Turn ZIP files into TAR.GZ in a couple of clicks. ZIP is the universal compressed archive; TAR.GZ is the standard Unix compressed bundle. Files are unpacked and repacked; their contents are unchanged.
Drop your files here
ZIP files (.zip) · up to 500 MB each
or paste files from your clipboard
Ready when you are
Drop a ZIP file above and FileTools360 will turn it into TAR.GZ — right here on your device, without uploading anything.
Drag them onto the drop area, choose them from your device, or paste them from your clipboard. You can queue several at once. Nothing is sent anywhere — the file stays on this device.
The defaults suit most people. Open Advanced to control the output settings.
Press Convert. Everything happens on your own device — nothing is uploaded. Download files one by one, or grab them all as a ZIP.
Privacy, in plain words
What “uploaded” normally means. On most online converters, pressing the button copies your file across the internet onto a computer owned by that website. That copy is what the word “upload” means, and it is the part nobody explains.
What happens instead. This site does not do it. There is no server here that receives files, so your ZIP file is read, converted and handed back by the browser you are using right now. It never travels — so there is no copy to store, read, leak or hand over.
Check it yourself in ten seconds
Turn off your Wi-Fi after this page has loaded, then convert a file anyway. It still works, because everything needed is already on your device.
The longer explanation of how this works, and the full detail of what is and is not stored on the privacy page.
An archive is a container, so its contents are whatever you were trying to keep together — which is usually everything above at once. It matters more than it sounds, because of what archives usually are:
Photo libraries
thousands of images with their locations attached
Document bundles
legal or medical files collected for one matter
Source code
intellectual property, and occasionally hard-coded secrets
Backups
by definition, the things you could least afford to lose
A file that is never sent cannot be kept, leaked, subpoenaed or used to train anything. That is a property of how this works, not a promise about how carefully it is run.
ZIP bundles multiple files into one and compresses them. Its indispensable property is that every operating system can open it with no extra software.
A .tar.gz is a TAR archive that has been compressed with gzip — bundling and compression handled by two separate, composable tools.
The two formats solve different problems, which is why converting between them involves trade-offs rather than a straight upgrade.
| Property | Source | Target |
|---|---|---|
| Compression | Lossless | Lossless |
| Introduced | 1989 | — |
| Browser support | Built into every operating system. | Native on macOS and Linux. |
People make this switch when they run into the limits of ZIP: maximum compression matters more than compatibility. TAR.GZ is the better fit when distributing or backing up on Unix-like systems.
The content is not re-encoded — it is moved into a different container, so quality is unchanged and the conversion is quick regardless of file size. What may not survive is anything belonging to the ZIP container rather than to the content itself, since TAR.GZ does not necessarily have an equivalent.
The TARGZ came out about the same size as the file that went in.
| Sample | ZIP in | TARGZ out | Change |
|---|---|---|---|
| An easy clipThe compressible end of the range — a clean tone, or a moving test pattern — where a codec does its best work. | 6.6 KB | 6.6 KB | −1% |
| A hard clipThe other end — pink noise, or dense video grain. Close to incompressible by design, and the worst case for every codec. | 330 KB | 330 KB | −0% |
Produced by this site's own converter. The same code that runs in your browser, at the same default settings, so these are the bytes you would download.
Samples are generated from a fixed seed rather than taken from real photographs or documents, so the corpus is reproducible and carries no licensing question — and so the numbers predict the shape of your result rather than its exact size. Measured 2026-10-01. The method, and the command that regenerates every figure on this page, are on the how it works page.
Source
The universal compressed archive.
Target
The standard Unix compressed bundle.
Unpacks the source and writes a fresh gzip-compressed tarball. Contents are byte-identical; permissions and symlinks are not preserved.
Good to know
Runs entirely in your browser
527 converters and tools65 file formatsnothing ever uploaded.