IO Store Support
Repak X fully supports Unreal Engine's IO Store format alongside Legacy PAK files.
What is IO Store?
IO Store (.utoc / .ucas) is Unreal Engine's modern asset packaging format, offering better performance and loading times compared to Legacy PAK files.
Legacy PAK vs IO Store
| Feature | Legacy PAK | IO Store |
|---|---|---|
| Format | .pak | .utoc / .ucas |
| Compression | Optional | Oodle (recommended) |
| Performance | Standard | Optimized |
Oodle Compression
IO Store bundles can be compressed with Oodle compression to reduce file size while maintaining fast load times.