How to Compress a Large File

By Contributing Writer

You may wish to send out a large file via email, but many email providers have size limits that would make it difficult to send it. Whatever your file type, you should be able to compress it to make it considerably smaller and easier to send. The whole process takes a matter of minutes and will allow you to send large attachments with your emails easily.

Things You'll Need

  • WinZip for PC

Compressing Large Files on a Mac

Step 1

Open a Finder window to the file or folder you wish to compress. You can do this by searching in Spotlight as well.

Step 2

Press "Ctrl+Click" to reveal the drop-down menu for the file or folder.

Step 3

Select "Compress 'Name of Your File'" (where "Name of Your File" is the name of the file you wish to compress) from the drop-down menu. This will create a compressed Zip file version of your original.

Compressing Large Files on a PC

Step 1

Download and install WinZip. See the Resources section for a link.

Step 2

Open WinZip, and use the WinZip Wizard.

Step 3

Select "Create a New Zip File" when asked what you want to do.

Step 4

Name your Zip file, and hit "Next" on the Wizard.

Step 5

Hit the "Add Files" or "Add Folders" button to search for your file, and select the file you wish to compress.

Step 6

Hit "Zip Now." This will compress your file.

Tips & Warnings

  • If your file is still too big, you can break it up into several RAR files. See the Resources for a link to applications that will let you do that.