GA4 Live Debugger & DataLayer Inspector

Real-time GA4 debugger & dataLayer inspector. Catch PII leaks, audit ecommerce, and block hits right from the Chrome Side Panel.

Monitor, inspect, and troubleshoot Google Analytics 4 (GA4) network hits, your website's dataLayer, and Tealium UDOs in real-time. Instantly detect PII leaks, broken ecommerce events, and Shopify Web Pixel issues. GA4 Live Debugger is a free, privacy-first Chrome extension built for analysts, developers, and marketers. Brought to you by the creators of the featured GA4 Optimizer extension, this tool brings analytics debugging out of the messy network tab and into a beautifully structured, accessible interface. Simple by default, powerful under the hood: We believe you shouldn't have to open DevTools just to check a tag. Use our convenient Side Panel for quick, lightweight validation alongside your website. For power users needing deep technical inspection, our dedicated DevTools tab and Console integrations provide the ultimate analytics workspace. 🚨 AUTOMATED PAYLOAD WARNINGS & AUDITING We don't just show you the data; we audit the network requests for you. The extension automatically warns you about: • Live PII Leak Detection: Protect your analytics account. Scans real-time hits and flags emails or phone numbers leaking into URLs, event parameters, and product details. • GA4 Property Auditor: Reads your server-delivered GA4 settings to warn if Google Signals is disabled, Email Redaction is off, or if conflicting Enhanced Measurement events are active. • Cross-Domain & Session Guard: Spots broken Cross-Domain linking (_gl drops) and mid-session Client ID / Session ID loss. • Oversized Payloads: Flags batch requests exceeding GA4's 130KB limit before Google rejects them. • Mixed Implementations: Warns you if you are firing hits via both a tag manager and hardcoded gtag.js. • Environment & Placement Warnings: Detects if staging/preview snippets were accidentally pushed to production, or if tracking scripts block GTM in the DOM. • Duplicate Page Views: Automatically flags if multiple page_view events fire for the same Measurement ID on a single page load. • Missing Consent Warnings: Warns you if hits are firing without any Consent Mode signals attached. ⚡ DATALAYER, SHOPIFY & TEALIUM DIAGNOSTICS ✦ Shopify DataLayer Inspector & API Support: Seamlessly decodes Shopify's isolated Custom Pixel sandboxes. Monitors the native Customer Events API and flags missing referrers or iframe URLs that break storefront reports. ✦ Tealium UDO Tracking: Native interception for Tealium iQ. Monitor client-side utag.view and utag.link events seamlessly alongside your GA4 feeds. ✦ SPA Navigation Auditing: Building with React, Vue, or Next.js? Catches Stale page_location variables, SPA Referrer Drops, and Race Conditions where tags fire before the pageview. ✦ DataLayer Push Debugging & Typo Catcher: Flags near-miss typos in your pushes (e.g., "add_to_crt") so tags don't fail silently. ✦ E-Commerce Schema Validation: Automatically catches missing ecommerce objects and missing transaction_ids in your dataLayer pushes. ✦ Ghost DataLayer Detection: Instantly flags if an ad blocker (like uBlock or Brave) is preventing tracking scripts from loading. ✦ "Copy as JS Snippet": One-click export of dataLayer payloads into formatted, reproducible JavaScript snippets. 🔥 TOP DEBUGGING FEATURES ✦ Accessible Side Panel & Flexible DevTools: Choose your workspace! Inspect hits instantly in the Side Panel, or use our dedicated DevTools tab featuring a customizable split-pane layout. ✦ Enterprise-Grade Console Logging: Toggle console logging to stream beautifully formatted, color-coded GA4 payloads and dataLayer pushes directly into your standard Chrome console. ✦ Google Consent Mode V2 Decoding: Stop guessing if your consent tags are working. Decodes complex gcs and gcd payload parameters into plain English (granted/denied) for every hit. ✦ Campaign & UTM Extraction: Stop squinting at massive URL strings. Automatically extracts UTM parameters, Google Ads IDs (gclid, gbraid), and social click IDs (fbclid, ttclid). ✦ Built-in Analytics Blocking: Stop polluting your live production data! A dedicated "Block" toggle prevents your QA testing hits from reaching Google Analytics. ✦ DataLayer-to-GA4 Linking: Click a hit to jump to the dataLayer.push it correlates with, matched by event name and parameters. ✦ Advanced Routing & sGTM Classification: Categorizes hit transports into routing types: Client-Side, Google Tag Gateway, 1st-Party sGTM, Hosted sGTM Providers, and Self-Hosted sGTM. 🤝 ENTERPRISE TEAM COLLABORATION ✦ Team Sync via Google Sheets: Define your custom events, parameters, and measurement IDs in a Google Sheet and sync them directly into the extension for your team. ✦ Hover Tooltips: Your entire team will see your company's custom data dictionary as hover tooltips right inside the debugger feed. ✦ Measurement ID Labelling: Assign friendly names to your Measurement IDs (e.g., "G-12345" becomes "Production Site"). 🔒 PRIVACY FIRST & 100% LOCAL • Your data never leaves your browser. All tracking payloads, dictionary definitions, and dataLayer events are processed and stored strictly on your local machine. We do not track you, we do not use databases, and we do not collect your analytics data. • Why does Chrome warn that this extension can "read and change all your data"? Because this is a debugging tool, it requires access to monitor network requests (to catch GA4 hits) and inspect the dataLayer. No data is ever collected, tracked, or sent to any external servers. 🚀 WANT MORE FROM GA4? If you love this tool, check out our sister extension: GA4 Optimizer: Power Tools for Google Analytics. It adds 25+ UI features directly inside the GA4 interface, including Custom Metrics, YoY Presets, and Exit Reports! (GA4 Live Debugger is an independent software tool and is not developed, affiliated with, or endorsed by Google. Google Analytics™ and Google Tag Manager™ are trademarks of Google LLC.)