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gtm-present

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Use when auditing slow page loads, heavy assets, or rendering delays related to Optimize Google Tag Manager implementation. Verify the actual bottleneck in DevTools, Lighthouse, or field data before recommending changes.

skills/gtm-present/SKILL.md

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# Optimize Google Tag Manager implementation

An unoptimized GTM setup can lead to significant main-thread blocking and increased page weight, slowing down the overall user experience.

## Quick Reference

- Place the GTM script in the `<head>` but audit its impact
- Minimize the number of tags and triggers to reduce execution
- Use Server-Side GTM to offload processing from the client

## Check

Verify that GTM is implemented correctly and evaluate its impact on page performance using Lighthouse.
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