modeling - Is there an unsubdivide function in Blender? - Blender Stack Exchange
How to un-subdivide or undo subdivisions in Blender - Artisticrender.com
Adaptive edge decimation and a modifier for curves — Right-Click Select
unsubdivide blender multires — polycount
Daily Blender Tip 184: Unsubdivide and poke faces - BlenderNation
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Subdivide — Blender Manual
How to un-subdivide or undo subdivisions in Blender - Artisticrender.com
Blender Full Training - Episode 28 - Decimate Modifier with Un-Subdivide & Planner, Blender Tutorial | Blender tutorial, Tutorial, Planner
Imported high poly mesh from zbrush. When I unsubdivide using multires modifier, at the highest subdiv levevl, some vertices are at the origin point. : r/blenderhelp