Before converting to Mac I ran Windows, which to my knowledge, has no built-in capability to create zip files forcing users to download and install a third party application. After converting to Mac it took me several years to realize that OS X had the built-in functionality to create zip files, which delighted me!
To create a zip file in OS X (Tiger or Leopard):
- Right click on the file or folder you would like to zip
- Select “Compress … ” or in Tiger “Create an Archive of …”
Creating zips is great if you heavily rely on email for your main form of communication; instead of attaching several documents to an email I make a new folder, name it properly, drop in all of my files, and zip it. Then I log into my favorite email client and attach the one zipped file instead of several single files, which saves me time and is easier for both me, the sender, and the receiver who now only has to download one file.