CF Performance Mirror

Unknown author · Workflow & Planning

Open in Chrome Web Store

Users

539

Avg rating

4.9

Ratings

Updated

Oct 12, 2026

Media

5 items

Description

Analyze Codeforces performance—solve time, failure rates, rating changes, errors by division/time, online friends & submissions. 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 ranges to quickly spot weak areas and improve efficiently, all on your profile page. Also see online friends and their submissions on the problem you're viewing. How it works Runs entirely client-side on `codeforces.com`. Fetches from public Codeforces APIs (`user.status`, `contest.list`, `user.rating`, `problemset.problems`, `user.info`, `contest.status`). No server, no tracking, all in your browser.

History

30d 90d 1y all

rating_count is the Chrome Web Store ratings count, not a written-review count.

Details & SEO

SEO signals

Listing completeness signals

Title length
Characters in the extension name.
21
Description length
Characters in the listing description.
764
Media assets
Screenshots and videos on the listing.
5
Has promo video
Whether the listing includes at least one video.
No
Languages
Declared language locales.
1
Developer website
Listing exposes a developer website URL.
No
Contact email
Listing exposes a contact email.
Yes
Keyword in name
Case-insensitive substring match in the name.
—
Keyword in description
Case-insensitive substring match in the description.
—
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
—
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
78.7

These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.