Identify Pro features before publishing a report or dashboard

I have a number of reports and dashboards that I want to share with non-pro (free) users.  I have tried various methods of sharing the reports/dashboards (share function in web app, embed in sharepoint, embed iframe, etc) but non have been successful.

Having tested with a colleague I can see that they're prevented from viewing as I have used "pro" features.  What I can't find is how to identify the feature(s) that I've used causing the issue.

Is there a way to identify the feautres I've used that prevent free users from viewing the reports/dashboards (or is there a list somewhere!)?  Publishing to the web is not an option, as they contain data only our organisations employees should see.

Thanks