Addon for blender containing tools for simplifying workflow in blender weight paint mode. Useful for riggers, animators and character artist but not only.
- easy menu for applying weights to vertices - with properly working symmetry and auto normalization
- mirroring weights
- symmetrize vertex groups
- easy picking/copying vertex weights
- mixing vertex weights - add, replace, multiply.
- improved smoothing, levels - with properly working symmetry and auto normalization
Grab it from https://gumroad.com/l/weight_paint_tools
As a bonus you can also get ‘Draw Weights’ addon for displaying all vertex groups with different color. It is useful for debugging problems with vertex weights, for example if color of vertex is too dark/bright it means weights assigned to it are not properly normalized (they are too low/ too high):