Smart Apply Scale: Rig & Animation Fixer

If you scale your rig in Object mode, and then apply the scale, this may work… unless you already have an animation for that rig, in which case the location curves won’t be rescaled and your character will now either move too much or too little. In other words the

Smart Apply Scale: Rig & Animation Fixer is a Blender addon that solves this problem by also scaling the animation curves according to the new scale of your rig.