# Tiny tool to change normal maps format?

**URL:** <https://blenderartists.org/t/tiny-tool-to-change-normal-maps-format/1466288>\
**Category:** Materials and Textures\
**Tags:** texturing\
**Created:** [May 26, 2023, 4:34pm UTC](https://blenderartists.org/t/tiny-tool-to-change-normal-maps-format/1466288 "2023-05-26T16:34:52Z")\
**Posts on this page:** 1\
**Showing post:** 4

<div class="post-metadata">

**Author:** ![Okidoki](https://blenderartists.org/user_avatar/blenderartists.org/okidoki/32/1434104_2.png) [@Okidoki](https://blenderartists.org/u/Okidoki)\
**Post date:** [May 26, 2023, 6:37pm UTC](https://blenderartists.org/t/tiny-tool-to-change-normal-maps-format/1466288/4 "2023-05-26T18:37:05Z")

</div>

Well… of course you could use any image processing /manipulation tool to invert the green channel… for example with [Imagemagick](https://imagemagick.org)… :

```auto
convert input -channel green -negate +channel output

```

_( which may be the tiniest ??)_

and also some normal map apps do have a convert or switch (green)/ invert (height) button… like jsut to name some examples:

> **[GitHub - Theverat/NormalmapGenerator: A simple program that converts images...](https://github.com/Theverat/NormalmapGenerator)**
>
> A simple program that converts images into normal maps - GitHub - Theverat/NormalmapGenerator: A simple program that converts images into normal maps

[https://boundingboxsoftware.com/materialize/](https://boundingboxsoftware.com/materialize/)

Or maybe this (windows only?):

> **[GitHub - Mario-Hero/FlipGreenChannelTool:...](https://github.com/Mario-Hero/FlipGreenChannelTool)**
>
> 能把图片的绿色通道反转的工具，用于OpenGL和DirectX法线贴图的相互转换。支持JPG/PNG/TIFF/EXR图片格式。 A tool which can invert the green channel of pictures in order to convert normal maps between format OpenGL and DirectX. Support JP...

---

_[View the full topic](https://blenderartists.org/t/tiny-tool-to-change-normal-maps-format/1466288)._