Compress a Folder or File

Information

This will show you how to compress or decompress a folder or file with NTFS Compression to reduce their size. NTFS Compression allows you to save some hard drive space by compressing files and folders to reduce their size. You cannot encrypt an NTFS compressed file.

NOTE

You may notice a decrease in performance when working with NTFS-compressed files. When you open a compressed file, Vista automatically decompresses it for you, and when you close the file, Vista compresses it again. This process may decrease your computers performance since it takes a little longer to open and close a compressed folder or file.

WARNING

This is not Zipped Compression for creating ZIP files.

• How to Encrypt or Decrypt a Folder or File in Vista
• How to Disable or Enable Encryption in Vista
• How to Disable or Enable Low Disk Space Warning in Vista
• How to Disable or Enable NTFS Compression in Vista

Uncompressed.jpgCompressed.jpg

1. Right click the folder or file you want to encrypt or decrypt, and then click on Properties.
2. Under the General tab, click on the Advanced button. (See screenshot below)

Properties.jpg

3. To Compress a File or Folder -
NOTE: You will only be able to choose to either Encrypt or Compress contents, not both at the same time.
A) Check Compress contents to save disk space and click OK. (See screenshot below step 4)
B) Go to step 5.

4. To Decompress a File or Folder -

A) Uncheck Compress contents to save disk space and click OK.

Advanced_Attributes.jpg

5. Click OK in Properties. (See screenshot below step 2)
6. If the folder contains files or subfolders, you will see this. (See screenshot below step 7)
NOTE: You will not see this for just a file or empty folder.

7. Select the option you want compressed or decompressed and click OK.

Confirm_Changes.jpg