Invert height
Defaultoff
When enabled, dark pixels become high and light pixels become low.
Height Map to STL
Turn grayscale height maps and terrain images into 3D-printable STL models with live preview.
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About This Tool
Upload a PNG, JPG or WebP height map. Brighter pixels become higher peaks. Tune max height, base thickness, smoothing and sample resolution, then download STL for printing or further editing.
Tips
- 1Prefer high-contrast grayscale sources
- 2Raise base thickness for stable prints
- 3Higher resolution captures more detail but produces larger files
About Configuration Options
Terrain settings
Max height
Default5mm
Range0.5mm – 20mm · step 0.5mm
Maximum height of the tallest terrain peak in mm.
Base thickness
Default1mm
Range0mm – 5mm · step 0.5mm
Thickness of the solid base below the terrain.
Smoothing
Default2
Range0 – 10
Applies smoothing to reduce noise in the terrain mesh.
Resolution
Default400px
Range100px – 400px · step 50px
Number of grid subdivisions. Higher = more detail, larger file.
Format Information
Input format
- Extension:
- Image
- Full Name:
- Image File
- Type:
- Image
- Format:
- PNG / JPG / JPEG / SVG / WebP
- Open With:
- Image Editor、Windows Photos、Preview (Mac)、Vector Editor、Web Browser、Inkscape
- Description:
- Any supported image format including PNG, JPG, JPEG, SVG, and WebP. The tool automatically detects the format and applies the appropriate conversion settings.
Notes:
- Maximum supported resolution: 4096×4096 pixels
Supported Features:
- Supports PNG, JPG, JPEG, SVG, and WebP formats
- Automatic format detection
- Transparency support for PNG and WebP
Output format
- Extension:
- stl
- Full Name:
- Stereolithography
- Type:
- 3D Mesh
- Format:
- STL (Binary / ASCII)
- Tools:
- Cura、PrusaSlicer、Chitubox、Simplify3D
- Open With:
- Slicer Software、MeshLab、Windows 3D Viewer、STL Viewer Online
- Description:
- STL is the most widely supported 3D printing format, storing triangle mesh only. It works with virtually all slicers and printers, the universal choice.
Notes:
- Does not support colors, textures or materials
- No unit definition — verify scale in your slicer
- ASCII format is 4-6× larger than binary
Supported Features:
- Triangle mesh only — simple and universally compatible
- Binary and ASCII encoding options
- Directly importable into Cura, PrusaSlicer, Chitubox, etc.
How to Use
1
Upload a height map
Drop a grayscale or color image
2
Adjust terrain settings
Set height scale, base and resolution
3
Download STL
Export a printable mesh
Frequently Asked Questions
About this tool
Q
What image works best?
A
Grayscale elevation maps or high-contrast photos. White = high, black = low (or invert for the opposite).
Q
Can I use real terrain data?
A
Export a grayscale DEM or screenshot from a mapping tool, then upload it here. Direct map-API terrain fetch is not included in this version.
Q
Is processing local?
A
Yes. Conversion runs in your browser with optional Web Worker acceleration.
General questions
Q
Is Any3D completely free?
A
Yes, Any3D's core features are free to use forever. We provide format conversion, model optimization, and online preview at no cost, with no registration required.
Q
Are my files uploaded to your servers?
A
No. Files you select are processed only in your browser on this device—they never leave your device and are never sent to our servers. We don't store any user files; after processing, related data in browser memory is released.
Q
Do I need to install software?
A
No installation required. Any3D is entirely browser-based—just open the webpage to use all features. It works on Windows, Mac, Linux, and other major operating systems.
Q
Is there a file size limit?
A
The processing capacity depends on your device performance and the model's vertex count and texture complexity, rather than file size alone. We impose no file size limit, but when a model exceeds what your device can handle, the page may lag or even crash.