Mesh Cleaner is an add-on that consolidates common geometry repair operations into a single interface. It provides tools to remove duplicate vertices, convert triangulated faces to quads, and recalculate flipped normals. Additional functions include filling holes in watertight meshes, deleting loose geometry, and purging unassigned material slots. The tools are accessible through the N-panel in both Object and Edit modes, or via a single 'Quick Clean Up' command in the right-click context menu.