Encrypted Daily Journal - Online Private Diary

Your diary entries are stored exclusively in your browser's local storage. No data is ever transmitted to any server. This means your private thoughts remain completely on your device, giving you full control over your data.

We use AES-256 encryption (Advanced Encryption Standard) with a key derived from your master password using PBKDF2 (10,000 iterations). This is the same encryption standard used by banks and governments worldwide. Without the correct password, the data is unreadable.

Unfortunately, if you forget your master password, your encrypted diary data cannot be recovered. There is no password reset option, no backdoor, and no recovery email — this is by design to ensure maximum privacy. We strongly recommend storing a backup and keeping your password in a safe place.

Since all data is stored locally in your browser, it doesn't sync automatically across devices. However, you can use the Export feature to download an encrypted backup file, transfer it to another device, and use the Import feature with the same password to restore your entries.

Yes! This is a completely free, open-source tool. There are no ads, no trackers, no analytics, and no data collection of any kind. Your diary is encrypted before it's saved, and we never see your password or your entries. The entire encryption and decryption process happens in your browser.

Clearing your browser's local storage will permanently delete your encrypted diary data. We strongly recommend regularly exporting a backup using the Export button. Store the backup file in a secure location (like an encrypted cloud drive or external storage).

Currently, to change your password you need to: (1) unlock your diary with the old password, (2) export your entries as plaintext JSON, (3) reset the diary, (4) create a new diary with a new password, and (5) import the plaintext backup. We're working on a streamlined in-app password change feature.

Absolutely! Once the page is loaded, the entire diary application works completely offline. No internet connection is required to read or write entries. All cryptographic operations are performed locally in your browser.