Beginning with pdfToolbox 10, a new report type is available on command line (and in Switch):

This report dumps all Variables and their values in a JSON file. The other report options can be used e.g. in order to specify the location and the name with which the JSON report is created.

The JSON file contains a "vars" object and key value pairs for all Variables.
This report type can be helpful for use cases, where JavaScript Variables are e.g. calculating multiple thresholds based on a single Variable defined during runtime or when a JavaScript Variable is deriving information about the PDF itself.

The report can be used in Switch as a dataset or in other workflow applications, MIS-systems or any other applications that integrate pdfToolbox in order to export any kind of information that is available in the pdfToolbox internal JavaScript object.

The content of the vardump JSON for this CLI call will be:

{
   "vars" :
   {
      "Calcs_for_LFP_Preflight_-_viewing_distance" : 200,
      "eff_min_fontsize" : 200,
      "eff_min_imageresolution" : 40,
      "input_scalingfactor" : 100,
      "input_viewingdistance" : 10
   }
}

And will vary if the values of the Variables "input_viewingdistance" and "input_scalingfactor" are changed using --setvariables=...

Note: The used Profile is part of the "Shapes, Variables, JavaScript, Place content" Library and contained in the Desktop version.