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OpenTTD Heightmap Generator
Final Edition
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1. Map Dimensions (Tile)
Width
64
128
256
512
1024
2048
4096
8192
Height
64
128
256
512
1024
2048
4096
8192
Select Fixed Ratio Region
Clear Selection
💡 Tip: Drag corners to scale, top red dot to rotate, or hold Ctrl + Drag center to move.
2. Elevation & Smoothing Parameters
Sea Level Cutoff
0m
Max Elevation
2000m
Terrain Smooth Level
2x
Raising at- or below-sea level pixels
Target Elevation:
1m
Raising low (but above sea level) pixels
Target Offset Elevation:
20m
Lake detection
Generate Heightmap
3. Export & Packaging
JSON Export Format
OpenTTD Spec (Ratio coords, X/Y swapped, city)
Standard GS (Tile int coords x, y, population)
Minimal Ratio Mode (x, y, name)
Population Scale Ratio
0.05
Town Filter Threshold
0.5
Export Towns JSON
📦 Pack All to ZIP (Heightmap + Towns)
Heightmap Preview
Download Heightmap PNG