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+
10
3
Open Page Rank 8+
50
5
Open Page Rank 7+
135
22
Open Page Rank 6+
250
34
Open Page Rank 5+
443
49
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
3,338
43
United States
1,478
232
Brazil
897
678
India
1,011
79
Germany
951
114
United Kingdom
947
114
France
802
118
Canada
754
126
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, 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.