"xTool is basically magic for data compression. It’s the backbone of most high-quality repacks you see today."
The raw performance of XTool is best illustrated through the developer's own benchmarks. In a test, a 937 MB file from Grand Theft Auto V was run through XTool in a precompression stage, resulting in a intermediate file. While that seems counterintuitive, this expanded data is much more susceptible to high-efficiency compression. When this data was then compressed with 7-Zip's LZMA2 algorithm, it was drastically reduced to a final size of just 591 MB . This demonstrates XTool's ability to prepare data so that a standard compressor can achieve extraordinary results.
The author was also inspired by the now‑abandoned project, which he believed could have been a major advancement in compression technology. XTool was designed to fill that gap and push the boundaries of what is possible in high‑performance repacking.
: It includes options like memory caching and "depth" scanning to optimize speed while managing high memory requirements for large data chunks. xtool library by razor12911 work
It supports a wide range of industry-standard codecs, including: Oodle: Frequently used in modern AAA titles.
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
What distinguishes Razor12911’s work from its predecessors, such as the classic Precomp tool, is its sheer efficiency. Recognizing that data processing is often a bottleneck, xtool was built to maximize modern hardware. While older tools might leave a user’s 16-thread processor largely idle, xtool engages every available core, dramatically reducing the time required to process tens of gigabytes of data. It also includes advanced features like stream deduplication, which ensures that identical data patterns across different files are only stored once, further shaving megabytes off the final package. "xTool is basically magic for data compression
This command processes an image file using PNG and preflate codecs, with a detection depth of 1. For full repacks, repackers often use more complex invocations:
: During client-side installation, the process reverses. The xtool.exe binary runs locally to repack the streams exactly as the developer intended. Technical Performance and Benchmarks
During installation, the script runs the decode command to restore the original proprietary compression so the game can read it. ⚠️ Essential Tips While that seems counterintuitive, this expanded data is
Once a stream is discovered (for example, a Zlib-compressed texture stream), XTool decodes it back into its within a temporary buffer. Uncompressed data is highly repetitive, containing easily recognizable patterns and long stretches of redundant code. 3. Stream Deduplication and Reassignment
Always include the specific xtool.exe version in your final repack, as different versions may not be cross-compatible during decoding.
Although razor12911 once declared the project “no longer in development,” he later revived it, citing three new motivations: to help users analyse games and determine the best compression methods.
Unlike standard compression tools like 7-Zip or WinRAR that simply group and shrink files, xtool focuses on .