If you are stuck on Level 246 or 5791 (the notorious "Jelly levels"), you don't need a dangerous hack. Here are the legal alternatives that work better than any "Version 19" extension.
It primarily worked on the web/Facebook version of the game. It does not work on the mobile apps (iOS/Android). Risks of Third-Party Downloads Leethax Extension Candy Crush Download 19
: Downloading "Leethax" or similar extensions from unofficial third-party sites or "cracked" links (e.g., Google Drive or obscure forums) poses a high risk of malware or spyware infection for your computer. If you are stuck on Level 246 or
. However, the extension has faced significant compatibility issues in recent years due to browser updates and changes in how games like Candy Crush are coded. Status and Compatibility Browser Support : Originally designed for Mozilla Firefox It does not work on the mobile apps (iOS/Android)