Bold Upsell vs Vitals
Head-to-head usage across the sites we track.
Top sites by authority
Bold Upsell · Vitals · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
2
1
Open Page Rank 8+
7
4
Open Page Rank 7+
12
8
Open Page Rank 6+
23
12
Open Page Rank 5+
44
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 Upsell · Vitals · share of sites in each country using one or the other
United States
1,010
3,310
United Kingdom
314
1,382
India
159
1,273
Canada
335
993
Australia
225
956
Germany
129
992
France
102
905
Spain
79
670
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bold Upsell | Vitals |
|---|---|---|
| LCP | 1.5 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
Bold Upsell to Vitals
| Domain | When |
|---|---|
| kraftathlet.de | Jan 2026 |
| plenitudeatacado.com.br | Jan 2026 |
| garageguys.co.za | Nov 2025 |
| kooji.in | Sep 2025 |