Based on 37 and 3047 real audits
| Metric | Gatsby | Google Tag Manager | Winner |
|---|---|---|---|
| Performance | 42 | 41 | Gatsby |
| Accessibility | 91 | 88 | Gatsby |
| Best Practices | 90 | 87 | Gatsby |
| SEO | 93 | 92 | Gatsby |
| Security | 66 | 67 | Google Tag Manager |
| TTFB | 253ms | 433ms | Gatsby |
| Composite | 75 | 74 | Gatsby |
Gatsby outperforms Google Tag Manager in 6 of 7 categories, with a stronger composite score (75 vs 74). Google Tag Manager leads in security.
Choose Gatsby when your primary concern is server response time and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Google Tag Manager when your primary concern is security. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 37 audited Gatsby sites and 3047 audited Google Tag Manager sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →
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