[Qgis-user] [ANN] TopoToImage - Terrain Visualization Tool with GeoTIFF Export

[Joe Lertola]

Hi everyone,

I'd like to share an open-source tool that complements QGIS workflows for terrain visualization.

TopoToImage 4.0 is a specialized application for converting digital elevation models into colored shaded relief images with GeoTIFF export. It’s designed for users who want a dedicated gradient-based workflow for terrain coloring.

Key Features:
  • Interactive gradient editor with drag-and-drop color stops
  • Professional hillshading with configurable lighting and cast shadows
  • Exports georeferenced GeoTIFF files ready for QGIS
  • Works with common elevation formats (SRTM, GTOPO30, GMTED2010, etc.)
  • Save and share custom gradient libraries
  • Free and open-source (MIT license)

Typical Workflow:
  1. Load elevation data (GeoTIFF, BIL, etc.)
  2. Apply or design custom color gradients
  3. Configure hillshading and shadows
  4. Export as GeoTIFF
  5. Import into QGIS as a terrain base layer

I know QGIS has excellent built-in terrain visualization tools. TopoToImage offers a different approach focused on rapid gradient experimentation and reusable color schemes - useful when you need to create multiple terrain visualizations with consistent styling.

Download & Info:
  • GitHub: https://github.com/jlert/TopoToImage/releases/latest
  • Documentation: Includes User Guide PDF and Elevation Data Sources guide

Platform:
  • macOS (Apple Silicon): Download app bundle
  • macOS (Intel), Windows, Linux: Download the source code. Run from source (Python 3.8+ required)
  • Installation details in README

Note for macOS users: The app shows a Gatekeeper warning on first launch (unsigned developer). Right-click → Open to bypass.

Beta Status:
  This is an early release and I'm actively looking for feedback from the GIS community. If you try it, I'd appreciate hearing what works well and what could be improved.

Questions welcome!

Best regards,
Joe Lertola