Elm vs Ruby
Head-to-head usage across the sites we track.
Top sites by authority
Elm · Ruby · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
3
94
Open Page Rank 8+
4
1,463
Open Page Rank 7+
8
4,577
Open Page Rank 6+
11
7,723
Open Page Rank 5+
13
11,830
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Elm · Ruby · share of sites in each country using one or the other
United States
49
81,570
United Kingdom
42
32,043
India
29
31,121
Canada
25
28,481
Germany
37
24,686
France
54
24,562
Spain
31
20,611
Japan
21
20,589
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Elm | Ruby |
|---|---|---|
| LCP | 1.9 s | 1.7 s |
| INP | 100 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 600 ms | 700 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.