Admin: Create Encrypted Link

Paste your plaintext, set a passphrase, click Encrypt. You'll get a share link for the recipient to decrypt with the passphrase. The ciphertext is stored in the URL #fragment (not sent to the server).
Crypto: AES-GCM (256-bit) + PBKDF2 (SHA-256, 200k iterations), 16-byte salt, 12-byte IV.