Share Secrets Securely
Encrypted. Delivered. Destroyed.
Send passwords, API keys, or confidential notes via encrypted, self-destructing links.
Your Link is Ready
Share this link with the recipient. They'll need the password to decrypt it.
How Secure Note Sharing Works
Write Your Secret
Type or paste any sensitive content — passwords, API keys, credentials, or confidential messages. Everything stays in your browser.
Encrypt & Protect
Your note is encrypted with AES-256-GCM in your browser before it ever touches our servers. Set a password, choose an expiration time, and optionally enable burn-after-reading.
Share the Link
We generate a unique one-time link. Send it to your recipient. They enter the password, decrypt the note in their browser, and it self-destructs.
What You Can Share Securely
Passwords & Login Credentials
Stop sending passwords over email or Slack. Create a self-destructing link that expires after your teammate reads it.
API Keys & Tokens
Share AWS keys, Stripe tokens, or OAuth secrets without leaving a permanent trail in chat history.
Confidential Business Documents
Send contract details, financial figures, or internal memos that automatically disappear after reading.
Personal Secrets
Share Wi-Fi passwords, security codes, or private messages that you don't want sitting in someone's inbox forever.
Medical & Legal Information
Transmit sensitive health records, case numbers, or legal details through an encrypted, zero-knowledge channel.
One-Time Instructions
Send server access details, deployment commands, or onboarding credentials that self-destruct after first use.
Why Choose TheSecureNote for Secure Sharing
AES-256-GCM Encryption
Military-grade encryption happens entirely in your browser. We never see your unencrypted data.
Zero-Knowledge Architecture
Our servers store only encrypted blobs. Even we cannot read your notes. No backdoors, no exceptions.
Self-Destructing Links
Notes automatically expire after your chosen time period, or immediately after the first read with burn-after-reading mode.
Password Protection
Every shared note requires a password. The decryption key never touches our servers.
No Account Required
Start sharing in seconds. No signup, no email, no personal data collected.
Open & Auditable
Client-side encryption means you can verify the security yourself. Your trust is earned, not assumed.
Trusted by Thousands
"Finally a secure way to share API keys with my team. No more pasting credentials in Slack."
"We switched from Privnote to TheSecureNote because of the client-side encryption. Much more trustworthy."
"Burn-after-reading is exactly what I needed for sharing one-time passwords with clients."
"Simple, fast, and no account needed. I use it daily to share database credentials with contractors."
"Best OneTimeSecret alternative out there. The zero-knowledge architecture gives me real peace of mind."
"Our legal team uses this for sharing confidential case details. The self-destruct feature is perfect."
"Finally a secure way to share API keys with my team. No more pasting credentials in Slack."
"We switched from Privnote to TheSecureNote because of the client-side encryption. Much more trustworthy."
"Burn-after-reading is exactly what I needed for sharing one-time passwords with clients."
"Simple, fast, and no account needed. I use it daily to share database credentials with contractors."
"Best OneTimeSecret alternative out there. The zero-knowledge architecture gives me real peace of mind."
"Our legal team uses this for sharing confidential case details. The self-destruct feature is perfect."
Frequently Asked Questions
Is this a free Privnote and OneTimeSecret alternative?
Yes. TheSecureNote Secure Sharing is a free alternative to Privnote and OneTimeSecret with stronger security. Unlike Privnote which uses server-side encryption, TheSecureNote encrypts your notes in your browser using AES-256-GCM before sending them to the server, so no one — not even us — can read your content.
How does self-destructing note sharing work?
When you create a secure note, it is encrypted in your browser and stored on our servers as an encrypted blob. You set an expiration time (from 5 minutes to 30 days). The note is automatically deleted when the timer expires, or immediately after first read if you enable burn-after-reading.
Can I use this to share passwords and API keys?
Absolutely. Secure note sharing is ideal for sending passwords, API keys, database credentials, OAuth tokens, and any other secrets you would normally send over email or chat. The self-destructing link ensures no permanent copy exists in message history.
Is the encryption really end-to-end?
Yes. Your note is encrypted using AES-256-GCM with a key derived from your password via PBKDF2. Encryption and decryption happen entirely in the browser. Our servers only store and deliver the encrypted ciphertext. We have zero access to the plaintext.
What happens if someone intercepts the link?
The link alone is not enough to read the note. The recipient also needs the password, which you should share via a separate channel (phone, in-person, different messaging app). Even if the link is intercepted, the note cannot be decrypted without the password.
Do I need an account to share a secure note?
No. You can create and share encrypted notes instantly without signing up, providing an email, or creating an account. The tool is completely free to use.
