UEx is an export add-on designed to streamline the transfer of 3D assets from Blender to Unreal Engine. It allows users to batch export multiple objects and animations, generating a separate FBX file for each item without requiring strict collection hierarchies. The tool includes utilities to automatically adjust object or world origins and update viewport clipping distances when modifying Blender's unit scale.

The add-on integrates directly with Unreal Engine's naming conventions to handle complex asset requirements. It automatically processes and exports custom collision shapes, level of detail (LOD) meshes, and sockets alongside the main model. Users can group objects into selection sets for quick repetitive exports and choose whether to export LODs as individual files or combine them into a single file.