Free tool · website analytics
Is GA4 installed correctly?
Most SMEs think they have analytics — half don't, or it's broken. Check your Google Analytics 4 setup in seconds: missing tags, duplicates, and dead Universal Analytics, with plain-English fixes.
Free — enter your email to run it
Check your Google Analytics 4 setup
Broken or missing GA4 means you're flying blind. Enter your details to run the free checker — I'll email your result and how to fix anything it finds.
What it checks
A quick, honest read on your analytics setup:
Questions
How do I know if GA4 is installed?
Paste your website URL above. The checker reads your page's HTML and looks for the GA4 tag (gtag.js with a G-XXXXXXXX measurement ID), a GA4 config call, Google Tag Manager, and any leftover Universal Analytics. It returns a clear pass/warn/fail checklist.
It says GA4 wasn't detected but I'm sure it's installed — why?
GA4 is often fired through Google Tag Manager, which injects the tag in the browser after the page loads. We read the server HTML, so a GTM-injected GA4 tag may not appear here. If GTM is present we say so and flag it as 'verify in Realtime' rather than a fail. Always confirm live hits in your GA4 Realtime report.
What's the difference between GA4 and Universal Analytics?
Universal Analytics (UA-XXXXXXX) was the old version — it stopped processing data in July 2024 and is effectively dead. GA4 (G-XXXXXXXX) is the current version. If the checker finds UA still on your site, it's collecting nothing and should be removed.
Why does correct analytics matter?
If GA4 is missing, misconfigured, or double-counting, every decision you make on that data is wrong — you can't see which pages convert, where traffic comes from, or whether a change worked. Clean measurement is the foundation for any growth, AI or automation work.
This tool fetches the public page you enter and inspects its HTML for analytics tags. It stores nothing unless you ask for the emailed report, and it reads only what any browser can see. Reviewed & updated June 2026.