From the developers of TextureGenerator-Online brings you a tool that allows the user to turn textures or height map to Normal maps, Spectacular Maps, Displacement Maps, and AmbientOcclusion Maps.
Here are more features:
NormalMap-Online allows you to adjust the Strength, Level, and Blur/Sharp of the texture/height map
You can also choose the filter and invert
You can choose from a variety of models and your custom models to test the texture maps on
You also can load in your own diffuse textures
And you can adjust the level of the displacment
You can enable/disable Normal, AmbientOcclusion, and Spectacular maps and the enviroment
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