Free TAR to GZ Converter: No Sign-up, Files Never Uploaded
This free TAR to GZ converter runs entirely on your device. You do not need an account or a login, and your files are never uploaded, so they never leave your browser.
The archive is opened, its files are read one by one, and they are packed again as GZ.
This pair runs on code that is already in the page, so there is no extra engine to download.
- Free
- No sign-up
- Never uploaded
- No watermark
Your files are converted on your device and never uploaded.
How to convert
- Add your TAR files by dragging them onto the converter or by using the file picker.
- Check that GZ is the selected target format; it is already chosen on this page.
- Open the options if you want to change compression level, or keep the defaults.
- Press Convert and watch the progress shown for each file.
- Download each result, or take them all together as one ZIP when you converted several files.
Features
- Reads .tar and writes .gz.
- Free, with no watermark added to the result.
- No sign-up and no login.
- Your files are never uploaded and never leave your device.
- Batch conversion with a ZIP download for several results.
- The input is recognised by its content, not only by its file name.
Supported formats
About the formats
About TAR
Tape Archive: bundles files together without compressing them.
Usually combined with gzip, bzip2 or xz.
About GZ
gzip compresses a single file or stream, and is the compression behind .tar.gz.
Fast, with a good compression ratio.
TAR vs GZ
TAR does not support transparency, and GZ does not.
TAR files use the .tar extension and GZ files use .gz, so the converted file gets a new name with the new extension.
Privacy: how it works
- Your TAR files stay on your device. The page reads each file with the browser's file API, converts it with code running in the tab, and hands the result back as a download. No upload happens, so there is no copy of your file on our servers to protect, delete or leak.
- There is nothing to sign up for and no login. The converter does not ask for an email address, and it does not need to know who you are to do its job.
- You can check the claim yourself: open your browser developer tools, watch the Network tab while a file converts, and you will see no request that carries your file.
Tips
- Check that the converted archive opens and holds the files you expect before you delete the original.
- File names with unusual characters can differ between formats, so test a copy first.
- Password-protected archives cannot be read until they are unlocked.
- Keep the original archive until you have checked the result.
- This page converts one way only; GZ files cannot be turned back into TAR here.
Frequently asked questions
Is it really free?
Yes. There is no price, no trial, no credit card and no watermark added to your results. Ulkaa Tool does the conversion with your own device, so there is no server bill to pass on to you.
Are my files uploaded?
No. Your TAR files are read and converted inside your browser and are never sent to Ulkaa or to anyone else. The result is created on your device and you save it from there.
Do I need an account?
No. There is no sign-up and no login. Open the page, add your files and convert. An Ulkaa account is not needed for anything on this tool.
Is there a file size limit?
No limit is set by us. The real limit is your device: the conversion uses your own memory and processor, so very large files can be slow or fail on a weak phone or an older computer. Close other heavy tabs and convert TAR files one at a time if a big batch struggles.
What is the difference between TAR and GZ?
TAR does not support transparency, and GZ does not. TAR files use the .tar extension and GZ files use .gz, so the converted file gets a new name with the new extension.
Can I convert many TAR files at once?
Yes. Add as many files as your device can handle. Each one is converted on its own and you can download them one by one or as a single ZIP.
Will anything be lost when I convert TAR to GZ?
The converter keeps the content of the file. Check the result once, since small differences in metadata or colour handling can happen between formats.
Can I convert GZ back to TAR?
Not on this page. This conversion goes one way. Open the GZ page to see which formats it can be converted to.