# CF Randomizer

> Instantly fetch a random, unsolved Codeforces problem based on your target rating and chosen topics.

Canonical page: [https://chrome-stats.com/d/cf-randomizer](https://chrome-stats.com/d/cf-randomizer)

## Overview

- **ID:** `cf-randomizer`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** GodLShounak
- **Category:** web-development,search-tools
- **Daily users:** 1
- **Version:** 1.0
- **Last updated:** 2026-05-13
- **First published:** 2026-05-10
- **Size:** 11 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/cf-randomizer/)

## Description

CF Randomizer is a lightweight, fast extension designed for competitive programmers. Stop wasting time manually searching for the right practice problem on Codeforces.

How it works:
1. Enter your Codeforces handle.
2. Select your desired difficulty rating range (e.g., 1200 to 1600).
3. Enter topics/tags like "dp", "math", or "graphs".
4. Click "Get Random Problem".

The extension cross-references your previously solved problems using the public Codeforces API and opens a new tab with a randomly selected problem that you have not solved yet. It utilizes local browser storage for caching to ensure ultra-fast load times and to prevent spamming the Codeforces API.

## Rankings

- #97,002 — Overall
- #168 — programmer

## Permissions and access

### Permissions

- `tabs`
- `storage`

### Host permissions

- `*://codeforces.com/*`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/cf-randomizer)