This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.

What is CF-Predictor?
CF-Predictor is a unique Chrome extension developed for Codeforces users. This tool modifies the contest standings page, displaying approximate rating changes for every contestant, both during and after a contest. No need to wait anxiously for a rating update again with CF-Predictor.
By: Wsl_F
Users: 50,000+
Rating: 4.51 (149)
Version: 1.3.2 (Last updated: 2022-11-28)
Creation date: 2020-06-16
Risk impact: Low risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 3
Host permissions:
Size: 87.00K
Stats date:

Other platforms

CF-Predictor (v1.3.2)
4.71 (45) 1,876+
Not available on Edge
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A huge number of your nerve cells die every time when you wait for a rating update on Codeforces. Stop this! From now you could use this extension, it partly modifies the contest standings page and shows approximate rating changes for every contestant.

User reviews
User reviews summary
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 Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Useful
  • Accurate predictions
  • Relieves anxiety
  • Not working
  • Inaccuracy in ratings
  • Doesn't show rating updates with changed handle
Most mentioned
  • Not working
  • Accurate predictions
  • Useful
Recent reviews
Not Working
by Tafheem Ahemad Tafheem Ahemad, 2024-05-20

it doesn't work
by A. Halym A. Halym, 2023-03-12

One of the worst extensions to be used. Predicted to get +126 in a contest but got -26 instead. the story continues as it shows its inability to predict change in rating points in a mere DIV-3 contest even after 10 hours of finish.
by Debashish Debashish, 2024-05-03
View all user reviews
Risk impact

CF-Predictor is relatively safe to use as it requires very minimum permissions.

Risk likelihood

CF-Predictor has earned a good reputation and can be trusted.

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