GTM Variable Mapper

GTM Variable Mapper is the essential workflow tool for Google Tag Manager specialists, digital analysts, and implementation engineers. If you’ve ever spent minutes manually tracing a deeply nested DataLayer path or trying to sanitize a messy eventModel from Tag Assistant, this extension was built for you. Stop the DataLayer Excavation Don't let mangled JSON or complex nested arrays slow down your tracking audits. GTM Variable Mapper is a high-performance Data Layer debugger designed to visualize and extract variables instantly. Built on Manifest V3, it offers the most secure and fastest way to audit your Google Tag Manager setup. Key Features: God-Mode JSON Parser: Paste raw, unformatted script tags or window.dataLayer snippets directly from the console. Our engine automatically strips comments, flattens newlines, and fixes quote errors that crash standard debuggers. Deep Array Mapping: Recursively crawl and visualize nested objects. No variable is buried too deep—get the exact path for your GTM variables in one click for easy pasting into your workspace. GA4 & Ecommerce Ready: Easily troubleshoot GA4 parameters, ecommerce items, and user identifiers without manual formatting. Bulletproof Sanitization: Automatically handles undefined, NaN, and single-quote errors to ensure your data always maps correctly. Why Use GTM Variable Mapper? Instant Results: Move from raw code to a clean, mapped table in seconds. Privacy-First: Your data never leaves your browser. All parsing happens 100% locally. Clean UI: Spacious table layout with smart text truncation for long variable paths. Free Tier Includes: 3 days Trail. We’ve permanently unlocked 14 essential metrics for all users, including standard Ecommerce variables (item_name, price, currency), User IDs, and Page Context. Upgrade to PRO: Unlock full recursive mapping for unlimited custom variables and advanced event models. Secure, profile-locked licensing via Lemon Squeezy.