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
5,108
Open Page Rank 7+
12
26,213
Open Page Rank 6+
18
57,082
Open Page Rank 5+
24
109,074
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
593
1,479,835
India
260
495,926
United Kingdom
470
457,421
Germany
761
439,161
Brazil
170
420,075
France
342
369,824
Canada
247
341,001
Italy
445
336,371
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, 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.
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 |
| hotel-emmental.ch | Aug 2025 |