Java vs WebAssembly
Head-to-head usage across the sites we track.
Top sites by authority
Java · WebAssembly · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
129
9
Open Page Rank 8+
2,282
24
Open Page Rank 7+
8,817
38
Open Page Rank 6+
15,329
64
Open Page Rank 5+
23,495
89
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Java · WebAssembly · share of sites in each country using one or the other
United States
104,685
427
India
47,632
279
United Kingdom
34,317
270
Germany
34,304
244
Canada
30,484
234
Brazil
29,569
409
Indonesia
29,625
234
France
28,165
220
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Java | WebAssembly |
|---|---|---|
| LCP | 1.9 s | 2.9 s |
| INP | 75 ms | 150 ms |
| CLS | 0 | 0.05 |
| TTFB | 800 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.