S3M to TAR.XZ Converter
Processing entirely on your device — large files may take a moment.
ScreamTracker 3 Module and XZ-compressed Tar exist for different jobs: S3M is the ScreamTracker 3 module format — the sound of DOS-era demoscene and shareware-game soundtracks. Produce a TAR.XZ for the smallest possible release artifact, or to match the format a build system expects.
Because the whole conversion happens on your device, it is instant, unlimited and genuinely private — no accounts, no watermarks, no files on anyone's server. Multiple files are converted in one go.
How to convert S3M to TAR.XZ
- 1
Select your files
Select your S3M file — it never leaves your device.
- 2
Convert instantly
The engine packs the file, byte for byte, into a TAR.XZ container — no re-encoding, no quality change.
- 3
Download results
Download the finished TAR.XZ archive.
About the S3M format
S3M is ScreamTracker 3's module format — the 1994 standard that carried PC demo music past the AdLib's FM chip into sampled instruments, with PCM samples, FM instruments or both in one file. Half the classic DOS game soundtracks you remember were S3Ms.
Conversion renders the module through the tracker engine to MP3 or WAV — the FM-vs-sample mix is resolved exactly the way the composer intended, frozen into a universally playable waveform.
+Strengths
- ✓FM + PCM hybrid instruments
- ✓Iconic DOS-era game soundtracks
- ✓Well-specified, stable format
!Limitations
- −Pattern limits of 1994
- −FM playback differs across engines
- −Adlib-specific quirks may differ
About the TAR.XZ format
TAR.XZ pairs the tar container with XZ (LZMA2) compression — the highest-ratio member of the tar family and the de-facto release format of modern Linux distributions. The same source tree that lands 5% smaller than TAR.BZ2 and 20% smaller than TAR.GZ is why kernel.org and GNU mirrors standardised on it.
The trade is CPU time: XZ compresses slow (dictionary sizes up to 64 MB) but decompresses fast, which makes it ideal for one-time releases that get downloaded millions of times. When you need speed instead, TAR.GZ or TAR.ZSTD are the neighbouring picks.
+Strengths
- ✓Best compression ratio of the tar family
- ✓Standard release artifact of Linux distros
- ✓Fast decompression despite slow compression
!Limitations
- −Compression is CPU-heavy and single-threaded by default
- −Larger toolchain footprint than gzip on tiny systems
Why convert S3M to TAR.XZ?
There is a concrete reason this conversion exists: Pattern limits of 1994 TAR.XZ sidesteps that — Best compression ratio of the tar family If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this S3M to TAR.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.
Is there a file size limit for S3M to TAR.XZ?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Can I convert a whole folder of S3M files?
You can select many files at once and they are processed in a single batch. Output files land in one ZIP download when there is more than one result.
Will converting S3M to TAR.XZ reduce audio quality?
If TAR.XZ is lossless, the output contains everything the S3M file contains — no further loss is added. If TAR.XZ is lossy, one recompression pass is unavoidable; the quality slider controls how much. Loss that already happened in the source file can never be undone by converting.