Checker is a node-based add-on that enables you to temporarily apply visual checker textures to your 3D models for UV inspection. It functions dynamically, allowing you to review your UV mapping without modifying or overwriting your existing material setups.

The tool includes custom color and monochrome checker sets from the Zen UV add-on, featuring various texture sizes for clear readability. It provides a filtering system to sort existing textures by resolution and aspect ratio (square or rectangular). Users can also import custom checker textures or entire libraries, and manage their UV maps directly from an integrated properties tab.