CF Performance Mirror door Pritam Mohanta

CF Performance Mirror adds contest-wise analytics to Codeforces profile pages. See average and median solve time per problem, high WA% topics, attempts vs solves and filter results by time ranges (last month, last 3 months, last year, all time). Ideal for competitive programmers who want quick, actionable performance insights without leaving the profile page.

1. Contest-wise average & median solve time (per problem tag & problem index)
2. WA% friction & high-WA topics list
3. Time filters: Last month, Last 3 months, Last 6 months, Last year, All time
4. Works automatically on Codeforces profile pages — no login or API key
5. Lightweight — runs as a content script and does not collect user data