gtm-performance-audit
GTM Performance Audit
Analyze Google Tag Manager implementations for performance impact using Chrome DevTools MCP.
Philosophy
Tag managers are powerful but can silently degrade performance. Every tag has a cost.
Core Beliefs
- Measure Tag Impact Individually: Each tag's cost must be measured, not assumed
- Container Size Is a Leading Indicator: Large containers correlate with poor performance
- Triggers Are the Multiplier: Inefficient triggers amplify tag cost exponentially
- Server-Side Is the Future: Move data collection off the main thread when possible
Why GTM Audits Matter
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