Glossary
Data portability
Your ability to export and move your data without loss.
Data portability is your ability to take your responses out of a tool - completely, in a documented format, without losing structure or history. It is the practical difference between a tool you use and a tool that traps you.
Lossless usually means CSV for spreadsheets plus JSON for structure, with answers keyed to stable question ids rather than column headers that shift when a question is reworded. A clean, documented schema is what makes an export re-importable elsewhere instead of just human-readable.
Portability is also a compliance concern: regulations such as GDPR grant individuals a right to receive their personal data in a portable form, so the same export pipeline that protects you operationally also supports data-subject requests.