Lazy.js vs RequireJS
Head-to-head usage across the sites we track.
Top sites by authority
Lazy.js · RequireJS · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
66
Open Page Rank 8+
0
1,026
Open Page Rank 7+
0
3,366
Open Page Rank 6+
0
5,789
Open Page Rank 5+
0
8,850
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Lazy.js · RequireJS · share of sites in each country using one or the other
United States
1,114
158,248
United Kingdom
686
46,226
Germany
715
42,885
India
622
35,970
Canada
614
34,211
France
555
31,966
Brazil
441
29,342
Australia
414
22,193
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Lazy.js | RequireJS |
|---|---|---|
| LCP | 2 s | 1.5 s |
| INP | 100 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 900 ms | 600 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.