Your Heightmap / Image to STL Relief Generator
Convert a grayscale image or heightmap to a 3D-printable relief STL: set size, base thickness, relief height, contrast, gamma and smoothing.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Illustration. Open the tool for the real thing.
See it in action
The Heightmap / Image to STL Relief Generator with sample data entered and the result showing.
What is the Heightmap / Image to STL Relief Generator?
A heightmap is a grayscale image in which brightness means height. This tool turns any image — a terrain map from a GIS tool, a depth map from a camera or AI model, a logo or a texture — into a watertight 3D relief with a flat base. You choose the model width, the base thickness, the maximum relief height above the base, the sampling resolution, and whether white or black is the high point. Contrast, gamma and smoothing sliders clean up noisy maps before the mesh is built.
The result is a solid STL with a flat bottom, ready to print flat with the relief facing up: mountains and valleys from terrain data, raised logos on coasters, embossed textures, bas-relief portraits. A live 3D preview with a section tool lets you inspect it before downloading.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Brightness mapped to relief height above a flat base.
Width, base thickness, relief height, contrast, gamma, smoothing, invert.
Closed manifold mesh with a flat bottom.
Images are processed locally.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
How it compares
A plain look at this tool next to the usual alternative.
| This maker tool | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
What image formats work?
PNG, JPG, WebP and GIF. Use grayscale for best control.
Can I use satellite terrain data?
Yes — export a heightmap image from your GIS tool and drop it in.
How do I make the surface smoother?
Increase smoothing or reduce the resolution step.
Is it free?
Yes, with no watermark.
How do I use the Heightmap / Image to STL Relief Generator?
1. Drop in a grayscale image or depth map. 2. Set the width, base thickness and maximum relief height. 3. Adjust contrast, gamma and smoothing; invert if needed. 4. Download the STL and print it flat.
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Try the Heightmap / Image to STL Relief Generator now
Convert a grayscale image or terrain heightmap into a 3D-printable relief STL. Free to use.
Try it free