The secret link is encoded in binary and the bits are hidden inside the cover URL using invisible zero-width characters, without changing its destination.

Anyone who opens the masked link sees only the facade — they land normally on the innocent site. No suspicious redirects.

Only someone who uses this site, pastes the masked link into the Reveal tab, and knows the password can decrypt and extract the secret link.

Nothing is sent to any server. Everything runs in your browser. Save the page offline and it works just the same.