Xtool Razor12911 Compression Settings Best Ratio

For the absolute smallest file size, XTool is rarely used alone. It is typically the first step in a "chain" of tools. The most effective combination used by experts at forums like FileForums is:

arc a -ep1 -r -ed -m=rep:$500000000+delta:$500000000+lzma:max:256m:bt4:273 -mt=on archive.arc *

Setting the Record: To get the best ratio, you must set a massive dictionary size (e.g., -md=1g for 1GB). This allows the compressor to look further back in the data stream to find matching patterns. However, this requires the end-user to have that much RAM free to unpack the file. If you set it to 2GB, anyone with less than 2GB of free RAM will crash. xtool razor12911 compression settings best ratio

Use a small folder (e.g., 500 MB of mixed files) to test:

| Compression Setting | Average File Size | Compression Ratio | Data Integrity | | --- | --- | --- | --- | | Low Compression (10%) | 1024 KB | 1.2:1 | 99.9% | | Medium Compression (30%) | 512 KB | 2.5:1 | 99.5% | | High Compression (50%) | 256 KB | 4.5:1 | 98.5% | | Very High Compression (70%) | 128 KB | 8.1:1 | 95.2% | | Auto Compression (Dynamic) | 384 KB | 3.2:1 | 99.2% | For the absolute smallest file size, XTool is

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Handles the most common compression used in games (UE4, Unity). xtool:png This allows the compressor to look further back

The "best ratio" isn't a magic button; it is a calculated risk. The settings favored by the Razor12911 community rely on the premise that

Here’s a helpful guide for getting the with xTool Razor12911 (a well-known repack tool using FreeArc + additional compression engines).