Based on 8 and 63 real audits
| Metric | Google Publisher Tag | Google Tag Manager | Winner |
|---|---|---|---|
| Performance | 30 | 41 | Google Tag Manager |
| Accessibility | 83 | 89 | Google Tag Manager |
| Best Practices | 79 | 88 | Google Tag Manager |
| SEO | 87 | 92 | Google Tag Manager |
| Security | 63 | 65 | Google Tag Manager |
| TTFB | 186ms | 395ms | Google Publisher Tag |
| Composite | 71 | 74 | Google Tag Manager |
Google Tag Manager outperforms Google Publisher Tag in 6 of 7 categories, with a stronger composite score (74 vs 71). Google Publisher Tag leads in TTFB.
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