emBlue vs Klaviyo
Head-to-head usage across the sites we track.
Top sites by authority
emBlue · Klaviyo · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
1
20
Open Page Rank 8+
1
123
Open Page Rank 7+
5
473
Open Page Rank 6+
12
1,250
Open Page Rank 5+
29
3,055
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
emBlue · Klaviyo · share of sites in each country using one or the other
United States
199
94,562
United Kingdom
41
37,244
Canada
58
29,978
Australia
33
27,541
Germany
56
24,145
France
53
21,230
India
42
20,024
Spain
180
16,028
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | emBlue | Klaviyo |
|---|---|---|
| LCP | 2.7 s | 1.6 s |
| INP | 125 ms | 100 ms |
| CLS | 0.05 | 0 |
| TTFB | 1100 ms | 500 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.