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Is Google Analytics installed on this site?

Paste any URL. We read the page source and tell you whether Google Analytics is there, plus the measurement ID if we find one.

Free, no signup. We read only public page content.

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How to know if a website uses Google Analytics (GA4)

Open the page's source (Ctrl+U, or Cmd+Option+U on a Mac) and search for G-, gtag, or google-analytics.com. If Google Analytics 4 is installed you'll find a measurement ID like G-ABCDE12345, loaded via gtag('config', 'G-…') or googletagmanager.com/gtag/js?id=G-…, and the page sends data to google-analytics.com/g/collect. Don't want to dig through code? Paste the URL above.

One catch: the Google tag (gtag.js) can also run Google Ads (an AW- ID) with no Analytics at all, so the loader alone doesn't prove GA. A G- measurement ID is what confirms GA4 is really there.

1

Read the page source

Right-click the page, choose “View page source” or press Ctrl+U, and search for G- or gtag('config'. A G- ID means GA4 is on the page.

2

Check the Network tab

Open DevTools (F12), go to Network, filter for collect, then reload. A request to google-analytics.com/g/collect with a tid=G-… parameter confirms GA4 is sending data.

3

Use Google Tag Assistant

Google's Tag Assistant lists the Google tags on a page, including GA4, and shows the events firing. Useful when you want to see what's being measured, not just whether GA exists.

4

Paste it above

The fastest option when you just want a yes or no and the measurement ID. No extension, no DevTools, works on any URL.

questions

Google Analytics, answered.

GA4 uses a measurement ID like G-ABCDE12345. The older Universal Analytics used UA-XXXXXXX-Y, but Google shut that down in 2023, so most live sites now use a G- ID.
No. Google Analytics measures traffic and events; Google Tag Manager is a container that loads tags, often including Analytics. A site can run either one without the other. Check a site for Google Tag Manager →
Not exactly. The Google tag (gtag.js) is one snippet that can send data to Google Analytics, Google Ads, or both. Seeing gtag.js alone doesn't mean Analytics is running, it might be set up only for Google Ads (an AW- ID). A G- measurement ID is what confirms GA4.
It may load through Google Tag Manager or a consent platform, fire only after a visitor accepts cookies, or run server-side. Our checker renders the page and watches its network requests, which catches most cases. A request to google-analytics.com/g/collect is the giveaway.
Yes. The Google Analytics snippet sits in public page source, so anyone can see whether GA is present and its measurement ID. You can't see their reports or data, only that it's installed.
The check is free and reads only public page source. We don't save the URLs you enter. Google Analytics itself is also free from Google.