This downloads a single self-contained HTML file. Anyone who opens it is prompted for the password before the content is decrypted and shown, the document is encrypted with AES-256-GCM in your browser using the Web Crypto API before it's saved; the plain text never leaves your device, and Ledgerline never sees the password. Send the file and the password to your recipient through two different channels (e.g. email the file, text the password).