Is there a way to import/export a page from another project?

Thanks for asserting the need for such function. Something like that has been asked already ( Option to design standalone UI elements that can be easily added to an existing UI and Loading screens from SD card - #3 by Thomas1955 ) and several tips were tried (I even shared a zip file at V1.4.0 CPU usage is too high - #2 by Hermit), but the feature is not yet implemented in SquareLine Studio v1.