Id Map Maker For Substanace Painter is a Blender add-on aimed at the ID map baking step for Substance Painter. With a single click it assigns unique colors to each selected object, and the Apply ID MAP Colors tool sets up non-overlapping materials ready for baking. Since version 1.1 you can also bake the ID map inside Blender and drag it into Substance Painter's ID map texture bake slot.
The add-on includes layout tools that arrange selected objects into a non-overlapping grid around the world origin, keeping each one distinct during baking. A Material Cleanup option removes all materials from selected objects for a fresh start, while Back to Original remembers the objects' starting positions and restores them with one click. Reset Location helps reassemble your models once the bake is done.
Clicking Bake Diffuse to Image opens a save-as-image dialog automatically. Version 1.2 works with Blender 4.5 and later, including the 5.0 series.