LeetCode Problem Difficulty Rating is a free Chrome extension designed to enhance the user experience on the LeetCode platform. This tool displays the difficulty rating of various coding problems directly on the problem detail page. By providing this information at a glance, users can better assess which problems to tackle based on their skill level.

In addition to displaying difficulty ratings, the extension also offers links to corresponding contests. This feature allows users to easily navigate to relevant contests that may include similar problems, facilitating a more streamlined practice and preparation process. Overall, this add-on serves as a useful resource for those looking to optimize their coding practice on LeetCode.