CipherSeal

Seal a link or line of text with a keyword. Only that keyword opens it again.

Sealing uses AES-256-GCM with a key derived from your keyword (PBKDF2, 150,000 rounds). The sealed code is safe to paste anywhere — a message, a comment, a text file — because it only opens with the keyword. Forget the keyword and the code cannot be recovered by anyone, including this tool.