LZH to WIM Converter
Processing entirely on your device — large files may take a moment.
LHA/LZH Archive and Windows Imaging Format exist for different jobs: LZH (LHA) is the archive format of the Japanese PC-98 era and Amiga scene — still attached to old downloads and doujin material. Extracting WIM to ZIP exposes the files inside Windows images without deployment tools.
This converter runs entirely in your browser using WebAssembly — your files never leave your device, nothing is uploaded, and there are no watermarks, sign-ups or queues. Drop in several files at once to convert them as a batch.
How LZH compares to WIM
| LZH | WIM | |
|---|---|---|
| Compression | LZ (LHA variants) | XPRESS/LZX variants |
| Encryption | None | None (split WIMs exist) |
| Bundling | Multi-file | Filesystem image, multiple images per file |
| Best for | Retro software archives | Windows deployment media |
How to convert LZH to WIM
- 1
Select your files
Drag & drop your LZH 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 WIM". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted WIM file individually, or grab everything at once as a ZIP archive.
About the LZH format
LZH (also LHA) is the archive format that ruled Japanese PCs in the 8.3-filename era and the Amiga scene elsewhere. It compresses with a simple LZ scheme, predates ZIP's dominance, and still shows up attached to retro software, doujin archives and old BBS downloads.
No modern OS opens it natively, and LHA tools are niche. Converting LZH to ZIP is the one-step rescue: same files, universal container, no retro software hunt required.
+ Strengths
- ✓The retro Japanese/Amiga archive standard
- ✓Simple, well-documented compression
! Limitations
- −No native OS support today
- −Weak compression by modern standards
About the WIM format
WIM (Windows Imaging Format) is how Microsoft ships Windows itself: the install media and deployment images are WIM files, holding a complete filesystem snapshot with single-instancing (identical files stored once). It is Windows' answer to tar — file-based rather than sector-based.
Opening one without deployment tooling (DISM, 7-Zip on Windows) is awkward. Extracting WIM to ZIP exposes the files inside — drivers, scripts, provisioned apps — on any system, no Windows required.
+ Strengths
- ✓Windows' native image format
- ✓Single-instancing deduplicates identical files
! Limitations
- −Opaque without Microsoft tooling
- −Files inside may be Windows-locked
Why convert LZH to WIM?
Converting makes sense where the strengths of WIM meet what LZH cannot give you. Windows' native image format Meanwhile No native OS support today One pass through the converter above puts your file on the right side of that trade-off.
Frequently asked questions
Is this LZH to WIM 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 LZH to WIM?
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 LZH file.