The key elements of a landing page include a compelling headline, a clear value proposition, a strong call to action, and a lead capture form. The headline should grab the visitor's attention and clearly communicate the page's purpose. The value proposition should explain what makes the offer unique and valuable. The call to action should be prominent and encourage visitors to take action, such as filling out a form or making a purchase. The lead capture form should be simple, easy to fill out, and require minimal information from the visitor.