But the tool kept secrets. Once, while inspecting the source, she noticed a compact function tucked behind preprocessor guards: an alternate entropy coder with a peculiar constant. It read like an intentional wink rather than malice. She poked it into being—clang -DALT_CODER—and re-ran benchmarks. Compression improved another five percent.
Ensure the drive has at least 50% free space of the original file size during the compression process. Alternatives: WUA (Wii U Archive)
After compilation, run:
One of WudCompress’s strongest features is that it is . The original WUD image can be perfectly reconstructed from the WUX file. This is different from tools like WiiScrubber , which modify the data. Therefore, you can safely store your game collection as WUX files without any risk of data degradation, and decompress them whenever needed.
Navigate to a trusted open-source repository or the official GitHub page hosting the Wudcompress binaries. wudcompress install
Open your browser and search for "wudcompress v0.4.1" (the latest stable version as of this writing) or navigate to the official GitHub repository (typically maintained by Falo ).
Simply click and drag your .wud file directly onto the WudCompress.exe file.
Under "System Variables," find , select it, and click "Edit" .
Open a terminal in that folder and type: wudcompress.exe your_game_name.wud . 4. Verification and Cleanup But the tool kept secrets
The original Windows code uses Microsoft‑specific functions ( _fseeki64 , _ftelli64 , stricmp ). The patched source replaces these with their POSIX equivalents ( fseeko , ftello , strcasecmp ). Compile with the following command:
When dumping physical Wii U discs using homebrew tools like WUDD, the system creates a 1:1 image. A small indie game and an open-world title both consume exactly 23.3 GB on a storage drive.
Create a dedicated tools folder on your system drive (e.g., C:\WiiU_Tools\WudCompress ).
: The compressed .wux files work perfectly with Cemu, so you won't lose any functionality. Zero Learning Curve : It is a simple "drag and drop" tool. How to Install and Use WudCompress Alternatives: WUA (Wii U Archive) After compilation, run:
I tried logrotate . I tried gzip . I even tried politely asking the service owner to "maybe tone it down" (he replied with a GIF of a dumpster fire).
You can now safely delete the original 23 GB .wud file to reclaim space. Key Comparison: WUD vs. WUX WUD (Uncompressed) WUX (Compressed) Always 23.3 GB 2 GB – 20 GB (Variable) Format Raw Disc Image Compressed Disc Image Cemu Support Full Support Full Support Loading Speed Slightly slower (CPU decompresses on the fly) Troubleshooting Tips
WudCompress is a "portable" application, meaning there is no traditional installer or setup wizard.
Extract the contents into a dedicated folder, for example: C:\WiiU\WUDCompress\ .