nJob is a free Windows tool for creating and working with normal maps and related texture types used in real-time 3D applications and games.
Features
- Photo → Height map — convert a photograph to a height map using luminance extraction
- Normal map → Height map — reconstruct a height map from a normal map
- Height map → Normal map — generate a tangent-space normal map from a height map
- Ambient occlusion — compute ambient occlusion maps from height maps
- Batch processing — process multiple files at once
- Reads and writes common image formats (BMP, TGA, PNG, JPG)
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Note: nJob is an older Windows tool and may require compatibility settings on modern Windows versions.