A modern Privnote alternative
pcpx.one is a privacy-first alternative to Privnote for sending encrypted messages, self-destructing notes and files. Everything is encrypted in your browser; the key stays in the link fragment and never reaches the server.
What zero-knowledge gives you
- Zero-knowledge: server stores only ciphertext
- Self-destructing one-time links with optional expiry
- Messages and files up to 50 MB
- Optional password and recipient approval
Why people look for a Privnote alternative
Privnote popularised the idea of a note that destroys itself after being read, and for a quick throwaway message it still does the job. The friction shows up as soon as the content matters: there is no file support, the threat model is not spelled out in a way you can check, and you have to take the operator's word for what happens to your text on the way through.
pcpx.one answers the same need with a stricter construction. The encryption runs in your browser using AES-256-GCM before anything is uploaded, and the decryption key is written into the URL fragment after the # — the one part of a URL that browsers never transmit. What reaches the server is a ciphertext blob it has no way to open.
That difference is verifiable rather than promised. Open the developer tools, watch the network tab while you create a link, and confirm that the fragment never appears in a request. You also get files up to 50 MB, an optional password layer on top of the link, and recipient approval for cases where the link alone should not be enough.
Frequently asked questions
How is this different from Privnote?
pcpx.one encrypts in your browser, keeps the key in the URL fragment, supports files up to 50 MB, and adds optional password and recipient-approval layers — with an honest, verifiable threat model.
Do I need an account?
No. Write your note, get the one-time link and share it. No account, no app.
Related pages
Open the secure app at pcpx.one and create your encrypted link.