What's this?

A blender addon used for removing empty vertex groups and bones with no corresponding vertex groups.

Install

• Download from github release
• Then just install the .zip file in the same way as other blender addons
• NOTE: You need to enable Setting - Interface - Display - Develop Extras to use this plugin. (thanks for @minitiv)

Usage

Remove unused vertex groups

1. Select some mesh objects whose vertex groups will be checked.
2. F3 - Remove Unused VeretxGroups
3. The empty vertex groups on the mesh objects should have been removed.

For example (in demo.blend):

• Vertex Group Using is being used
  • 
• Vertex Group Unused is empty
  • 
• Select Cylinder
• Press F3
• Type Remove Unused VeretxGroups
  • 
• Vertex Group Unused was removed
  • 
• Log can be found in Window - Toggle System Console
  • 

Remove unused bones

1. Select some mesh objects whose vertex groups will be checked.
2. Ctrl+Click select an armature object whose bone will be removed. (Make sure the armature is the active object)
3. F3 - Remove Unused Bones
4. The bones on the armature object which are not referred by the vertex groups of mesh objects should have been removed.

For example (in demo.blend):

• Bone Using has the corresponding vertex group Using in the Cylinder
  • 
• Bone UnusedBone has no corresponding vertex group in the Cylinder
  • 
• Select Cylinder
• CTRL+Click Select Armature
• Press F3
• Type Remove Unused Bone
  • 
• Bone UnusedBone was removed
  • 
• Log can be found in Window - Toggle System Console
  •