CF Performance Mirror
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Overview
Track your Codeforces performance with clear insights into solve times, failure rates, rating changes and problem-level errors, broken down by division and time range. Filter by contest type and focus on selected topics, rating ranages to quickly spot weak areas and improve efficiently, all directly on your profile page.
How it works
Runs entirely client-side on `codeforces.com/profile/<handle>`. Fetches from three public Codeforces APIs (`user.status`, `contest.list`, `user.rating`). No server, no tracking — all computation happens in your browser.
Tags
Privacy Practices
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Not being sold to third parties, outside of the approved use cases
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Not being used or transferred for purposes that are unrelated to the item's core functionality
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Not being used or transferred to determine creditworthiness or for lending purposes
🔐 Security Analysis
This extension hasn't been security-scanned yet.
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