Download the JSON file and import to your site.
Importing Divi Library Items
Once you have exported a Divi Library collection, you can import it onto a new website. You will be using the same portability popup to do this. First things first, navigate to your Divi > Divi Library page and then click the "Import & Export" button. This time you will need to click the "Import" tab to reveal the import options.
Once inside the Import tab, click the "Choose File" button and locate the .JSON file that you previously exported. Once you have selected the file, click the "Import Divi Builder Layouts" button to begin importing. Once the import process has completed, you will notice that the Divi Library items have been added to your library and included images have been imported into your WordPress Media Library.