# Codeforces Calendar Button

> Adds Google and Apple Calendar buttons for upcoming Codeforces contests.

Canonical page: [https://chrome-stats.com/d/codeforces-calendar-button](https://chrome-stats.com/d/codeforces-calendar-button)

## Overview

- **ID:** `codeforces-calendar-button`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Darek
- **Category:** other
- **Daily users:** 2
- **Version:** 1.0.0
- **Last updated:** 2026-02-03
- **First published:** 2026-01-31
- **Size:** 23 KB
- **Data as of:** 2026-09-15
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/codeforces-calendar-button/)

## Rankings

- #68,875 — Overall
- #95 — calendar

## Permissions and access

### Content script matches

- `codeforces.com`

## Safety

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

### Analysis details

- Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
- 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/codeforces-calendar-button)