We're currently using Document Generation and Issue Export by BrizoIT, which doesn't have a data center version and is being retired soon. I'm looking at a replacement app for exporting single issues to a PDF while also being able to customize the template and decide which fields should be included.
I've found other apps that export a single issue to PDF (Midori's Better PDF Exporter for Jira is one) but everything I've looked at requires you to create your template outside of Jira and customize it with HTML code. Document Generation provided a WYSIWYG editor where templates could be customized directly in the browser.
Are there any other apps out there that provide this functionality?