CF AC Companion

Name: CF AC Companion
Author: Nasif Shahrier Nafi

Compact ratings, tag controls, solved-state feedback, timers, and Gym/Mashup support for Codeforces.Lightweight CF productivity toolkit: adds rating reveals, per-problem timers, tag toggles, and solved-state feedback to Codeforces.

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Features & Capabilities

CF AC Companion is a lightweight productivity toolkit designed to enhance your experience on Codeforces. It helps competitive programmers focus on solving problems efficiently without spoilers or distractions.

Key Features:

Compact Ratings & Tag Controls: Toggle problem tags and ratings instantly to avoid spoilers while practicing.
Solved-State Feedback: Visually track and highlight which problems you have already conquered.
Per-Problem Timers: Monitor how long you spend on a problem directly on the page to improve time management.
Gym/Mashup Support: Fully compatible with standard problem sets as well as Codeforces Gym and Mashup contests.

User Growth & Download Statistics

Add-on

By:

Nasif Shahrier Nafi

Daily users:

Version:

1.0.0 Last updated: 2026-06-10

Version code:

6295536

Creation date:

2026-06-07

Risk:

Permissions:

Host permissions:

https://codeforces.com/*

Content scripts matches:

codeforces.com

Size:

2.27MB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-18

Compare stats and ranking:

Ranking

# 142,958 ▲ 3,234

Other rankings

#206 in programmer keyword 7 ▼ 1

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:

Nasif Shahrier Nafi

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/cf-ac-companion/

Is CF AC Companion 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.

CF AC Companion 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.

CF AC Companion is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
High **** ********* *** ******** ****** *** ********** *** *** ** ****** ** *****
High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****