Uploading a large archive file and managing it online will probably take you more time and energy than just downloading and installing an offline tool like 7-Zip.

While Windows does have some built-in support for file compression, it's pretty limited, and definitely not enough even for a slightly more advanced user. You don't have to be doing rocket surgery or ...

When was the last time you had to create a zip file? Personally, I have to interact with those types of files all the time (either receiving or sending them to various clients, family, and friends ...

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