How can i make my .grb files into the correct file type to upload to the pcb builder

hello, I use ultiboard 12.0 to create my PCB outline, however, the only gerber files i can create end with .gbr, which i don;t see it being supported by the PCB builder. Is there a software I can find online that can help me with transforming the .gbr files to a suitable file type for the PCB Builder?

Hello @mavc.cruz

I tested a .gbr file and it works in the PCB Builder. Apologies for the misinformation I will have our FAQ page updated. We appreciate you bring this to our attention.

awesome, thanks!