When the user exports from the viewer, the export settings can be adjusted on the server through the onBeginExportReport event.

Change file name and format settings.
def beginExportReport(args: StiExportEventArgs):
    args.fileName = 'MyExportedFileName.' + args.fileExtension
    if args.format == StiExportFormat.PDF:
        settings = args.settings
        settings.creatorString = 'My Company Name (c) YEAR'
        settings.embeddedFonts = False

viewer.onBeginExportReport += beginExportReport

How it works. The event runs on the server, so export options are applied centrally regardless of what the user clicks in the viewer.

Hi. Need any help?