UV-Packer automatically redistributes all UV charts in a UV map for
optimal fit. Do you often find yourself spending a lot of time to
rearrange charts generated by pelting or do you need to modify UV maps
because the proportions of the UV space or the size of the required
padding have changed?
UV-Packer does it with a single click of a button.
It can also rescale the separate UV charts depending on the mesh
surface area to even out the pixel distribution across different parts
of the mesh.