Configuring the Creo View Thumbnail Generator > Thumbnail Generator Server Controlled Publishing
  
Thumbnail Generator Server Controlled Publishing
When the Visualization server initiates a request to convert Thumbnail data to the Creo View format, the server uses the pvsthumbworker to convert the thumbnails in the background. This Visualization server could be a Windchill server or another customized server environment.
The Thumbnail worker is an important link in achieving the full functionality of the Visualization server. For more information, refer to Visualization Server Definition.