This is continuation of work I had explored in a previous post. Given there is no mechanism in the UE4/UE5 editor to compile all blueprints I always figured it would be handy to have a button to do this. Much like the compile/build button you would get in Visual Studio. Behind the scenes it is using a commandlet to do the actual compilation work I’ve put together a demo game for UE4 4.

Currently in the UE4 editor there is no way to compile all blueprints in your project. You can compile blueprints individually but there is no in editor button to compile all blueprints. Unreal Engine does offer way to do this via command line however by way of Commandlets. Commandlets Commandlets are command line programs that run inside of the Unreal Engine environment. They are most often used to make bulk changes to content, iterate over content to get information about it, or as a unit testing mechanism.