Decompress a .gz file into the original file locally - lossless, no upload, right in your browser.
Running locally on your device ...
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Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
A .gz file is a single file compressed with gzip. You meet it with downloaded logs, backups or datasets. This tool reverses the compression and gives you back the original file - bit-for-bit, with no quality loss.
Decompression runs entirely locally in your browser (fflate, pure JavaScript). The file name is derived from the .gz name. Nothing is uploaded - it works offline too.
Such packages appear everywhere in the Unix world: rotated server logs, scientific measurement series, exported database tables or software sources from a mirror server. A double click is far from always enough on Windows because the operating system often ignores this suffix out of the box. Here you load exactly one such item, recover the original content and spare yourself any installation of extra specialised software - just as practical on a tablet on the move as on a workplace machine without admin rights.
| Input formats | GZ |
|---|---|
| Output format | BIN |
| Batch processing | No |
| Processing | Locally in your browser (JavaScript) |
| File upload | None |
Limitations: Handles single .gz files (no .tar.gz unpacking into individual files - first gzip-decompress, then extract the TAR). Corrupt or incomplete .gz files are rejected.
No. Decompression runs entirely locally in the browser.
First decompress the .gz here (yields a .tar), then open it with "Extract TAR".
Yes, gzip is lossless - the decompressed file is bit-for-bit identical.
The name is derived from the .gz name (with the .gz suffix removed).