Bold Bundles vs Vitals
Head-to-head usage across the sites we track.
Top sites by authority
Bold Bundles · Vitals · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
1
1
Open Page Rank 8+
1
4
Open Page Rank 7+
7
8
Open Page Rank 6+
17
12
Open Page Rank 5+
28
33
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Bold Bundles · Vitals · share of sites in each country using one or the other
United States
529
3,310
United Kingdom
176
1,382
India
116
1,273
Canada
175
993
Australia
143
956
Germany
79
992
France
73
905
Italy
56
674
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bold Bundles | Vitals |
|---|---|---|
| LCP | 1.6 s | 1.6 s |
| INP | 75 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 500 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.