Question -  
How to minimizes Revit file sizes ?


Removed Unused Family Type

Go Manage =>  Purge Unused ..


Delete Unused Design Options, Images, Rendered Perspectives ..

Go Manage =>  Design Options ..

Go Insert =>  Manage Images ..

Go to Project Browser, delete ALL Unused views under 3D view, rendered ..  etc.


Compact File

Go Save As =>  Project ..  Click Option then checked ‘Compact file’.