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
12
Open Page Rank 5+
4
33
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
149
3,333
United Kingdom
65
1,391
India
90
1,306
Canada
72
987
Germany
41
970
Australia
41
946
France
36
922
Italy
39
682
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Flits | Vitals |
|---|---|---|
| LCP | 1.8 s | 1.5 s |
| INP | 100 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 500 ms | 500 ms |
Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.