Software & Apps Windows Windows File Compression by Mark Baggesen Writer Mark Baggesen is a former Lifewire writer who has 20+ years' experience and has in web development, communications, web analytics, and databases. our editorial process LinkedIn Mark Baggesen Updated on January 26, 2020 Windows The Ultimate Laptop Buying Guide Tweet Share Email Use Windows File Compression to reduce the size of a file. The benefit to you will be less space used on your hard drive or other media (CD, DVD, Flash Memory Drive) and faster emailing of attachments. The type of file will determine how much file compression will reduce its size. For example, digital photos (jpegs) are compressed anyway, so compressing one using this tool may not reduce its size. However, if you have a PowerPoint presentation with lots of images in it, file compression will most certainly reduce the file size — perhaps by 50 to 80 percent. 01 of 02 Right-Click to Choose File Compression To compress files, first select the file or files you want to compress. (You can hold down the CTRL key to select multiple files. (You can compress one file, a few files, even a directory of files if you want). Once you have selected the files, right-click, select Send To and click Compressed (zipped) Folder. 02 of 02 The Original File Is Compressed Windows will compress the file or files into a zipped folder (Compressed folders appear as a folder with a zipper) and place it in the same folder as the original. You can see a screenshot of a compressed folder, next to the original one. At this point, you can use the compressed file for whatever you want: storage, email, etc. The original file will not be altered by what you do to the compressed one – these are 2 separate files.