File Extension Search

.gz File Extension

Developer: The GNU Project
File type: GNU Zipped Archive File
You're here because you have a file that has a file extension ending in .gz. Files with the file extension .gz can only be launched by certain applications. It's possible that .gz files are data files rather than documents or media, which means they're not meant to be viewed at all.

what is a .gz file?

Files affixed with the .gz extension are called Gnu zipped archive files, and a .gz file is implemented with encoding specifications and compression standards developed by The GNU Project for the GZ compressed file format. These compression specifications are based on the GNU ZIP compression algorithm, also known as the GZIP compression technology. A file or folder, or even a group of files and folders can be selected by a user and compressed as one GZ file. Multiple GZ files can even be compressed as one GZ file, or these GZ files can be placed by the folder that can then be compressed as a GZ file. The GZIP compression technology and the GZ compression format were developed for Linux systems, though there are certain Microsoft Windows decompression applications implemented with support for decompressing and opening these GZ files. Users of Mac platforms can also install and use some compatible Mac decompression tools to open and view the archived content of these GZ files.

how to open a .gz file?

Launch a .gz file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .gz file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .gz files aren't yet associated with it. In this case, when you try to open a .gz file, you can tell Windows which application is the correct one for that file. From then on, opening a  .gz file will open the correct application. Click here to fix .gz file association errors

applications that open a .gz file

Corel WinZip 16 Pro

Corel WinZip 16 Pro

Compressing files frees up space in the hard disk, and Corel Win Zip 16 Pro can compress files into different formats. This software allows users to choose the level of compression and the compression method that they want to integrate into their files and folders. All Major compressed formats can be extracted by this application, and this compression and decompression software runs in Microsoft Windows XP, Vista And window 7. Internet connectivity is needed for activating this program. Corel WinZip 16 Pro can provide users with access to Zipsend, which is use to compress and send large files through email. This software may also provide users with access to Zipshare, which is use to upload compressed files to various social Websites. Backups are necessary for the important data of the user, and Corel WinZip 16 Pro provides an automated process for backing up files. Users can burn backups directly unto a CD/DVD or Blu-ray disc, or send the compressed files to the user’s email address for virtual backups.
PeaZip for Windows

PeaZip for Windows

The PeaZip for Windows tool is an application that is categorized as a freeware file compression tool. This program allows users to manage, compress and archive data contained in one or more files or folders. This software is integrated with compatibility support for the Microsoft Windows environment. This program is implemented with graphical images that users can interact with in order to access its integrated features. The file compression specifications that are used by this application include data encoding and compression algorithms similar to those used by Lazarus IDE of Free Pascal compiler. This software can be used in x86-32 and x86-64 Microsoft Windows platforms. It is capable of creating, converting and extracting a total of 150 different file formats. Aside from its easy to use graphical interface, it allows user to drag and drop regular or compressed files into the interface without requiring a temp folder. It is also integrated with the context menu of Windows Explorer so it allows user to access the program just by right clicking on the file. The installer package also offers a bundled Anti-Virus Guard (AVG) Security Toolbar adware or the plain software package. In case the bundled with adware is downloaded the user can still optionally decline the adware.


Equipped with a high compression ratio (as high as 7z format via LMZA and LMZA2), 7-Zip is an open-source ZIP archiver software that is usable on any computer regardless of operating system installed from the latest to the earlier versions and without any charge at all. Majority of the source codes used by this program are on the list of GNU LGPL License. These include unRar, RAR,ZIP, ARJ, XZ, Z, TAR, WIM, BZIP2, GZIP, CAB, HFS, LZMA, NSIS, CPIO, RPM, VHD, DEB, CHM, LZH, MBR, FAT, NTFS, XAR, DMG, CramFS, ISO, MSI, SquashFS, and UDF. Technically, formats ZIP and GZIP have a ratio of 2 to 10%, 7z has high ratio from 30 to 70% plus this same format has self extracting capability while both ZIP and 7z has AES 256 encryption. Other features include windows shell, file manager, command line version, FAR manager plug-in and localizations for languages up to 79.


Eugene Roshal developed an application that can create RAR archives called WinRAR. It is a shareware file archiver and data compression utility released by Ron Dwight in 1993, while Alexander Roshal, Eugene Roshal's brother runs the business. WinRAR provides the complete support for RAR, which is WinRAR's original format in compression, ZIP archives, and unpacking of 7z, EXE, ISO, JAR, BZ2, UUE, ACE, GZ, TAR, LZH, ARJ and Z archives. It has multithreaded compression and can create archive with multi-volume and self-extracting. Damaged archives are provided with date redundancy through recovery record and recovery volumes for reconstruction. It also supports in the advancement in file names of Unicode and file system of NTFS. It has also AES (Advanced Encryption Standard) 128-bit key to be used optionally in archive encryption. The software is available in forty seven languages. It is written in C++ and runs with Windows 95, 98, Me, 2000, XP, Vista, 7 Mac OS X, FreeBSD, LInux (Wine required for GUI), and OS/2.

a word of warning

Be careful not to rename the extension on .gz files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

what is a file extension?

A file extension is the set of three or four characters at the end of a filename; in this case, .gz. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.

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