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
3
Open Page Rank 7+
7
6
Open Page Rank 6+
16
9
Open Page Rank 5+
27
29
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
624
3,566
United Kingdom
233
1,463
India
140
1,304
Canada
214
1,060
Australia
170
984
Germany
92
990
France
96
979
Spain
66
663
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, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.