Codeforces Monolith (CF Monolith)

Enhances your Codeforces experience with dashboard analytics, competitive stats comparison, dark mode, and many more.

CF Monolith consolidates everything you actually need from Codeforces into one lightweight extension — no more juggling five different tools that slow down your browser and clutter your toolbar. Built natively on Manifest V3, it runs entirely client-side with zero data collection and zero background bloat. What's new - Friends Comparison — Compare stats against anyone on your friends list directly from the Analysis Dashboard via a new native dropdown. - Overhauled Dark Mode — Rebuilt from scratch for a consistent, high-contrast dark UI across all Codeforces pages. - Improved Rating Predictor — Upgraded to use local nearest-neighbor solve data for more accurate difficulty estimates on unrated problems. Core features: Compare Dashboard — Side-by-side breakdown of two users — solved problems, tag distribution, difficulty spread — rendered as interactive SVG charts. Click any bar to see the exact problem list behind it. The Friends dropdown lets you pull up any friend directly without typing handles. Rating Predictor— Fetches solve data from recent rated contests by division, builds a reference table of solve counts → ratings, then uses inverse-distance weighted averaging to estimate difficulty for unrated problems. Rounded to the nearest 100. Especially useful right after a contest when Codeforces hasn't assigned a rating yet. Famous Solvers — Pin world-class solvers and study their problem choices and submission patterns from your dashboard. Hide Tags Toggle — Conceal topic tags across problem lists and pages to simulate contest conditions, while keeping difficulty ratings visible. Mistake Analyzer — Parses your submission history to surface the specific problem tags behind your highest WA rates. Problem Recommendations — Personalized training suggestions targeting weak algorithmic tags, calibrated to your current rating. India Rank — Toggle regional rankings on any contest leaderboard to see your calculated India placement instantly. Problem Notes — Write edge cases and proof notes directly on the problem page, persisted locally across sessions. Privacy Policy: Execution is strictly scoped to `codeforces.com`. No permissions beyond what's needed, no telemetry, no external servers. All data stays on your machine. API calls go exclusively to official public Codeforces endpoints.