Texel Density Checker is an add-on for managing texture resolution across 3D models. It allows users to calculate texel density for meshes based on varying texture sizes, including custom constraints and non-square dimensions.

The tool provides options to rescale UV maps to achieve a specific target density or copy density values directly from one object to another. Additionally, users can select faces that share the same density or UV space and visualize density data directly on models using built-in checker materials or vertex colors.