Create a secret
Write a password, API key, recovery code or other sensitive text and choose when the link should expire.
Three simple steps
How it works
Openonce lets you share sensitive text through a link that can only reveal its content once. After a successful reveal, the encrypted secret is permanently removed.
No account or installation is needed.
Share the link
A unique link is generated. Copy it and send it to the recipient through a channel you trust.
Open once, then gone
The recipient reveals the secret once. The encrypted content is then removed and cannot be retrieved again.
Ready to share something privately?
Create a one-time link in a few seconds.