FastComet vs Xserver
Head-to-head usage across the sites we track.
Top sites by authority
FastComet · Xserver · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 8+
2
11
Open Page Rank 7+
3
28
Open Page Rank 6+
3
117
Open Page Rank 5+
6
500
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
FastComet · Xserver · share of sites in each country using one or the other
Japan
39
180,950
United States
450
801
Taiwan
24
838
India
546
250
Indonesia
89
588
South Korea
106
482
Thailand
40
306
Hong Kong SAR China
22
305
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | FastComet | Xserver |
|---|---|---|
| LCP | 2.3 s | 1.6 s |
| INP | 50 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 1200 ms | 700 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.