Here's how to make one.

When it comes to converting file extensions on your iPhone, don't worry about downloading a third-party app when you can make the changes yourself.