Asset Preflight
Which Blender versions and systems does it work on?
Blender 4.2 LTS and newer. Tested on Blender 4.2.9 LTS and 5.1.2 on Linux. It is plain Python on Blender's own libraries, so Windows and macOS should behave the same, but they have not been tested yet.
Does it export to Unity, Unreal or Godot?
No. Version 1 checks and fixes meshes and UVs in Blender; it does not export, and it has not been tested inside any game engine. Use your usual exporter afterwards.
Will Fix UVs keep my mirrored or intentionally overlapping UVs?
No. Fix UVs repacks the layout, so islands that overlap on purpose are separated. Leave those objects out of the selection, or press Ctrl+Z to undo.