cfStats is a Chrome extension developed by Aditya Sharma that allows users to track their solved Codeforces problems by rating. This tool provides a comprehensive view of various statistics related to a Codeforces profile. Users can see problems solved grouped by difficulty, along with a graphical representation based on ratings. Additionally, cfStats highlights unsolved problems, indicating those that have been submitted but not accepted yet.

The UI of cfStats is designed to resemble the original Codeforces profile section, ensuring a seamless experience with minimal distractions. This free extension exclusively interacts with the Codeforces API and operates directly within the browser.