Codeforces Custom Contests Firefox

Codeforces Custom Contests

By: AvDev
Create custom contests to improve speed, problem solving, and rating!
Codeforces Custom ContestsCodeforces Custom ContestsCodeforces Custom ContestsCodeforces Custom Contests
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Features & Capabilities

Create Custom Codeforces Contests & Improve Your Rating Faster!

Practice smarter, not harder. This extension lets you build personalized contests and analyze your performance to target your weaknesses and climb the ranks.

Features: • Custom Contests - Choose the number of problems, difficulty range, and contest duration to match your goals (speed, problem-solving, endurance, etc.). • Performance Analysis - See which problem tags and difficulty levels are holding you back with in-depth breakdowns of your past contests. • Progress Tracking - Monitor improvements over time and fine-tune your training strategy with real data.

Why Use This Extension? • Focus your practice where it matters most • Eliminate guesswork in your training • Build rating faster with targeted, data-driven prep

This is perfect for anyone looking to accelerate their growth on Codeforces, whether you're aiming for Expert or Grandmaster.

User Growth & Download Statistics

Manifest V3 Add-on
By:
AvDev
Daily users:
28 1
Rating:
4.00
(1)
Version:
1.1.3 Last updated: 2025-06-07
Version code:
5964611
Creation date:
2025-05-09
Risk:
Low risk impact Moderate risk likelihood
Permissions:
Host permissions:
  • *://codeforces.com/*
Content scripts matches:
  • codeforces.com
Size:
456.06KB
Email:
de*****@gmail.com
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-18
Compare stats and ranking:

Ranking

# 20,215 ▲ 269
Other rankings
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Other platforms

Chrome
Codeforces Custom Contests (v1.1.3)
1,000 5.00 (14)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
AvDev
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/codeforces-custom-contests/
Email:
de*****@gmail.com

Permission Change History

2025-05-15: Version 1.0.0 → 1.1.0.0
Add Permissions: storage

User Reviews

This is very good and very useful for practicing. The only problem is that if you restart the page, you lose all your progress in the current contest (because it is directly eliminated). It would be great if the current contest were saved locally so you could access it again even if the PC is turned off, allowing you to continue training despite the same problems!
by Gr*****, 2026-06-02
View all user reviews ›

Is Codeforces Custom Contests Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Codeforces Custom Contests requires very minimum permissions.

Risk impact analysis details
  • High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
  • Low ******* ****** ** *** ********* ******** **************
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

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

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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