Based on 511 and 2 real audits
| Metric | Google Tag Manager | Pure CSS | Winner |
|---|---|---|---|
| Performance | 38 | 30 | Google Tag Manager |
| Accessibility | 88 | 87 | Google Tag Manager |
| Best Practices | 87 | 98 | Pure CSS |
| SEO | 92 | 96 | Pure CSS |
| Security | 65 | 66 | Pure CSS |
| TTFB | 306ms | 223ms | Pure CSS |
| Composite | 73 | 72 | Google Tag Manager |
Pure CSS outperforms Google Tag Manager in 4 of 7 categories, with a stronger composite score (72 vs 73). Google Tag Manager leads in performance, accessibility, composite score.
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