Tag Cloud Web Part Settings
When the web part is added to the SharePoint site page, you have to adjust its view. Use “Edit - Modify Shared Web Part” button.
The settings block will be displayed.
It is required to define site and list from which the tags will be taken.
Then you can define maximum tag count and font size. It is also possible to select type of sorting (rate or alphabetical).
Once you have defined the settings click “OK” to finish adjustment or “Apply” to save settings and continue.