What Is 7-Zip?

7-Zip is a file archiver with the high compression ratio and it supports 7z, ZIP, CAB, RAR, ARJ, LZH, CHM, GZIP, BZIP2, Z, TAR, CPIO, ISO, MSI, WIM, NSIS, RPM and DEB formats. Learn More

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What Is RAR File?

RAR stands for Roshal ARchive. It is a proprietary archive file format that supports data compression, error recovery, and file spanning. It was developed by a Russian software engineer, Eugene Roshal (the first letter of his surname contributing to the name of the archive format), and is currently licensed by win.rar GmbH.

The filename extension used by RAR is .rar for the data volume set and .rev for the recovery volume set. In previous versions, if a RAR-archive was broken into many smaller files (a "multi-volume archive"), then the smaller files used the extensions .rar, .r00, .r01, .r02 etc.

Definition source: http://en.wikipedia.org/wiki/RAR

How to use 7-Zip

Compressing Files

1. Open your 7-Zip File Manager then go to the folder where your files are located.

2. Select all the files you would like to compress then click "Add".

3. A window will appear "Add to Archive". In archive format you could select any format you would like. Click "OK" to start compressing the files.

4. Progress window while compressing the files.

5. Compressed file.

Extracting an Archive File

1. Right click an archive file then move your mouse to 7-zip. A new menu will appear then select "Extract to" or "Extract Here".

2. A progress window will show up.

3. The extracted files.