CF Performance Mirror

Contest-wise average & median solve time and WA% friction on Codeforces profiles.

CF Performance Mirror analyses a Codeforces profile and displays: • Contest-wise average and median solve time per problem index (A, B, C ...). • High WA% (wrong-attempt %), ranked per contest and overall—helps find frictional topics. • Toggle modes: Total / Rated / Unrated contests. • Compact, non-intrusive UI anchored under the user profile. How it works: • Runs client-side as a content script on Codeforces profile pages. • Uses Codeforces public APIs (user.status + contest.list + user.rating) and only reads profile/submission data. • No personal data is uploaded by default. See the privacy policy below for full details. Install and open any Codeforces user profile (https://codeforces.com/profile/<handle>) — the compact card will appear below the profile box.