CHM to TBZ2 Converter
Processing entirely on your device — large files may take a moment.
CHM is Microsoft's compiled help format: HTML topics, images and an index compressed into one legacy-but-everywhere file. Old software manuals, ebooks and documentation still ship as CHM. Convert TBZ2 exactly like TAR.BZ2.
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 CHM compares to TBZ2
| CHM | TBZ2 | |
|---|---|---|
| Compression | LZX | Bzip2 (block-sorting) |
| Encryption | None | None |
| Bundling | HTML topics + index in one file | tar container, single stream |
| Best for | Legacy software manuals | Legacy release artifacts |
How to convert CHM to TBZ2
- 1
Select your files
Drag & drop your CHM 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 CHM format
CHM (Compiled HTML Help) is Microsoft's format for bundling HTML topics, images and a searchable index into one file. An entire generation of software manuals, programming references and even novels shipped as CHM — and modern Windows no longer renders it comfortably.
Extracting a CHM gives you back the raw HTML topics and images: open them in any browser, convert them onward to PDF or EPUB, or migrate the content into a modern documentation system. The help tree becomes regular files.
+ Strengths
- ✓Unlocks decades of locked-in documentation
- ✓Topics come out as clean, standalone HTML
- ✓No deprecated viewer required
! Limitations
- −Index and search metadata do not convert
- −Topic filenames are often opaque codes
- −Some CHM files use encodings that need care
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 CHM to TBZ2?
Converting makes sense where the strengths of TBZ2 meet what CHM cannot give you. Tighter than gzip on text and source trees Meanwhile Index and search metadata do not convert One pass through the converter above puts your file on the right side of that trade-off.
Frequently asked questions
Is this CHM 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 CHM 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.
Are the files inside my CHM archive modified?
No. Contents are unpacked in memory and repacked into TBZ2 byte-for-byte — the conversion changes the container, never the files inside it.