Website Tracking Scanner
Paste a website and this scanner opens it in a real browser and reports the full list of analytics and advertising companies collecting data on it: GA4, Google Ads, the Meta Pixel, TikTok, Pinterest, Microsoft, and more. Most checkers stop there. This one also tells you whether each platform is set up server-side or client-side, because that one distinction decides how much of your marketing data actually survives ad blockers, iOS, and the end of third-party cookies.
What you learn
Every scan gives you the complete tracking picture for a site:
- Every company collecting data, named and grouped, not just the big platforms
- Which ad and analytics platforms are live: GA4, Google Ads, Meta, TikTok, Pinterest, Microsoft
- Whether each one runs server-side or client-side, the difference between data your ad platforms receive and data they lose
- How many of those requests an ad blocker already blocks, and the cookies the site sets
Client-side vs server-side, and why it matters
Client-side tracking runs in your visitor browser and sends data straight to Google, Meta, and the rest. It is the part ad blockers block, iOS trims, and cookie limits erode, and on a typical store that is a double-digit share of conversions your reports never see. Your ad platforms then bid and optimise on incomplete data, which quietly raises your cost per result.
Server-side tracking moves collection to a first-party server you control. The browser sends one clean event to your own domain, and the server passes it to each platform. Ad blockers and browser privacy never touch it. If this scan shows your platforms as client-side, that gap is what server-side tracking closes, and it is costing you real money.
Frequently Asked Questions
Which analytics and advertising companies are collecting data on a website, and whether the major ad platforms (GA4, Google Ads, Meta, TikTok, Pinterest, Microsoft) are set up server-side, which is protected, or client-side, which ad blockers can block.
Client-side tracking is measured in your visitor browser, so ad blockers, iOS, and cookie limits can drop it before your platforms ever count it. Server-side tracking is collected on your own server first, so it keeps working. More complete data means more accurate reporting and lower ad costs.
It usually means you are under-reporting conversions and paying more per result than you need to, because your ad platforms are optimising on partial data. On most stores that is a double-digit share of conversions. It is fixable, and server-side tracking is the fix.
It reflects what the site actually loaded while it was open. A site that only loads its tags after a visitor accepts cookies may show fewer until consent is given, so a store behind a strict consent banner can look lighter than it is.
Any public website, including competitors. Enter the address and the result comes back in under a minute.