Grid Layout is a UV mapping add-on tailored for managing high-resolution assets with extensive UDIM requirements. It provides tools for organizing repeating objects into clean vertical columns, automatically shifting to new columns or adjacent UDIM tiles when capacity is reached. The toolset includes a stacking feature to overlay UVs for global adjustments, an UnStack tool to distribute them again, and UDIM shifting tools that respect tile limits. Additionally, it offers unified and individual scaling options for setting and sampling texel density, along with quick selection tools for entire UDIM tiles.