Updated: November 8, 2026
What is a GZ file?
.gz is the gzip compression format. Unlike ZIP, gzip compresses a single file: data.csv.gz becomes data.csv once decompressed. Database dumps (.sql.gz), logs (.log.gz) and data exports often use it. When the file is called .tar.gz or .tgz, it contains a whole folder; see TAR.GZ files.
How to open GZ files here
- Click Browse above, or drop the GZ file on the box.
- The archive is opened on your device and its files are listed with their sizes.
- Click Download all as ZIP, tick the files you want and download them, or download a single file. Pictures and text files can be previewed first.
A single .gz file contains one file, so it is downloaded right away after decompression.
Other ways to open a GZ file
- Linux and Mac terminal: gunzip file.gz (or gzip -dk file.gz to keep the original).
- Mac: double-click the file.
- Windows: 7-Zip, or File Explorer on Windows 11 23H2 and later.