Codeforces Monolith (CF Monolith)

Tracking since May 29, 2026.

Changelog

• Jun 10, 2026
  description

  🚀 Optimize your competitive programming workflow with CF Monolith, the ultimate all-in-one productivity and analytics suite designed specifically for Codeforces.
  
  Managing five or six different single-purpose extensions clutters your browser and slows layout rendering. CF Monolith consolidates every critical tool you need into a single, highly optimized, lightweight architecture. Built natively on Chrome's secure Manifest V3 platform, it enhances your contest preparation, sharpens your tactical focus, and delivers deep analytical insights directly inside the Codeforces interface.
  
  CORE FEATURES:
  
  • 📊 Interactive Compare Dashboard
  Instantly generate visual analytical overlays comparing your submitted and attempted problems directly alongside rivals or friends. Tap into any chart bar to drill down into a dynamic, interactive list of specific questions for precision performance tracking.
  
  • 🔮 Predictive Analytics for Unrated Problems
  Stop guessing the difficulty of unrated or newly published problems. Our predictor evaluates unique problem parameters to deliver real-time difficulty estimations, helping you pick training sets scaled accurately to your level.
  
  • 👑 Famous Solvers Tracking Dashboard
  Learn from the absolute best in the world. Pin elite, world-class solvers and track their problem choices, implementation speeds, and active submission patterns right from your dashboard to study grandmaster-level strategies.
  
  • 🙈 Native 'Hide Tags' Toggle (With Smart Ratings)
  Simulate a realistic contest environment by hiding problem tags across lists and individual pages to prevent spoilers—all while keeping the question's difficulty rating perfectly visible for training guidance.
  
  • 🛡️ Behavioral Mistake Analyzer
  Train smarter by identifying structural weaknesses. The analyzer parses your historical submission data to isolate the specific problem tags generating your highest number of 'Wrong Answer' (WA) verdicts.
  
  • 🎯 Algorithmic Problem Recommendations
  Receive automated, personalized training recommendations targeting core algorithmic tags. The engine mathematically calibrates and suggests problems tailored precisely to your current user rating to maximize your practice efficiency.
  
  • 🎨 Seamless UI Modernization & Dark Mode
  Switch into a fully optimized, native Dark Mode with a single click to protect your eyes during intense late-night contest grinds. Enjoy cleaner layouts, reduced eye strain, and a modernized visual interface.
  
  • 🇮🇳 Regional Leaderboards & India Rank Tracking
  Gain instant perspective on your regional standing. Toggle localized geo-rankings seamlessly on the leaderboards to view your precise, calculated India Rank on any contest you have actively participated in.
  
  • 📝 In-Context Problem Workspace Notes
  Maintain continuity across long training sessions. Jot down edge cases, complex proof techniques, or implementation pitfalls directly on the active problem page—saved securely and automatically for your future review.
  
  🔒 PRIVACY, SECURITY & PRIVILEGE ASSURANCE
  
  • Principle of Least Privilege: Extension execution is strictly isolated to the https://codeforces.com domain namespace. It requests zero global or tracking permissions.
  
  • Complete Local Execution: Operates entirely client-side. Telemetry, analytical data processing, and workspace notes are computed and cached locally on your machine.
  
  • Zero Data Transmissions: We do not monetize, transmit, or collect your personal data or Codeforces credentials. All API communication routes directly and exclusively to official, public Codeforces API endpoints.
  
  Ditch the extension clutter. Elevate your competitive programming infrastructure and download CF Monolith today!

  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.

Permissions & access

Permissions

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Host access

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Screenshots