TagAudit's free scan loads a site in a real browser and matches its network traffic and page source against 120+ tool signatures: analytics, tag managers, ad pixels, session replay, A/B testing, consent platforms and CDPs. The report lists each tool found, its ID where one can be read, and what the consent test saw of it.
What we check
| Check |
|---|
| Each tool found: name, category, and whether it loads from the page source or at runtime |
| Its ID where the tool exposes one (GA4, GTM, Google Ads, Meta pixel and others), otherwise the request it made, where one was seen (a product code shaped like a GA4 ID can be listed too) |
| What the consent test saw of each tool |
| Third-party hosts no signature matched, listed so nothing is hidden |
Tools by category
Signature counts on 12 October 2026.
| Category | Signatures |
|---|---|
| Analytics | 31 |
| Advertising | 19 |
| A/B testing | 15 |
| Consent platforms | 15 |
| Marketing / CRM | 15 |
| Session replay | 12 |
| Tag management / CDP | 11 |
| Chat | 7 |
| Monitoring | 3 |
| Attribution | 3 |
What this can't tell you
- An ID for every tool. Some tools don't expose one in the browser.
- Anything behind a login, or server-to-server.
- Sites whose bot protection blocks the scanner. These are turned away.