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: Open the .rar file and extract the .js file (typically willcookie.js ). Open Cookie Clicker : Launch the game in your browser. Open Developer Tools : Press F12 or Ctrl + Shift + I .

Because this is a .rar file (likely containing the .js script or a local loader), you can use it in one of two ways:

: Most versions of WillCookie will add a new button or tab to the top of the game interface where you can toggle specific automation features (e.g., turning off "Auto-Buy" to save for a specific upgrade).