Reply To: Save the selected frame data to a separate json file

Thank you.
The article looks very promising.

In the meantime I have also found another way to go, which is:
https://creativepro.com/customizing-links-panel.php
So if that worked I could copy the links panel data and then paste it in a text editor.
But unfortunately the customization options are limited and long as they can include image pixel size, but not the size and transforms in the document units and the document coordinate system.