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

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2 assets

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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

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Technical snapshot

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Version2.64.0

ManifestV3

Size575KiB

Languages1English (United States)

Published--

Store updated--

Last crawled--

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

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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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method Flange2024年10月18日

很好的插件。支持！

quanheng yang2024年10月15日

I love it!But now,in china luogu isn't support it.

Anurag Banerjee2024年9月29日

Extremly helpful extension for saving time when you practice from sites like Codeforces, AtCoder, and other competitive programming sites.

Ankit Kumar2024年9月6日

Very Helpful

Abhilekh Nayak2024年8月11日

Just WOW

Srichetan Reddy2024年7月27日

Very Helpful

Ayush Singhal2024年7月9日

Please make this available for safari too!!!

Abhinav Shripad2024年6月24日

Make this available in zed too

Hema Sai Dorababu Koppisetti2024年6月4日

It's an awesome and very useful extension , it will surely helps everyone who are doing competitive programming as it helped me a lot and Thank you for this extension.

Bhupendra Singh Dhami2024年2月26日

please make a extension for Leetcode also

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AI product read

Parses competitive programming problems and contests from 117+ online judges and sends the extracted data to local development tools like CP Editor and CPH (Competitive Programming Helper) via localhost HTTP.

Eliminates the manual, tedious process of copying problem statements, sample inputs/outputs, and test cases from competitive programming websites into local coding environments. Provides one-click parsing so contestants can start solving immediately.

User installs extension → navigates to a competitive programming problem page → clicks the green '+' icon (or uses Ctrl+Shift+U) → extension injects content script → page-specific parser extracts problem data (title, constraints, sample I/O, test cases) → parsed JSON is sent via HTTP POST to localhost ports where CP Editor/CPH is listening → local tool auto-sets up the problem for solving.

Target users: Competitive programmers / Algorithm enthusiasts who use local IDEs like CP Editor or CPH for solving problems / Participants in online coding contests

The content.js file is 2MB (minified bundle of all 160+ parsers), which was not fully inspected, but its role is clear from the background.js orchestration and options.js parser list.
External hosts (codejam.googleapis.com, api.tlx.toki.id, resources.beecrowd.com) are used only to fetch problem data from specific judges, not for authentication or payments.

Monetization

No paid features detected

All 'pro' keyword matches are false positives matching fragments of parser class names (e.g., 'AtCoderProblemParser'). No billing, subscription, payment, premium, upgrade, Stripe, PayPal, or license-related code exists anywhere in the source. The extension is fully free and open-source (GitHub repo linked). No features are gated behind payment.

Confidence: 98
Payment platform: --
Source: AI / High
Login required: No
Reason: The extension contains no authentication, login UI, or account management code. It operates entirely locally—parsing problem pages via content scripts and sending parsed JSON data to localhost ports. The only fetch call uses 'credentials: include' to retrieve data from online judge APIs, but the extension itself does not require the user to log in.

Permission risk

Medium-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

扩展能力较强：activeTab、storage、scripting

Publisher

Jasper van Merle

Independent publisher

Email: [email protected]
Phone: --
Address: --

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