GZ Extractor
Decompress GZ files in your browser — turn log.txt.gz back into log.txt instantly.
🔒 Decompressed locally.
💾 Single file, low memory.
gzip compresses one thing only
Single-file focus
GZ holds one file; this tool restores it with the correct name.
For logs & data
Perfect for server logs, dumps and HTTP payloads.
Instant
Gunzip via fflate — no server, no wait.
How it works
- 1
Drop .gz file.
- 2
See the inferred original name.
- 3
Click Download to get the decompressed file.
- 4
Done — single file, single click.
Single-stream design and the FNAME field
- A .gz wraps exactly one payload — folders must first become a tar; that is why .tar.gz exists at all.
- The optional FNAME header remembers the original filename; when present it is restored instead of invented.
- CRC32 plus length trailers verify integrity after inflate — truncation is always detected.
Frequently asked questions
What is GZ?⌄
Gzip compresses one file; it is used for logs, HTTP and as the second half of .tar.gz.
How is the original name known?⌄
From the .gz file name (log.txt.gz → log.txt) or a default if unknown.
GZ vs ZIP?⌄
ZIP holds many files; GZ holds one. For many files, use TAR.GZ.
Can it handle large logs?⌄
Yes, up to 10GB hard line, practical ~1.5GB.
Is it the same as TAR.GZ?⌄
No, GZ is one file; TAR.GZ is many files bundled then gzipped.
Do I need to install gzip?⌄
No, decompression is in-browser.
Related tools
What Is GZ?
GZ (gzip) compresses a single file, not an archive of many. It is the engine behind .tar.gz, HTTP compression and log rotation (access.log.gz). Decompressing restores the original file with its original name inferred from the archive name.
Single file, not an archive
Unlike ZIP, GZ holds one file. This tool shows the inferred name (log.txt.gz → log.txt) and lets you download it. If the original name cannot be inferred, you get “extracted file”.
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