Backup & Restore

バックアップ

Kotoba stores everything locally in your browser. Export a backup file to keep your progress safe, or restore it when you switch devices.

What's Included

お気に入り

Words you starred for quick access

学習進捗

FSRS scheduling data for every word you've studied

学習記録

Daily check-ins and challenge history

設定

Level, word count, and display preferences

エクスポート

Download everything as a single JSON file — keep it somewhere safe, or move it to another device.

kotoba-backup-2026-08-01.json

インポート

Restore from a backup file. Data currently on this device will be overwritten, and the page reloads once the import finishes.

Backups are created and restored entirely in your browser. Your data never leaves this device.