Extension Tracker

CF-Predictor

50,000 users Rated 3.27 from 172 ratings Last updated 28 Nov 2022

By Wsl_F Live in the Chrome Web Store ocfloejijfhhkkdmheodbaanephbnfhn Search Google ↗ Last checked 7 Nov 2026, 18:05 UTC

The listing

What the Chrome Web Store shows, as of the last check

This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.Summary from the listing
Developer
Wsl_F
Enhanced Safe Browsing
Trusted. What this means →
Category
Productivity › Developer Tools
First published
13 Feb 2017
Last updated
28 Nov 2022
Version
1.3.2
Size
84.96 KiB
Minimum Chrome
88
Languages
1 language

English

Support page
https://codeforces.com/blog/entry/50411?locale=en
See Chrome Web Store page ↗ View its code or download CRX ↗
Users over time As shown on the Chrome Web Store
49K50K51KTracking began 27 Sep 202627 Sep4 Oct11 Oct18 Oct25 Oct1 Nov2026-09-27: 50,000 users2026-09-28: 50,000 users2026-10-05: 50,000 users2026-10-11: 50,000 users2026-10-18: 50,000 users2026-10-24: 50,000 users2026-10-31: 50,000 users2026-11-07: 50,000 users50,00049K50K51KTracking began27 Sep11 Oct25 Oct2026-09-27: 50,000 users2026-09-28: 50,000 users2026-10-05: 50,000 users2026-10-11: 50,000 users2026-10-18: 50,000 users2026-10-24: 50,000 users2026-10-31: 50,000 users2026-11-07: 50,000 users50K
Average rating
3.504.0027 Sep11 Oct25 Oct3.273.504.0027 Sep11 Oct25 Oct3.27
Number of ratings
17017527 Sep11 Oct25 Oct17217017527 Sep11 Oct25 Oct172
New version One point per check. Source: the extension's public Chrome Web Store listing.
Show the numbers
CheckedUsersRatingRatings
2026-11-0750,0003.27172
2026-10-3150,0003.27172
2026-10-2450,0003.27172
2026-10-1850,0003.27172
2026-10-1150,0004.08172
2026-10-0550,0004.08172
2026-09-2850,0004.08172
2026-09-2750,0004.08172
Users, 7 days
No change
since a week ago
Users, 30 days
No change
+0.0%
Rank
#2,466
by users, of 292,131 extensions
In its category
#222
of 30,442 in Developer Tools

What changed

Every change found on a check, newest first

No changes found since tracking began on 27 Sep 2026.

Developer history

Moves to another publisher account and new contact emails, newest first

No move to another account and no new contact email since tracking began on 27 Sep 2026.

We know contact emails only by a keyed hash, so they're never shown. Recent account and contact changes →

What it can access

From the extension's manifest, in plain language

Sites
  • https://cf-predictor.wasylf.xyz/cf-predictor.wasylf.xyz
Sites where it runs scripts
  • http://codeforces.com/contest/*/standings*codeforces.com
  • https://codeforces.com/contest/*/standings*codeforces.com

About this data

Collected from the extension's public Chrome Web Store listing. It's checked every week, because it has 1,000 or more users, and again whenever a new version appears. Last checked 7 Nov 2026, 18:05 UTC; next check around 15 Nov 2026.

How we collect the data

Cite this page

Citation
Extension Tracker. “CF-Predictor” (ocfloejijfhhkkdmheodbaanephbnfhn). Chrome Web Store data, last checked 2026-11-07. https://extensiontracker.com/extension/ocfloejijfhhkkdmheodbaanephbnfhn. Accessed 2026-11-13.
BibTeX
@misc{extensiontracker_ocfloejijfhhkkdmheodbaanephbnfhn,
  title   = {CF-Predictor (ocfloejijfhhkkdmheodbaanephbnfhn)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-11-07},
  url     = {https://extensiontracker.com/extension/ocfloejijfhhkkdmheodbaanephbnfhn},
  urldate = {2026-11-13}
}

The data is free to reuse under CC BY 4.0.

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