Hi As of Dec 12, 2023, the editor no longer supports importing the .riv file format. We made this change in response to customer concerns about .riv security and to simplify future editor enhancements. Customers on all plans can export .riv files from the Rive editor for use in their sites and apps, which is the purpose of the .riv format. Customers on paid plans can also export the .rev format, which is a complete backup of a Rive project. Customers on all plans can import the .rev format.