Normal Map Channel Inverter

Quickly fix inverted 3D textures with our free Normal Map Channel Inverter. Easily flip the Y-channel (Green) to convert normal maps between DirectX and OpenGL formats for flawless lighting in Blender, Unreal Engine, and Unity.

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3D TOOLS/NORMAL MAP CHANNEL INVERTER

Original

Drop normal maps here or click to open

Converted

Easily Convert Between DirectX and OpenGL Normal Maps

Have you ever imported a 3D model into your rendering software only to find that the lighting looks inverted, bumps look like dents, and crevices look like extrusions? This is the classic symptom of a normal map format mismatch. Our Normal Map Channel Inverter is a quick, browser-based solution designed to fix this exact problem by flipping the Y-channel (Green channel) of your tangent space normal maps.

DirectX vs. OpenGL Workflow

The 3D industry uses two primary standards for calculating normal maps: DirectX (which uses a Y- down calculation) and OpenGL (which uses a Y+ up calculation). Unreal Engine relies on DirectX, while Unity and Blender utilize OpenGL. If you download a texture baked for the wrong standard, our normal map flipper allows you to instantly invert the green channel, restoring accurate surface shading, correct lighting calculations, and perfect micro-details to your 3D materials.