I strongly recommend you to hire a third-party or a smart tool to migrate your current store on Magento to Squarespace. The first name in my mind is LitExtension, which is considered world top company in shopping cart migration. Therefore, you can absolutely feel safe when migrate your data with them. With Magento to Squarespace migration, LitExtension allows you to migrate these following data: Products: Name, short & full description, status, manufacture, price, URL, variants, thumbnail image… Product Categories: Name, description, image, URL… Manufactures: Name, image, description Taxes Customers: ID, name, email, customer group, created date, passwords… Orders: ID, date, billing adress, shipping adress… Reviews Multiple language And so many more. To know in detail what data can be migrated, see here How can you migrate your store with LitExtension? You only to perform 3 simple steps to migrate your data from Magento to Squarespace Register an account on LitExtension website. Click “Create new migration”. Input your Source and Target Cart information and select entities you want to migrate. Wait for the tool to finish the job. You can read their detailed instruction here In conclusion, I suggest you try LitExtension demo migration to fully understand how it works. The demo is totally free and it will migrate only a limited number of entities. I hope this answer helps you. Good luck !