I am developing WebGIS using WebAppBuilder in Portal for ArcGIS.
I want to show Organization logo on print output. Please help me about how do I modify print widget to show organization logo in print output.
logo actually part of the layout-templates that are authored with the print service.
to use show logo in print output, (a) you need to author layout templates with logo and (b) then publish a custom print service with those layout templates.
here is a help topic discussing how you can publish a print service with your own layouts.
Tutorial: Publish additional services for printing in ArcMap—Documentation (10.5) | ArcGIS Enterprise
hope this helps
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