New Windows Powertoys includes GCode previewer

The new version of Windows Powertoys includes support for previewing GCode files (and PDFs and many more) in the preview pane of the File Explorer (there’s a setting to turn it on).

There’s heaps of other utilities with it as well

You can get it here Release Release v0.70.0 · microsoft/PowerToys (

It’s all open source, and on an MIT licence if you feel like hacking anything around yourself.