Usmar UV provides a suite of tools for managing and generating UV maps in Blender. The add-on simplifies workflows with utilities for renaming render maps across selected objects, merging maps, adjusting stack indices, and copying or pasting UV maps between objects or specific islands in Edit Mode. Additional layout and editing features include tools for packing, fitting, rescaling, straightening, alignment, sorting, snapping, and space distribution. The add-on supports multi-object workflows and includes dedicated pie menus for quick selections, selection modes, and stretch display, alongside utilities for handling boundary and mirror seams.