basket.js vs core-js
Head-to-head usage across the sites we track.
Top sites by authority
basket.js · core-js · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
1
242
Open Page Rank 8+
6
5,039
Open Page Rank 7+
12
25,753
Open Page Rank 6+
18
55,778
Open Page Rank 5+
24
106,331
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
basket.js · core-js · share of sites in each country using one or the other
United States
478
1,295,217
India
243
433,567
Brazil
156
406,300
United Kingdom
418
402,603
Germany
648
384,505
France
285
315,055
Italy
396
302,259
Canada
205
295,823
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | basket.js | core-js |
|---|---|---|
| LCP | 1.8 s | 2 s |
| INP | 100 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 800 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
basket.js to core-js
| Domain | When |
|---|---|
| asia-sky.de | Mar 2026 |