Packaging

Debug package

You can use UnrealPak.exe at Engine/Binaries/Win64 to debug/extract the .pak, .utoc, .ucas file(s).

Commands Docs

• UnrealPak.exe MyFile.pak -list
• -diff
• UnrealPak.exe MyFile.pak/.utoc -extract MyDestination

About .pak, .ucas & .utoc

Since UE5 Zen Loader the files you find in the Paks folder in your packaged build are different.

• .ucas: Content Addressable Store, it holds all of your cooked assets.
• .utoc: Table Of Contents that is used by the engine to quickly find an asset in the .ucas file.

The global file is an offline computed dependency graph for your assets. The upside to using the io store is a noticeable improvement to loading times.