: The tool can identify and remove duplicated data streams during the precompression phase to further improve the final compression ratio.

: It supports a wide array of internal and external codecs used in modern gaming, including: Standard : zlib, flac, and packjpg.

The is a high-performance data precompression and preprocessing tool primarily used in the game repacking community. Unlike standard compression programs that simply shrink files, Xtool acts as a "pre-processor" that identifies and decompresses specific data streams (like zlib, Oodle, or LZ4) within larger files, making them more receptive to final heavy compression by tools like 7-Zip or Precomp. Key Features and Technical Capabilities

: If a stream cannot be restored perfectly, it utilizes xdelta or Zstd patching to ensure the data remains lossless. Usage in Game Repacking

Xtool is widely considered safe and is a legitimate tool used for data optimization. Although the original developer, , archived the official GitHub repository in late 2023, the tool remains available through community mirrors and archives. It is primarily a command-line tool, though it does feature a basic GUI mode when certain plugins are present. Xtool - Some tool repackers like to use - ENCODE.SU Forum