# What CMS Is This

> Detect which CMS a site is using with the help of WhatCMS.org

Canonical page: [https://chrome-stats.com/d/what-cms-is-this](https://chrome-stats.com/d/what-cms-is-this)

## Overview

- **ID:** `what-cms-is-this`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Who Hosts This
- **Category:** web-development,other
- **Daily users:** 897
- **Weekly downloads:** 12
- **Rating:** 4.00 / 5 (2 ratings)
- **Version:** 0.2resigned1
- **Last updated:** 2024-04-25
- **First published:** 2018-06-11
- **Size:** 153 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/what-cms-is-this/)
- **Website:** [https://whatcms.org/](https://whatcms.org/)

## Description

### What CMS Is This Chrome Extension

Discover the content management system (CMS) used by any website instantly with the What CMS Is This extension. Powered by WhatCMS.org, this handy tool helps web developers, marketers, and curious users identify the CMS behind a site without leaving their browser. 

Simply click the extension icon while browsing a site, and it will reveal the CMS powering the site — saving time and enhancing your workflow. It's ideal for competitive analysis, research, or learning about the tools businesses use to build their online presence.

Whether you're exploring WordPress, Joomla, Drupal, or any other popular CMS, What CMS Is This makes detection seamless.

## Rankings

- #3,488 — Overall
- #216 — detect

## Permissions and access

### Permissions

- `activeTab`
- `tabs`
- `*://*/*`

## 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/what-cms-is-this)