From the Autodesk App Store:
About This Version
Version 1.5.0, 5/23/2018
New features available to subscription users!
This new release adds Revit 2019 support, the ability to export high resolution images, allows gradient backgrounds and even more element types can be hidden! Bug fixes and subtle UI improvements are included.
Description
Do you have AutodeskĀ® RevitĀ® families with horrible preview images? This app is for you!
With one click, P.I.G. Batch will replace those ugly preview images…
Read more