Sentry vs Vigil
Head-to-head usage across the sites we track.
Top sites by authority
Sentry · Vigil · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
138
0
Open Page Rank 8+
2,041
1
Open Page Rank 7+
7,254
1
Open Page Rank 6+
13,210
1
Open Page Rank 5+
21,676
1
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Sentry · Vigil · share of sites in each country using one or the other
United States
323,523
2
United Kingdom
95,135
1
India
78,278
2
Canada
75,350
1
Brazil
73,076
1
Germany
70,758
1
France
65,757
1
Japan
51,705
1
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Sentry | Vigil |
|---|---|---|
| LCP | 1.7 s | 3 s |
| INP | 75 ms | 150 ms |
| CLS | 0 | 0.03 |
| TTFB | 600 ms | 800 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.