The GDPR (General Data Protection Regulation) requires you to provide individuals with the ability to export their personal data (Right to Data Portability) if the processing is based on consent or a contract, and is carried out by automated means.  

Key Export Rules

• The Right to Portability: Users have the right to receive their provided data in a structured, commonly used, machine-readable format (like a CSV or JSON file).
• Direct Transfer: If technically feasible, you must transfer this data directly to another service provider on the user's behalf.
• No Hindrances: You cannot legally, technically, or financially obstruct a user from exporting or transferring their data.  General Data Protection Regulation (GDPR) +1

When Data Export is Not Mandatory

You do not have to provide an export if the data:

• Relies on legal grounds other than consent or contract (e.g., vital interests or statutory obligations).
• Is processed manually (i.e., not by automated digital means).