How to open a .GZ file online
No extra software to download or install.
Pick your .GZ file
Drag it in or click to choose it. We read its contents list first, so it opens right away without unpacking everything.
Browse what's inside
See every file with its size, how much it's compressed and its date, and search by name across all the folders.
Preview or download
Click a file to preview text or images, or save just that one. Need everything? Download it all as a single ZIP.
About .GZ files
What a .GZ file is, and what's inside it.
A GZ file is a single file compressed with gzip, the standard Unix/Linux compressor. On Windows, open it with the free 7-Zip or PeaZip. On macOS, double-click it; Archive Utility handles it automatically. On Linux, run `gunzip file.gz` or `tar -xzf file.tar.gz`. Note that plain .gz holds only one file, so most downloads arrive as .tar.gz (many files bundled first, then compressed).
Programs that open .GZ files
| Full name | Gzip Compressed File |
|---|---|
| Developer | The GNU Project (gzip by Jean-loup Gailly and Mark Adler) |
| First released | 1992 (gzip 1.0); format standardized as RFC 1952 (1996) |
| Category | Archives |
| MIME type | application/gzip |
| Signature | 1F 8B 08 0x1F 0x8B (ID1/ID2) then 0x08 = DEFLATE method |
Related viewers
Found something inside the archive? Open it here.
Do I have to unpack the whole .GZ file?
No. The viewer reads its table of contents first and only unpacks a file when you click it. That works even with multi-gigabyte archives, because we read just the bytes we need.
Can I open password-protected archives?
Yes, for ZIP (ZipCrypto and AES) and 7Z. You'll be asked for the password,. We can't recover forgotten passwords.
Is my .GZ file uploaded anywhere?
No. The code that unpacks the file is downloaded once and then reused.
Why does a .docx or .apk open as an archive?
Because they are ZIP archives under the hood. Office documents, Android apps, Java programs and EPUB books all use ZIP as their container.
What about split archives (.001, .z01, .part1.rar)?
Multi-part archives need all their parts. Today you can open the first part to see the file list; joining parts is on our roadmap.
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