This is a fork of the original heightmap builder (JBerg60/cities-heightmap)

Cities: Skylines Online Heightmap Generator

Generate heightmaps for Cities: Skylines with ease!
Check it out: heightmap.skydark.pl

[!WARNING] You NEED to set your own mapbox API key in settings to make this app work for you!

Features

• User-friendly interface
• Resizable map area selection
• Export options: PNG, RAW images, and ZIP packages

How to Use

1. Enter own Mapbox API token Expand settings (I icon in navbar), paste your own API key, save and refresh the page

2. Select the Area
   Choose the area you want to download. The green zone indicates playable tiles.
   

3. Choose Your Options
   Customize the settings to fit your needs.
   

4. Download
   Select one of the available download options.
   

Info Panel

Modify settings in the info panel to tailor your heightmap.

Original text by the original author below

Settings

• Sea Level: Set the height for sea level. For coastal areas, this is usually 0. For mountainous regions, use the minimum height of the area.
• Height Scale: Cities: Skylines supports heights up to 1024 meters. At 100%, the map is transferred 1:1. Increasing the scale accentuates mountains.
• Below Sea Level: Set the depth before hitting the absolute minimum. Useful for creating lakes or canals at sea level.
• Rise Only Land: Keeps sea level at 0 meters while raising the land. Useful for creating elevated land or lakes not adjacent to the ocean.

Settings Examples

1. Mountainous Area (e.g., Alps)

   • Minimum height: 200 meters
   • Maximum height: 2200 meters
   • Auto settings: Sea level = 200m, Height scale = 50%, Below sea level = 5m, All land raised.
   • Custom: Only land rise, Below sea level = 10m. In the map editor, setting sea level to 9m gives a 1m shoreline rise.

2. Coastal City (e.g., San Francisco)

   • Minimum height: 0 meters
   • Maximum height: 350 meters
   • Auto settings: Sea level = 0m, Height scale = 300%, Below sea level = 20m, Only land raised.

Frequently Asked Questions

Q: When downloading the map, Chrome says heightmap.raw is not commonly downloaded and may be dangerous.
A: Click the arrow up and choose keep. Heightmaps are safe to download.