Classic 3×3 gradient operator — good balance of noise and detail.

Higher values exaggerate surface detail.

Smooth input before computing normals to reduce noise.

Flip normal direction per axis. Use to match your engine's coordinate system (OpenGL vs DirectX).

Wraps edges so the normal map tiles seamlessly.

Hover over the result to inspect individual normal values below.

• Use height maps for best results
• Increase strength for low-contrast inputs
• Pre-blur to smooth noisy photos
• Toggle Invert G for DirectX convention
• Enable Tiling for repeating textures