How to Convert Multiple GBP Files to U3D?
1. Download and Install reaConverter
Download reaConverter and install it in seconds. The setup is straightforward — no complex configuration, no extra software required.
2. Load your GBP files
Start reaConverter and add your .gbp files. The software processes everything locally, so your files never leave your computer.
Use drag-and-drop, folder browser, or right-click conversion from Explorer.

3. Select U3D as output format
Select U3D from 700+ supported output formats. Choose your destination folder and adjust settings to match your needs.

4. Start GBP to U3D conversion
Click Convert to start the batch. reaConverter processes files quickly and shows you the status of each one.

Once done, reaConverter shows a summary. Click 'Show converted files' to jump straight to your U3D output.








