What is Google Tag Manager?

Analytics

Google Tag Manager is an analytics tool: Tag management system by Google. Tech Stack Detector identifies Google Tag Manager on any website by analysing the HTML source.

Google Tag Manager is an analytics tool (Analytics), detected on 88 websites in our index. See websites using Google Tag Manager ↓

CategoryAnalytics
Detection signals1 signal
In our index88 websites

How Tech Stack Detector detects Google Tag Manager

Google Tag Manager is matched from these signals during a single, ordinary page request. Each one contributes to the confidence score shown on a scan.

  • Html PatternGoogle Tag Manager container

Websites using Google Tag Manager

Recently scanned websites where we detected Google Tag Manager. Open one to see its full technology stack.

View all websites using Google Tag Manager

Often used with Google Tag Manager

Technologies most frequently detected alongside Google Tag Manager across scanned websites.

Alternatives to Google Tag Manager

Other Analytics technologies Tech Stack Detector detects: popular alternatives and related tools, most-detected first.

Compare Google Tag Manager

Side-by-side comparisons of Google Tag Manager with other Analytics technologies.

Popular technologies

The technologies most often detected across all websites scanned on Tech Stack Detector.

Frequently asked questions

What is Google Tag Manager?

Google Tag Manager is an analytics tool: Tag management system by Google. Tech Stack Detector identifies Google Tag Manager on any website by analysing the HTML source. Its official website is https://tagmanager.google.com.

How can I tell if a website uses Google Tag Manager?

Enter any URL into Tech Stack Detector and it reports whether Google Tag Manager is present, with a confidence score and the exact evidence it matched. Detection is based on the HTML source. No login or crawling of the site is required.

How many websites use Google Tag Manager?

Google Tag Manager has been detected on 88 websites in the public Tech Stack Detector scan index. This reflects sites that visitors have analysed here, not global market share.

What are some alternatives to Google Tag Manager?

Other Analytics technologies Tech Stack Detector detects include Google Analytics, Microsoft Clarity, Yandex Metrica, Cloudflare Web Analytics, Adobe Analytics and PostHog. You can compare any of them side by side with Google Tag Manager.

Data last updated October 20, 2026 · based on 618 recently scanned websites.