Express vs Koa
Head-to-head usage across the sites we track.
Top sites by authority
Express · Koa · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
70
0
Open Page Rank 8+
813
0
Open Page Rank 7+
2,340
0
Open Page Rank 6+
3,777
0
Open Page Rank 5+
5,713
0
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Express · Koa · share of sites in each country using one or the other
United States
38,574
2
India
23,764
3
United Kingdom
16,896
2
Brazil
15,921
2
Germany
15,170
2
Canada
14,018
2
France
13,689
2
Spain
12,088
3
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Express | Koa |
|---|---|---|
| LCP | 2.2 s | 1.5 s |
| INP | 100 ms | 87 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 650 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.