Converting A Sketchup 2018 file to Sketchup 2015 without using 3D Warehouse


Is there any way of converting a Sketchup 2018 Model to a 2015 model without goign through 3D warehouse?
Just wondering because I cannot get onto it because of internet filters.


Eneroth3 has an extension that can let you open newer files in an older version. It’s in the Extension Warehouse. See: