core-js vs @sulu/web
Head-to-head usage across the sites we track.
Top sites by authority
core-js · @sulu/web · 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
1
Open Page Rank 7+
25,753
1
Open Page Rank 6+
55,778
4
Open Page Rank 5+
106,331
12
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 · @sulu/web · share of sites in each country using one or the other
United States
1,295,217
26
India
433,567
20
Brazil
406,300
8
United Kingdom
402,603
18
Germany
384,505
71
France
315,055
32
Italy
302,259
37
Canada
295,823
9
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | core-js | @sulu/web |
|---|---|---|
| LCP | 2 s | 1.4 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 700 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.