DICOM to XZ Converter
Processing entirely on your device — large files may take a moment.
Unpack XZ into ZIP/TAR for tools that cannot read LZMA2. If your files are still in DICOM format, this page is the shortcut: DICOM is the ISO standard for medical imaging — CT/MRI slices carry patient metadata, window/level display parameters and pixel data in one file. Only uncompressed transfer syntaxes are supported.
iLoveConverter processes everything locally on your computer, which makes it private and fast: no upload wait, no server storage, no limits. Add as many files as you like — batch conversion is built in.
How to convert DICOM to XZ
- 1
Select your files
Select your DICOM file.
- 2
Convert instantly
The file bytes are gzip-compressed in place — the same archive your server or build tool produces, made locally.
- 3
Download results
Download the .gz file — ready to upload, serve or attach.
About the DICOM format
DICOM is the ISO standard for medical imaging — every CT/MRI slice bundles patient metadata, display parameters (window centre/width) and pixel data. The converter renders uncompressed transfer syntaxes through proper window/level mapping, exactly as a workstation would show it.
Patient and study metadata (name, ID, modality, date) are exported alongside the image as a text sidecar. Compressed transfer syntaxes (JPEG inside DICOM) are out of scope and reported clearly.
+Strengths
- ✓Correct window/level greyscale mapping
- ✓Metadata exported as a text sidecar
- ✓MONOCHROME1/2, RGB and rescale handled
!Limitations
- −Compressed transfer syntaxes unsupported
- −Multi-frame volumes take the first frame
- −Huge CT stacks render slice by slice
About the XZ format
XZ wraps the LZMA2 algorithm: the best ratio of the common Unix compressors, which is why distribution packages and source releases pick it when bandwidth matters more than CPU.
Windows Explorer and many cross-platform tools cannot open it — unpacking to ZIP or TAR makes the payload portable.
+Strengths
- ✓Highest common ratio
- ✓Standard for Linux packages
- ✓Integrity checks built in
!Limitations
- −Memory-hungry at high settings
- −Sparse support outside Linux
Why convert DICOM to XZ?
There is a concrete reason this conversion exists: Compressed transfer syntaxes unsupported XZ sidesteps that — Highest common ratio If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this DICOM to XZ converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Will I lose quality converting DICOM to XZ?
No — XZ is a lossless format, so every pixel of the converted image matches your original DICOM file. You can also adjust the quality/size balance before converting when the target format supports compression.
Is there a size limit for archive conversion?
There is no upload cap because nothing is uploaded — the practical limit is your device memory. A few hundred megabytes of unpacked content works comfortably on a modern computer.
Are the files inside my DICOM archive modified?
No. Contents are unpacked in memory and repacked into XZ byte-for-byte — the conversion changes the container, never the files inside it.