Insider vs Tail
Head-to-head usage across the sites we track.
Top sites by authority
Insider · Tail · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
9
3
Open Page Rank 8+
50
5
Open Page Rank 7+
135
20
Open Page Rank 6+
245
32
Open Page Rank 5+
436
48
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Insider · Tail · share of sites in each country using one or the other
Indonesia
3,361
42
United States
1,504
226
Brazil
915
660
India
1,005
84
United Kingdom
970
115
Germany
946
113
France
780
122
Canada
759
124
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Insider | Tail |
|---|---|---|
| LCP | 2.5 s | 2.3 s |
| INP | 200 ms | 150 ms |
| CLS | 0 | 0.05 |
| TTFB | 800 ms | 900 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.