Bulk CSV import isn't live yet — it's on the 2026 roadmap. For now, add cards one at a time using the search-then-save flow at /collection.
If you're migrating from another tracker and have a large collection (100+ cards), contact support — we can run a one-time import script for Pro/Elite users. We need a CSV with columns: card name, set, card number, grade, quantity, purchase price, purchase date.