Flits vs Vitals
Head-to-head usage across the sites we track.
Top sites by authority
Flits · 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+
1
6
Open Page Rank 6+
1
9
Open Page Rank 5+
4
29
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Flits · Vitals · share of sites in each country using one or the other
United States
190
3,566
United Kingdom
73
1,463
India
105
1,304
Canada
87
1,060
Germany
55
990
France
53
979
Australia
46
984
Spain
32
663
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Flits | Vitals |
|---|---|---|
| LCP | 1.9 s | 1.6 s |
| INP | 100 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.