Extract a GZIP File
Decompress a .gz file, with decompression bomb protection.
Fill in the form and press “Extract” to see the result here.
How to use it
- 1Select your file, or drag and drop it onto the upload area.
- 2Adjust the options if you need something other than the defaults.
- 3Press the button. Everything happens on your device.
- 4Download the result.
About the Extract a GZIP File
Output is refused if it would expand beyond the in-browser limit or exceeds 250 times the compressed size - the signature of a decompression bomb, where a few kilobytes expand to gigabytes.
The type of the extracted content is detected from its leading bytes, so a .tar.gz is recognised and you are told to run the TAR extractor next.
Questions people ask
Is it safe to open an archive from someone else here?
Extraction is defended against the two standard attacks: entries whose paths try to escape the extraction folder are refused outright, and entries that expand to hundreds of times their stored size are refused as decompression bombs. Nothing is executed, and nothing is uploaded. It still cannot tell you whether the files inside are malicious.
Is your file uploaded to a server?
No. This tool runs entirely in your browser using standard web APIs, so your file never leaves your device. You can confirm it by opening your browser's network panel while the tool runs, or by disconnecting from the internet after the page has loaded.
Is it free, and do I need an account?
Yes, it is free, and there is no account, no sign-up and no watermark on the result. The project is funded by optional donations.