Content Security Policy Blocking Pixels: How to Fix It
Fix tracking pixels blocked by Content Security Policy: read the console error, update script-src, connect-src, img-src and frame-src, and test in report-only.
Fundamentals guides
Debugging techniques, privacy, consent and server-side tracking for every platform.
How to Check Which Tracking Pixels and Events a Website Fires
See exactly which tracking pixels and events any website fires, using DevTools Network filters, each platform's helper extension and GTM preview mode.
Pixel Tracking in Single-Page Apps: Fix Missing Page Views
Fix pixels in React, Next.js and Vue apps that only fire PageView once: track route changes with GTM History Change or router hooks, without duplicates.
Pixel Tracking Launch Checklist: Test Before You Spend on Ads
A pre-launch pixel checklist: one base code per platform, correct events and parameters, server dedup, consent, test purchases and click IDs that survive.
Why Browser Pixels Lose Data: Ad Blockers, ITP and Consent
Why browser pixels miss conversions: ad blockers, Safari ITP cookie limits, consent rejection and iOS ATT, plus what server-side tracking can and cannot fix.