# Key Master

> Key Master is an on page key price checker for the Steam store supporting G2Play, G2A and Kinguin

Canonical page: [https://chrome-stats.com/d/key-master](https://chrome-stats.com/d/key-master)

## Overview

- **ID:** `key-master`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Ducttape warrior
- **Category:** shopping,games-entertainment
- **Daily users:** 12
- **Rating:** 4.00 / 5 (3 ratings)
- **Version:** 1.1.1resigned1
- **Last updated:** 2024-04-25
- **First published:** 2016-03-02
- **Size:** 1.03 MB
- **Data as of:** 2026-09-12
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/key-master/)
- **Website:** [https://downstairs.be](https://downstairs.be/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/key-master/privacy/](https://addons.mozilla.org/firefox/addon/key-master/privacy/)

## Description

Key Master is an on page key price checker add-on for Firefox that provides easy access to G2Play, G2A, and Kinguin key market platforms directly from the Steam store. It helps you quickly compare game prices and make the transition between stores seamlessly.

## Rankings

- #30,674 — Overall

## Permissions and access

### Permissions

- `tabs`
- `https://*/*`
- `http://*/*`
- `https://g2api.downstairs.be/*`

### Content script matches

- `store.steampowered.com`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low 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/key-master)