For the following versions of SharePoint, the Screen9 Add-in is recommended.
Installation of the Add-in is available from Microsoft AppSource.
- SharePoint Online Classic UI
- SharePoint On-premise 2013, 2016 and 2016 + SP2
And for the versions below, the Screen9 Web Part Plugin based on SPFX is recommended.
Instructions on how to install the plugin can be found in this article.
- SharePoint Online Modern UI
- SharePoint On-premise 2016 + FP2