CF-Predictor
Developer Tools
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
Users
50K
Rating
4.1
Reviews
171
7D Growth
0|0%
Stable signalNo paid features detectedMedium-risk permissions
Competitive Companion
Parses competitive programming problems and sends them to various tools like CP Editor and CPH.
Users100KCurrent public install base
Rating4.8Store average score
Reviews111Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview
2 assetsCompetitive Companion Media preview
Trend
User growth trend
Review user movement across collected snapshots.
User Growth Over Time
Rating trend
7-day rating trend
View collected rating snapshots from the latest 7-day window to assess rating stability.
7-day rating change
Start
4.77
Latest
4.77
7-day rating change
0.00
2026年7月14日2026年7月20日
Growth overview
Daily, weekly, and monthly growth
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1-day growthFlat
00%7-day growthFlat
00%30-day growthFlat
00%Technical snapshot
Version, languages, and crawl freshness
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Version2.64.0
ManifestV3
Size575KiB
Languages1English (United States)
Published
Store updated
Last crawled
English (United States)
Overview
Product summary
Review the store description, core capabilities, and common use cases.
Competitive Companion parses competitive programming problems and contests and sends the parsed data to various tools like CP Editor and CPH. At the moment it supports 117 online judges, including most major ones like AtCoder and Codeforces.
Using it is very simple. Just install the extension, make sure you got one of the supported tools open, navigate to a problem page and click on the green plus icon in the top-left of your browser. On websites where Competitive Companion is able to parse contests, navigating to the page with all the problems and clicking on the green plus icon will download and parse all problems in the contest at once. You can also use the Ctrl+Shift+U shortcut instead of the green plus icon (configurable on chrome://extensions/shortcuts).
Reviews
Recent review snapshot
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Store average score4.8Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.6Average computed only from synced review bodies below
Reviews with text50Synced review bodies
Total ratings / reviews111Chrome Web Store public rating/review count
Store average score: 4.8. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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Its not working on Orion :( is there any way ?
not working on codechef showing popup error please fix the error. thanks for the nice extension😊
The extension is not parsing test cases. Any idea how to make it work
underrated
very helpful, increased my online contests speed. I have a request to add key short cut to perse using keyboard.
underrated
Very useful
So goood!
Very useful and helpful!
This is the best and most important and must have extension for competitive coders. I cant say it in words enough, but this is epic epic epic epic epic... I just click on the Extension and it automatically adds the Test cases to my VSCode and also creates a separate file for any new code that I am solving. You have to combine this extension with one extension of of VScode(CPH Judge)...And u are in Coding heaven. Trust me It'll save a lot lot of time while in contest.