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.GZ File Extension

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File TypeGnu Zipped Archive

DeveloperThe GNU Project
3.8 (67 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryCompressed Files


This file is saved in a binary format, which requires a specific program to read its contents.

What is a GZ file?

A GZ file is an archive file compressed by the standard GNU zip (gzip) compression algorithm. It contains a compressed collection of one or more files and is commonly used on Unix operating systems for file compression.

More Information

Gzip is standardly installed on most Unix operating systems and is recognized by most file decompression utilities for Mac, Windows, and Unix. Gzip compression, while similar to .ZIP files, should not be confused with ZIP compression.

NOTE: Files with the extension ".tar.gz" or ".tgz" are known as a "tarballs," which are are .TAR files compressed with Gzip compression. These files must first be decompressed, then expanded using a TAR utility. They are commonly found on Unix systems.

Programs that open GZ files
File Viewer Plus
Smith Micro StuffIt Deluxe for Windows
Corel WinZip 20
WinRAR 5
E-merge WinAce
Acubix PicoZip
Smith Micro StuffIt Deluxe 16
Incredible Bee Archiver
Apple Archive Utility
File Viewer for Android
Updated 5/18/2016

FileInfo - The File Extensions Database

This page contains information about the .GZ extension and its known file associations. Our goal is to help you understand what a GZ file is and how to open it.

The Gnu Zipped Archive file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and therefore do not publish any information we have not verified.

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