For general-purpose high-ratio pre-compression, use a command similar to: xtool precomp -mkraken -c128mb -t100p [input_file] [output_file]
~42% smaller than 7z (ultra LZMA2) on a 12GB game folder. Decompression is slow but fine for repack purposes. xtool by razor12911 compression settings best ratio
Explicitly adding the png scanner helps handle image assets that standard pre-compression might miss. Key Command Line Settings Key Command Line Settings Achieving the best compression
Achieving the best compression ratio with XTool (created by Razor12911) generally involves a multi-stage "chaining" process where data is first pre-processed to an uncompressed state and then re-compressed using high-ratio algorithms. For most modern games, the most effective configuration for a maximum ratio is typically or XTool + SREP + LZMA2 . Optimized Compression Chains If disk space is your only metric of
The pursuit of the best ratio comes at a cost: System Resources.
If disk space is your only metric of success, XTool by Razor12911 is the undisputed champion of the compression scene. While it demands patience, RAM, and a steep learning curve, the results in "Best Ratio" mode are unmatched by traditional archivers like 7-Zip or WinRAR. It is an essential tool for game repackers and digital archivists.
: Always enable "Solid" mode in your final archiver (like WinRAR or 7-Zip) to treat all files as a single continuous stream.