Terrain2Sketch


Sørfold, Norway — processed with Terrain2Sketch

• 130 GeoTIFF tiles from the Norwegian Mapping Authority (Høydedata)
• Total source data: 1.64 GB
• Terrain area exported: 3000 × 3000 meters
• Terrain export: 6.2 seconds
• Total time from Terrain2Sketch to SketchUp: 40 seconds

Terrain in SketchUp has never been easier or faster.

sure, but unless you provide al ink where people can try it, or a beta plugin, or something, all we have is your word.

I’m half tempted to move this thread to the SketchUp > Gallery right now :wink:

out of curiosity, where do you grab these ? I assume it’s a country-by-country situation right ?

So far we have tested GeoTIFF from Norway, USA, Canada, Sweden, Denmark.
So You have to download GeoTiffs from where you want in advance.
I have made a short video of how it works you can see it here:

Take a look and see what you think

I am very interested in finding people that would test a beta version so I can get their opinion .
I think this app solves a friction in working with terrain. That’s why I made it.. I was tired of Cloudcompare and other GIS software.. This is more Sketchup like.. Easy and quick.

Please don´t move it away from here..

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Terrain2Sketch – Development Update (August 2026)

Hello everyone,

I thought I’d share another progress update on Terrain2Sketch, my macOS application for importing GeoTIFF terrain directly into SketchUp.

The project has now reached a point where I use it in real architectural projects, and during the last weeks several important improvements have been added.

The original goal has never changed:

Bring accurate terrain into SketchUp — fast, accurate and easy.


Current workflow

The workflow is now very straightforward.

  1. Select a folder containing GeoTIFF files.
  2. Terrain2Sketch automatically detects all adjacent tiles.
  3. Choose export resolution (0.5 / 1 / 2 / 5 / 10 meters).
  4. Optionally crop the terrain before export.
  5. Generate an optimized terrain mesh.
  6. Export directly to GLB.
  7. Import into SketchUp with a single menu command.

The entire process usually takes only a few seconds for a normal building site.


GeoTIFF support

Terrain2Sketch has now been successfully tested with several different terrain datasets.

Norway

  • National Height Model (DTM)
  • National Surface Model (DOM)
  • EPSG:25833
  • 32-bit Float GeoTIFF

United States

USGS 1-meter DEM

Successfully tested with:

  • 32-bit Float
  • LZW Compression
  • Predictor 3
  • 512 × 512 tiled GeoTIFF

LZW decoding is now implemented directly inside Terrain2Sketch.


Adaptive mesh generation

Instead of exporting every raster point directly, Terrain2Sketch creates an adaptive terrain mesh.

The result is:

  • far fewer triangles
  • much smaller GLB files
  • faster SketchUp imports
  • reduced memory usage

while still preserving the terrain detail where it actually matters.


Crop before export

One feature that has become extremely useful is cropping before mesh generation.

Instead of exporting an entire GeoTIFF tile, only the required area is processed.

Benefits include:

  • faster processing
  • smaller files
  • cleaner SketchUp models
  • much less unnecessary geometry

Coordinate information

Each export now generates a small information file containing:

  • GLB filename
  • source folder
  • EPSG code
  • projected center coordinates
  • latitude / longitude
  • terrain extents
  • number of GeoTIFF files used

This makes it easy to relocate or document exported terrain models later.


An interesting discovery

While testing Norwegian terrain data I discovered something that may be useful for others working with GeoTIFF files.

When ordering data from the Norwegian Mapping Authority, there is an enormous difference between downloading the complete source dataset and requesting a clipped export.

For one recent test:

Complete dataset

≈ 900 MB

Clipped to the order polygon

≈ 640 KB

Both datasets represented exactly the same project area.

The difference was simply that one contained a huge amount of unnecessary surrounding raster data.

Processing times became dramatically faster when using clipped datasets.

It was one of those “why didn’t I discover this earlier?” moments.


SketchUp integration

Terrain2Sketch exports directly to GLB.

A small SketchUp extension imports the latest export automatically.

No OBJ conversion.

No intermediate software.

No manual file browsing.

Just one menu command inside SketchUp.


Orbit video export

The application can now also generate animated orbit videos directly from the terrain.

Both formats are supported:

  • Standard MP4
  • Transparent video (MOV with alpha)

This has turned out to be surprisingly useful when creating presentations and promotional material.


Current status

Implemented

:check_mark: Multi-tile GeoTIFF support

:check_mark: DTM

:check_mark: DOM

:check_mark: LZW compressed GeoTIFF

:check_mark: Adaptive mesh optimization

:check_mark: Multiple export resolutions

:check_mark: Crop before export

:check_mark: Terrain skirts

:check_mark: GLB export

:check_mark: Automatic SketchUp import

:check_mark: Coordinate information export

:check_mark: Standard orbit video

:check_mark: Transparent orbit video


What’s next?

There are still plenty of ideas for future development.

Some possibilities currently being explored are:

  • Orthophoto workflow
  • Quad mesh export
  • Additional SketchUp workflow improvements
  • Windows version (long-term)

Final thoughts

Terrain2Sketch originally started as a small personal project because I was spending far too much time preparing terrain for SketchUp.

It has gradually evolved into a complete workflow that I now use almost daily in my own architectural work.

The amount of repetitive work it removes is honestly much larger than I expected when I started the project.

I’m looking forward to sharing more progress in the coming weeks.

As always, feedback, suggestions and testing ideas are very welcome.

Thanks for reading!


PS: I have also started creating short YouTube videos demonstrating the workflow. The first videos are already online, and I’ll continue adding more as the project evolves.

  • +1 to @ateliernab’s comment. Still waiting for access to test. Otherwise, I say move it to the ‘Blue Sky’ (ie theoretical concept) category :wink:

I´m preparing a closed Beta for you now..

A video about Speed