Based on 1498 and 3 real audits
| Metric | HTTP/3 | Klaviyo Customer Hub | Winner |
|---|---|---|---|
| Performance | 51 | 27 | HTTP/3 |
| Accessibility | 88 | 89 | Klaviyo Customer Hub |
| Best Practices | 88 | 83 | HTTP/3 |
| SEO | 90 | 94 | Klaviyo Customer Hub |
| Security | 69 | 71 | Klaviyo Customer Hub |
| TTFB | 298ms | 131ms | Klaviyo Customer Hub |
| Composite | 75 | 72 | HTTP/3 |
Klaviyo Customer Hub outperforms HTTP/3 in 4 of 7 categories, with a stronger composite score (72 vs 75). HTTP/3 leads in performance, best practices, composite score.
Choose HTTP/3 when your primary concern is performance and best practices. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Klaviyo Customer Hub when your primary concern is server response time and SEO. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 1498 audited HTTP/3 sites and 3 audited Klaviyo Customer Hub 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 →
Small sample: one or both technologies have fewer than 10 audited sites. Treat these numbers as directional — medians stabilize around 20–30 audits per side.
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