core-js vs qiankun
Head-to-head usage across the sites we track.
Top sites by authority
core-js · qiankun · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
242
0
Open Page Rank 8+
5,108
2
Open Page Rank 7+
26,213
10
Open Page Rank 6+
57,082
14
Open Page Rank 5+
109,074
18
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
core-js · qiankun · share of sites in each country using one or the other
United States
1,479,835
43
India
495,926
28
United Kingdom
457,421
32
Germany
439,161
26
Brazil
420,075
21
France
369,824
27
Canada
341,001
22
Italy
336,371
25
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | core-js | qiankun |
|---|---|---|
| LCP | 2 s | 2.8 s |
| INP | 75 ms | 125 ms |
| CLS | 0 | 0.05 |
| TTFB | 800 ms | 550 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.