GZ File Extension

Gnu Zipped Archive
- File Type gz
- Developer The GNU Project
- Popularity
- Application ALZip
- Category Compressed Files
- Format Binary
What is a GZ file?
Files with the GZ extension are specifically tied to Gnu Zipped Archive, a Compressed Files type, and there are 820 files in this category.
The Gnu Zipped Archive (GZ), created by GNU Project, is one of file format they developed, and they also built 7 programs to support them.
GZ file support extends to various operating systems, including Linux, Windows and Mac OS, as well as mobile devices running Windows Phone and Apple iOS. When working with GZ files, you can rely on 14 programs, including Gzip, PeaZip and The Unarchiver.
MIME types
- application/x-gzip
- application/x-compressed
Programs that support GZ files
How to open a GZ file?
If you can’t open a GZ file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.
Thanks to their popularity, Gzip, PeaZip and The Unarchiver are often the go-to programs for managing GZ files. To install the updated version of ALZip, simply go to the ESTsoft site and download the installer compatible with all major platforms.
After installation, your operating system should automatically open GZ files with ALZip.
Set ALZip as your default GZ viewer
Set default app to open files on Mac
- Right-click or Control + left-click on the desired GZ file to open a menu of available actions;
- Choose "Open in Application" and click "Other";
- Next, at the bottom of the window, you will see the "Enable" menu, in which "Recommended Programs" is selected by default;
- In this menu, select "All Programs", then find ALZip and check the box next to "Always open in the application."
Change a default app in Windows
- Take the first step by right-clicking on your GZ file. Next, select "Open With" and then choose "Choose another app" from the available options;
- From the list of applications in the pop-up window, find and select ALZip as your desired application;
- Check the "Always use this app" checkbox, and then click "OK" to set your chosen app as the default for opening GZ files.
Solving Common GZ File Challenges
There are some common issues with GZ files that can be resolved easily by making minor adjustments to your software. Below, you’ll find these issues along with practical troubleshooting tips.
Why does ALZip stop responding or crash intermittently?
Lack of software updates is a possible reason behind ALZip crash. Keep your ESTsoft products up to date by installing the latest updates.
A simple restart of your computer can often fix many common problems, which is why it is the recommended first step before making any adjustments to your software settings.
What are the best practices for repairing a GZ file that has gone bad?
In a data recovery program, open the damaged GZ file and select the "Repair" menu option. Wait for the recovery process to finish as it will automatically restore the damaged compressed files.
How do I know if my GZ file has been damaged?
Characteristics of corrupted GZ compressed files can include:
- Error alerts occur when actions are performed on the file;
- Editing the archive in Gzip is hampered by poor overall performance;
- The file encounters problems during the opening process or shows error indications;
- An unexplained increase in the size of the GZ file;
- The file causes ALZip or other software to hang or crash during various operations;
How to edit a GZ file?
To modify GZ files, you need to install special software that makes it possible to open and edit compressed files. Online GZ editors are more restricted compared to software designed for Gnu Zipped Archive.
Best GZ editors 2026
Based on these criteria, we have prepared a list of available GZ editors.
| GZ Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Gzip | Jean-loup Gailly | Linux | 4.4 out of 5 (38 reviews) |
Convert files to and from GZ
If obstacles arise while working with a GZ file, you may convert it to formats like JPEG, PDF, ZIP, ARJ, Z or other similar types for smoother handling.
After converting a GZ file, some capabilities may be limited, but you can often convert it back to the original format.
Several applications, including ALZip, can convert GZ files offline without quality loss.



















