The was a popular browser add-on used to provide cheats and "infinite" resources for Facebook-based games like Candy Crush Saga . However, it is important to note that the extension has been largely defunct for several years due to changes in browser security (like the transition from Manifest V2 to V3) and updates to the games themselves. If you are looking for a way to download or use it today, Leethax Extension for Candy Crush
While some resources are local-only, completed levels and rankings often sync to your account, allowing you to breeze through tough stages on PC and continue on mobile. How to Download and Install Leethax Leethax Extension Candy Crush Download 19