Carrot

Rating predictor for Codeforces

Carrot: Codeforces Rating Predictor & Ranklist Enhancer

'Carrot' is a dynamic Chrome extension built to enhance the experience of Codeforces users. It provides real-time analytical data for both active and finished contests through updated ranklists. For active contests, Carrot predicts the changes in ratings, calculates the required delta to rank up, displays them in new columns, and offers real-time calculation. Finished contests feature the final deltas, enabling users to view the rank changes. Carrot also presents a unique 'performance' column that showcases the rating at which one's delta would be zero. With the freedom to toggle columns as per user preference, Carrot ensures an organized and relevant data display. Despite running entirely on browser-based communication, it delivers high accuracy with only minor exceptions due to the new rating system.

Extension stats

By: meooow
Users: 40,000+
Version: 0.6.7 (Last updated: 2024-09-30)
Creation date: 2020-06-07
Risk impact: Low risk impact
Risk likelihood:
Manifest version: 2
Permissions:
  • storage
  • unlimitedStorage
  • *://*.codeforces.com/*
Size: 45.90K

Other platforms

Not available on Android
Carrot (v0.6.7)
4.89 (9) 2,096+
Not available on Edge
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Extension summary

Carrot enhances Codeforces ranklists.

For an active contest: Carrot calculates rating changes according the current standings when you open the ranklist, and displays them in a new column. Carrot also adds a column showing the delta required to rank up. The delta calculation is done in real time a̶n̶d̶ ̶i̶s̶ ̶1̶0̶0̶%̶ ̶a̶c̶c̶u̶r̶a̶t̶e̶ (see note below).

For a finished contest: Carrot displays the final deltas of each contestant in a new column and shows their rank change, if any, in an adjacent column.

For both active and finished contests, Carrot displays a column for performance, the rating at which the delta would be zero.

Each of Carrot's columns can be toggled according to your preference, so as to not clutter the ranklist more than you would like.

Carrot communicates only with the Codeforces API and runs entirely in the browser.

Note: Since all required data is fetched and processed in the browser, Carrot is not ideal if you have a low data cap on your network. If so I recommend using CF-Predictor instead: https://codeforces.com/blog/entry/50411

See more

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • works great
  • awesome software, helps a lot
  • really useful
  • helpful extension for impatient users
  • one of the best extensions for Codeforces users
Cons
  • not working anymore
  • frequent HTTP errors (403, 404)
  • error messages prevent usage
  • issues started recently
Most mentioned
  • not working anymore
  • HTTP error 403
  • HTTP error 404
  • works great
  • awesome software
User reviews
not working anymore
by Nhật Anh Nguyễn, 2024-11-23

not working anymore
by Ezekiel Jovero, 2024-10-19

It still works, but sometime it doesnt
by Kartik Nagrale, 2024-09-21
View all user reviews

Extension safety

Risk impact

Carrot requires very minimum permissions.

Risk likelihood

Carrot has earned a fairly good reputation and likely can be trusted.

Upgrade to see risk analysis details

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