Carrot

Fast and accurate rating predictor for Codeforces
What is Carrot?
"Carrot" is a Firefox add-on designed to enhance the experience with Codeforces ranklists. During active contests, it calculates rating changes according to current standings, showing them in a new column, and for finished contests, it displays final deltas of each contestant. Also, it provides real-time data regarding the delta required to rank up. Its other features, such as toggling visibility of different columns according to the user preference, make viewing ranklists more manageable. Note that its accuracy varies due to the recent changes in the rating system.

Add-on stats

By: meooow
Rating: 4.89 (9)
Version: 0.6.7 (Last updated: 2024-09-29)
Creation date: 2020-04-05
Weekly download count: 119
Firefox on Android: No
Risk impact: Low risk impact
Risk likelihood: Moderate risk likelihood
Manifest version: 2
Permissions:
  • storage
  • unlimitedStorage
  • *://*.codeforces.com/*
Size: 35.28K

Other platforms

Carrot (v0.6.7)
4.18 (57) 40,000
Not available on Edge
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Add-on 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.

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User reviews



you better be predicting right, according to you I'll be hitting pupil, it's better turns out to be true,
by pvcodes, 2024-01-15
View all user reviews

Add-on safety

Risk impact

Carrot requires very minimum permissions.

Risk likelihood

Carrot is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

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