Are my GZ files uploaded anywhere?

Yes — this conversion needs software that cannot run in a browser, so the file is uploaded over an encrypted connection. It is deleted as soon as the job finishes, and the result is removed after 60 minutes.

Is converting GZ to XZ free?

The free plan covers three server conversions a day, for files up to 25 MB. There is no watermark on the result.

Does converting GZ to XZ lose quality?

No. XZ stores the same content without discarding anything, so the result is identical in quality to the original. The files come out byte for byte. What does not survive is anything the container held about them rather than in them — a password, and on some formats the original permissions and timestamps.

Do I need to install anything to open XZ files?

No. The conversion runs on our side and gives you a finished XZ file; opening it needs whatever software normally handles XZ Archive.

GZtoXZ

Convert GZ to XZ

Up to 3 files at once, 100 with Pro. Mixed formats are fine.

You can convert GZ to XZ free and without an account: drop the file above and the XZ is ready to download in a second or two. The file is sent over an encrypted connection, converted on our server and deleted as soon as the job finishes.

What GZ and XZ are for

Compresses a single file. Combined with TAR it becomes the standard Unix archive.

The strongest of the common Unix compressors. Standard for source and package downloads.

How to convert GZ to XZ

Drop your GZ file onto this page, or click to pick one.
Choose XZ as the target and start the conversion.
Download the finished XZ file.

GZ vs XZ: what changes

GZ compared with XZ
	GZ	XZ
Full name	Gzip Archive	XZ Archive
File extension	.gz, .tgz	.xz
Media type	application/gzip	application/x-xz
Compression	Lossless — nothing is discarded	Lossless — nothing is discarded

Quality: Nothing is lost. The result holds exactly the same picture, text or data as the original.
Where it runs: This conversion runs on our server, because it needs software a browser cannot run.
What can be lost: The files come out byte for byte. What does not survive is anything the container held about them rather than in them — a password, and on some formats the original permissions and timestamps.

GZ to XZ: common questions

Are my GZ files uploaded anywhere?: Yes — this conversion needs software that cannot run in a browser, so the file is uploaded over an encrypted connection. It is deleted as soon as the job finishes, and the result is removed after 60 minutes.
Is converting GZ to XZ free?: The free plan covers three server conversions a day, for files up to 25 MB. There is no watermark on the result.
Does converting GZ to XZ lose quality?: No. XZ stores the same content without discarding anything, so the result is identical in quality to the original. The files come out byte for byte. What does not survive is anything the container held about them rather than in them — a password, and on some formats the original permissions and timestamps.
Do I need to install anything to open XZ files?: No. The conversion runs on our side and gives you a finished XZ file; opening it needs whatever software normally handles XZ Archive.