Don's Tools · Security & Privacy · Local-only Secret Note

Local-only secret note

A private note, encrypted with your password and saved only in this browser. Nothing is uploaded.

Your private note
Set a password to encrypt a note that is saved only in this browser.
Local-only Secret Note is a free privacy tool that keeps a private note encrypted with your password and stored only in your browser, never uploaded. It uses AES-256-GCM with a password-derived key, auto-saves as you type, and can be locked, copied or deleted. Because it is local and has no backdoor, a forgotten password or cleared browser data means the note cannot be recovered.

Frequently asked questions

Where is the note stored?

Only in this browser on this device, using its local storage, and encrypted with your password. It is never uploaded, synced or backed up anywhere.

How is it protected?

The text is encrypted with AES-256-GCM using a key derived from your password (PBKDF2). Without the password the stored data is unreadable, even to someone with access to the device's files.

What if I forget the password?

The note cannot be recovered. There is no reset or backdoor, which is what keeps it private, so choose a password you will remember.

Will the note follow me to another device or browser?

No. Because it is stored locally, it exists only in the exact browser where you created it. Clearing your browsing data or using private mode will remove it.

Is this good for very sensitive secrets?

It is a convenient, genuinely encrypted scratchpad for personal notes. For critical secrets like recovery phrases, a dedicated password manager with backups is still the safer choice.