with Texel Density Checker you can:
Calculate Texel Density for model for different texture size (512px - 4096px) or with custom size and aspect ratio
Rescale UV for getting texel density what you want
Use Interactive Checker Material
Copy TD from Active to Selected objects
Vizualize Texel Density with Vertex Colors
Visualize UV Islands with Random Vertex Colors
Texel Density Checker simple for use. You need select your mesh and texture size and just click button.
Texel Density Checker 3.3.1 (Blender 2.91 ang Higher) (04 Dec, 2021):
[Fix] Blender 3.0 Support
[Improvement] Closest Interpolation for TD Material's Grid Texture
Texel Density Checker 3.3 (Blender 2.91 ang Higher) (05 Nov, 2021):
[Fix] Incorrect TD if selected Non-Mesh Objects
[Fix] Face Maps are Empty after using "Assign Checker Material"
[New][Bake TD to VC] Automatic Min/Max TD Values from Selected Objects
[New][Set TD] Presets "Half" and "Double" (works better with Average Set Method)
Texel Density Checker 3.2.2 (Blender 2.91 ang Higher) (13 Dec, 2020):
[Fix] Incorrect Calculation of average TD when islands have different TD
I hope this addon will be very useful for somebody!
you can pay what you want if you want support to me.