What is a .UEXP file?
UEXP holds the bulk data of an Unreal Engine asset, split from its header.
- Did you know
- Unreal splits an asset’s header and its heavy data into .uasset and .uexp.
- Splitting the header into .uasset and the payload into .uexp lets Unreal load all package headers first and fetch the heavy data only when needed.
- The .uexp companion file must keep the same name and live in the same folder as its .uasset, as neither is usable on its own.
- What Analyser reads
- Identify and read more game and emulator files: Unity asset bundles, Unreal cooked assets, CISO/CHD disc images, FMOD/Wwise sound banks, Spine skeletons and atlases, GameMaker/LDtk/TIC-80 projects, Minecraft Anvil regions, Warcraft III maps, Ren Py and RPG Maker data, extra console ROMs (Atari, PC Engine, Master System/Game Gear, WonderSwan, 3DS homebrew), xdelta/Basis patches and emulator saves and movies.
- Depth of analysis
- .UEXP is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .UEXP file
- Drag a .UEXP file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.