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+
5,039
2
Open Page Rank 7+
25,753
10
Open Page Rank 6+
55,778
13
Open Page Rank 5+
106,331
15
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
1,295,217
36
India
433,567
21
Brazil
406,300
14
United Kingdom
402,603
25
Germany
384,505
23
France
315,055
21
Italy
302,259
19
Canada
295,823
19
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | core-js | qiankun |
|---|---|---|
| LCP | 2 s | 2.7 s |
| INP | 75 ms | 100 ms |
| CLS | 0 | 0.05 |
| TTFB | 800 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.