CAB to TBZ2 Converter
Processing entirely on your device — large files may take a moment.
Windows Cabinet Archive and Bzip2ed TAR (TBZ2) exist for different jobs: CAB is Microsoft's installer cabinet format — drivers, Windows updates and legacy installers arrive as CAB files. Convert TBZ2 exactly like TAR.BZ2.
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 CAB compares to TBZ2
| CAB | TBZ2 | |
|---|---|---|
| Compression | MSZIP / LZX | Bzip2 (block-sorting) |
| Encryption | None | None |
| Bundling | Multi-file with folders | tar container, single stream |
| Best for | Drivers and Windows updates | Legacy release artifacts |
How to convert CAB to TBZ2
- 1
Select your files
Drag & drop your CAB files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to TBZ2". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted TBZ2 file individually, or grab everything at once as a ZIP archive.
About the CAB format
CAB (Cabinet) is Microsoft's own archive format, built for software distribution: Windows update packages, device drivers and legacy installers arrive as CAB files. It supports MSZIP, Quantum and LZX compression, and Windows Explorer actually opens it — on Windows.
Everywhere else it is a locked box. Converting CAB to ZIP makes driver payloads and update contents readable on macOS, Linux and phones — useful when you need a driver file on a machine that cannot run the installer.
+ Strengths
- ✓Native to Windows software distribution
- ✓Efficient LZX compression for its era
! Limitations
- −Windows-centric — opaque elsewhere
- −No encryption or recovery features
About the TBZ2 format
TAR.BZ2 pairs the tar container with bzip2 compression — the classic release artifact of the 2000s Unix world. Bzip2's block-sorting algorithm compresses text and source trees noticeably tighter than gzip, which is why distribution mirrors and source releases favoured it for years.
Today it has largely ceded the top spot to TAR.XZ (smaller) and tar.gz (faster), but countless build scripts, mirrors and legacy toolchains still expect the exact .tar.bz2 artifact — and producing it is a matter of running the tar through a bzip2 encoder.
+ Strengths
- ✓Tighter than gzip on text and source trees
- ✓Classic, universally supported on Unix-like systems
- ✓Deterministic, well-understood artifact for releases
! Limitations
- −Slow compression compared to gzip/zstd
- −Larger than TAR.XZ for the same content
- −Single stream — no random file access
Why convert CAB to TBZ2?
There is a concrete reason this conversion exists: Windows-centric — opaque elsewhere TBZ2 sidesteps that — Tighter than gzip on text and source trees If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this CAB to TBZ2 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 CAB to TBZ2?
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.
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.
What about folders and directory structure?
The full directory tree is preserved: folders stay folders, and deep paths arrive exactly as they were packed in the CAB file.