Free tracking & tag audit
Test your website's tracking, tags & consent setup in seconds
Enter any URL and the Site Inspector checks how Google Tag Manager is running (client-side or server-side), which GA4 streams are firing, whether Google Consent Mode v2 and a cookie consent platform are in place, which pixels are installed, and gives you a 0–100 tracking health score.
Works on any public page. For single-page apps that load tags after JavaScript, use the free browser extension.
What it checks
A full tracking & tag health check
Marketing and analytics break quietly. Tags go missing, consent isn't wired up, and pixels get blocked by browsers. The Site Inspector gives you a fast, honest read on what's actually running on a page.
GTM architecture
Detects Google Tag Manager and whether it runs client-side or through a server-side container on a custom domain.
GA4 analytics
Finds GA4 measurement IDs, how they load, and flags any deprecated Universal Analytics (UA) tags.
Consent Mode v2
Checks for Google Consent Mode v2 and the cookie consent platform (CMP) collecting user choices.
Pixels & tags
Detects Meta, Google Ads, LinkedIn, TikTok, Pinterest and more, and flags which support server-side tracking.
Tech stack
Identifies the CMS, framework or libraries — WordPress, Shopify, Next.js, Webflow and others.
Score & breakpoints
A 0–100 tracking health score with fixes, plus the responsive CSS breakpoints the site is built on.
How it works
Three steps, no sign-up
Paste a URL
Enter any public page — your own site, a competitor, or a client's landing page.
We fetch it server-side
The page is loaded and its GTM container is read to see what tags and consent signals are configured.
Read your score
Get a clear breakdown and a prioritised list of what to fix to improve accuracy and compliance.
Done-for-you service
Move to server-side GTM — done properly
If your inspection shows client-side tags, missing consent, or blocked pixels, I can fix it. I design and implement server-side tracking that is accurate, faster, ad-blocker resistant and privacy-compliant — end to end.
Book a free tracking review →Everything I can help you set up:
- ✓Server-side GTM — server container on your own subdomain, first-party data, longer cookie life.
- ✓Cookie consent management — CMP setup and configuration (Cookiebot, OneTrust, CookieYes and others).
- ✓Google Consent Mode v2 — wired to your CMP so tags respect user choices and Google can model lost conversions.
- ✓GA4 configuration — clean events, conversions, cross-domain and accurate attribution.
- ✓Meta Conversions API (CAPI) — server-side Meta events to recover data lost to ad blockers and iOS.
- ✓Google Ads enhanced conversions — server-side conversion tracking for better bidding and ROAS.
- ✓Other server-side tags — LinkedIn, TikTok, Pinterest, Segment and more routed server-to-server.
- ✓Data layer design — a structured, reliable data layer for e-commerce and lead-gen events.
- ✓Tracking audit & cleanup — remove duplicate, broken and legacy UA tags; document what's live.
- ✓CRO & experimentation — measurement for A/B tests (Convert.com, GA4) so results are trustworthy.
- ✓Privacy compliance — GDPR, UK GDPR and Australia's 2026 Privacy Act reforms.
- ✓Ongoing monitoring — alerts and checks so tracking doesn't silently break again.
For single-page apps
Free browser extension
Some sites load their tags only after JavaScript runs, so a server-side fetch can miss them. The NG Site Inspector Chrome extension runs inside the live page and sees everything after it loads.
NG Site Inspector (Chrome)
Live, in-page analysis of GTM, GA4, Consent Mode, CMP, pixels, tech stack and breakpoints — with the same 0–100 score.
Install: download → unzip → open chrome://extensions → enable Developer Mode → “Load unpacked”.
FAQ
Questions, answered
What does the Site Inspector check?
It fetches the page you enter and reports whether Google Tag Manager runs client-side or server-side, which GA4 measurement IDs are present, whether Google Consent Mode v2 is active, which cookie consent platform (CMP) is used, which third-party pixels are installed and whether they support server-side tracking, the site's technology stack and CSS breakpoints, and an overall 0–100 tracking health score.
What is server-side Google Tag Manager?
Server-side GTM moves tag execution from the visitor's browser to a server container running on your own domain. This improves data accuracy, extends cookie lifetime, reduces the impact of ad blockers and browser tracking prevention (ITP), speeds up your site, and gives you control over what data leaves your infrastructure.
Do I need cookie consent and Google Consent Mode v2?
If you have visitors in the EU, UK or Australia, yes. A cookie consent platform (CMP) collects and stores consent, and Google Consent Mode v2 tells Google tags how to behave when a user declines. Together they keep your analytics and ads compliant while preserving as much measurable data as possible.
Is the Site Inspector free?
Yes — it's completely free, with no sign-up. There's also a free Chrome extension for pages that load tracking after JavaScript runs. If you'd like help implementing the fixes, that's where the paid service comes in.
Why does a site show fewer tags here than I expect?
This tool reads the initial HTML and the GTM container. Sites that inject tags at runtime (single-page apps) or block automated requests may show less. Use the browser extension for a complete, live picture.
Get in touch
Ready to move to server-side tracking?
Tell me about your site and what you want to measure. I'll reply with a plain-English read on your setup and what it would take to fix. No obligation.