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+
93
9
Open Page Rank 8+
1,473
24
Open Page Rank 7+
4,626
38
Open Page Rank 6+
7,835
64
Open Page Rank 5+
12,013
89
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
81,172
427
United Kingdom
31,238
270
India
31,163
279
Canada
27,720
234
Germany
24,578
244
France
24,019
220
Japan
20,441
182
Brazil
19,689
409
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Ruby | WebAssembly |
|---|---|---|
| LCP | 1.7 s | 2.9 s |
| INP | 75 ms | 150 ms |
| CLS | 0 | 0.05 |
| TTFB | 700 ms | 600 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.