FB Invisible Message lets you send secret messages on Facebook Messenger that appear invisible to everyone except recipients who have this extension installed. HOW IT WORKS When enabled, your messages are encoded using special Unicode tag characters (invisible to the human eye) before being sent. Only users with this extension can decode and read the hidden content. COMPLETELY INVISIBLE TO OTHERS WHO DON'T INSTALL THE EXTENSION. WHY INSTALL THIS? - Privacy: Share sensitive information without leaving readable traces in chat history - Fun: Send secret messages that only friends with the extension can see - Simple: One-click toggle to enable/disable - no configuration needed - Lightweight: Works seamlessly with Facebook Messenger without slowing it down FEATURES - Encode outgoing messages into invisible Unicode characters - Automatically decode incoming invisible messages - Simple on/off toggle in the popup - Works on both facebook.com and messenger.com - No data collection - everything happens locally in your browser HOW TO USE 1. Install the extension 2. Click the extension icon and toggle "Enable" 3. Put secret messages on Messenger between > < (example > secret <) - they'll be automatically encoded 4. Recipients with this extension will see your decoded message NOTE: Both sender and recipient must have this extension installed and enabled to communicate invisibly.