Pick the right Meshy export for engines, web, AR, and printers without conversion spaghetti.
Realtime & web
GLB for three.js/web viewers; FBX remains common in Unreal/Unity character pipelines; USDZ for Apple AR.
STL is ubiquitous; 3MF keeps more structure and color. OBJ is fine but watch unit chaos.
DCC continuity
BLEND or FBX when you’ll keep editing in Blender/Maya.
One source of truth
Archive a master GLB/FBX even if you distribute derivatives.