Secret Drop
Share a password, a key or a note through a link that stops working once it has been read.
How this works
Your secret is encrypted in this browser. The key that opens it becomes part of the link,
after the # — and browsers never send that part to a server. We hold the
encrypted bytes and nothing that can turn them back into text.
So send the whole link, keep it out of anywhere public, and know that if you lose it we cannot get the secret back for you. That is the point of it.
A passphrase adds a second gate: we check it before handing the encrypted bytes over, and after a few wrong tries the secret is destroyed.