Ruby vs WebAssembly
Head-to-head usage across the sites we track.
Top sites by authority
Ruby · WebAssembly · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
92
9
Open Page Rank 8+
1,463
24
Open Page Rank 7+
4,571
40
Open Page Rank 6+
7,743
64
Open Page Rank 5+
11,847
86
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Ruby · WebAssembly · share of sites in each country using one or the other
United States
81,570
419
United Kingdom
32,043
263
India
31,121
278
Canada
28,481
229
Germany
24,686
235
France
24,562
213
Spain
20,611
195
Japan
20,589
182
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Ruby | WebAssembly |
|---|---|---|
| LCP | 1.7 s | 2.7 s |
| INP | 75 ms | 125 ms |
| CLS | 0 | 0.05 |
| TTFB | 700 ms | 600 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.