Practical guides to tracking beacons, tag managers, sitemaps, robots.txt, consent banners, and subdomain discovery.
Tracking beacons are the analytics and marketing scripts embedded in web pages. Learn what they are, who sets them, and why auditing them matters.
What Google Tag Manager is, why one GTM container can hide dozens of tags, and how the audit detects containers and their IDs.
GA4 measurement IDs (G-XXXXXXXX), what GA4 tracks, and how the audit detects it — directly installed or via tag manager.
What the Meta Pixel does, how pixel IDs work, and how the audit detects Meta's advertising tracker on any public site.
What the LinkedIn Insight Tag does for B2B marketers, how partner IDs work, and how the audit detects it.
What XML sitemaps are, how sitemap indexes work, and the common issues this audit flags: stale URLs, 404s, and bloated inventories.
What robots.txt does, how Crawl-delay works, and exactly what this crawler honors when it audits your site.
Why consent banners (OneTrust, Cookiebot) matter for beacon audits: tags should fire after consent, and the audit shows what actually loads.
Static HTML scans can't see trackers injected at runtime by tag managers. Here's why, and when to use browser-render mode.
How the audit finds subdomains via Certificate Transparency, urlscan.io, OTX, and DNS probing — plus the honest limitations.