: It temporarily "unpacks" these blocks. This makes the overall data size larger initially but much easier for final compressors (like 7-Zip or FreeArc) to shrink.
: It features universal scanners for common formats, including a jojpeg codec for images and scanners for lz4f and zstd streams. Usage in Game Repacks
: XTool scans game archives looking for internal signatures of data compression codecs (e.g., detecting standard Zlib or Oodle blocks). xtool library by razor12911 work
[Compressed Game Archive] │ ▼ (xtool precomp mode) [Decompressed Raw Stream] ──► [Standard LZMA2/SREP Compression] ──► [Tiny Setup File] │ │ └─────────────────── (Installer Deployment) ───────────────────────┘ │ ▼ (xtool decode mode) [Original Game File]
To bypass this hurdle, modern repackers use a method called : : It temporarily "unpacks" these blocks
After XTool processes the files into a highly predictable stream of raw data, it hands the output over to heavy-duty compression tools like and LZMA2/LOLZ . Because XTool has exposed all the hidden patterns, these tools can achieve massive size reductions—frequently cutting down game installation sizes by 50% to 70%. Key Technical Features of XTool
: Because reconstructing Oodle or Zlib structures requires multi-threaded calculation loops, it will intentionally max out system hardware to complete the installation as quickly as possible. Usage in Game Repacks : XTool scans game
Potential future updates may include:
Instead of compressing an already compressed file (which yields little to no size reduction), XTool intercepts the data, decompresses it temporarily so the compression algorithm can analyze the raw structure, and then repacks it. When the user installs the game, XTool reverses this process, ensuring the original files are restored perfectly.
While tools like Precomp have been around for a long time, xTool was built with modern, large-scale data and high-performance computing in mind. It serves as a specialized tool for reducing game file sizes by optimizing how data is stored, without changing the functional outcome of the game files. How Does xTool Work?
Find the from the official GitHub repository.