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
243
Open Page Rank 8+
6
5,081
Open Page Rank 7+
12
26,045
Open Page Rank 6+
17
56,582
Open Page Rank 5+
23
107,942
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
498
1,320,418
India
244
439,882
Brazil
152
411,231
United Kingdom
423
404,005
Germany
659
391,462
France
277
311,727
Canada
207
298,167
Italy
380
291,018
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, Aug 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 |