Serialize/Deserialize geometry nodes.
- Download https://github.com/SaitoTsutomu/GeometryTools/archive/refs/heads/master.zip
- Start Blender.
- Edit menu -> Preferences
- Select the "Add-ons" tab.
- Press the "Install ...".
- Select the downloaded ZIP file and press the button "Install Add-on".
- Check the "Object: GeometryTools".
- Open geometry node editor.
- Show the sidebar and select the Edit tab.
- Push "Copy".
- Push "Paste" at another objects.