Websites Powered by core-js
16,630,013 websites tracked using core-js (JavaScript libraries) · github.com
core-js is a JavaScript library used to add functionality to web pages. Its official site is github.com. PoweredBy tracks the websites that use core-js across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the javascript libraries ecosystem.
Usage trend
2M
4M
6M
Aug 2021
Nov 2022
Jan 2024
Apr 2025
Jun 2026
Domains observed using core-js in each month's HTTP Archive crawl,
Aug 2021 to Jun 2026 · peak 5,779,339 in Oct 2024. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 2 s
INP 75 ms
CLS 0
TTFB 800 ms
Median site among 5,218,063 core-js sites with Chrome UX data, p75 values, Jun 2026.
Top countries
United States
1,479,835
India
495,926
United Kingdom
457,421
Germany
439,161
Brazil
420,075
France
369,824
Canada
341,001
Italy
336,371
Sites using core-js by audience country, Chrome UX Report.
Top sites by authority
9+
65% · 242 of 372 sites
8+
67% · 5,108 of 7,677 sites
7+
57% · 26,213 of 45,712 sites
6+
52% · 57,082 of 110,136 sites
5+
44% · 109,074 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running core-js in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using core-js
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 401 | jamanetwork.com | 8.87/10 | 888,800 | 459,729 | Sep 2021 |
| 402 | bmj.com | 8.87/10 | 191,800 | 113,110 | Sep 2021 |
| 403 | cam.ac.uk | 8.87/10 | 208,200 | 35,354 | Aug 2021 |
| 404 | sueddeutsche.de | 8.87/10 | 11,300 | 26,267 | Sep 2021 |
| 405 | medlineplus.gov | 8.87/10 | 19,077,400 | 1,663,537 | Sep 2021 |
| 406 | cargo.site | 8.86/10 | 2,300 | 1,803 | Sep 2021 |
| 407 | myportfolio.com | 8.86/10 | - | - | Aug 2021 |
| 408 | optimizely.com | 8.86/10 | 149,400 | 9,101 | Sep 2021 |
| 409 | site.com | 8.86/10 | - | 1 | Sep 2021 |
| 410 | us.com | 8.86/10 | 32 | 9 | Aug 2021 |
| 411 | nami.org | 8.86/10 | 626,800 | 117,511 | Sep 2021 |
| 412 | intel.com | 8.86/10 | 1,129,900 | 230,322 | Aug 2021 |
| 413 | matterport.com | 8.86/10 | 15,700 | 8,593 | Sep 2021 |
| 414 | libsyn.com | 8.86/10 | 3,900 | 1,232 | Sep 2021 |
| 415 | eff.org | 8.86/10 | 73,200 | 30,008 | Nov 2023 |
| 416 | axios.com | 8.86/10 | 1,395,400 | 616,835 | Oct 2021 |
| 417 | coe.int | 8.86/10 | 138,700 | 44,475 | Sep 2021 |
| 418 | shorturl.at | 8.86/10 | 61,100 | 1,340 | Sep 2023 |
| 419 | purdue.edu | 8.86/10 | 744,800 | 169,159 | Aug 2021 |
| 420 | northwestern.edu | 8.86/10 | 193,400 | 45,922 | Aug 2021 |
| 421 | uspto.gov | 8.86/10 | 808,300 | 111,978 | Sep 2021 |
| 422 | govinfo.gov | 8.86/10 | 535,400 | 309,455 | Aug 2022 |
| 423 | cancer.gov | 8.86/10 | 4,680,800 | 325,886 | Aug 2021 |
| 424 | smh.com.au | 8.86/10 | 190,800 | 204,181 | Sep 2021 |
| 425 | statuspage.io | 8.85/10 | - | - | Aug 2021 |
| 426 | rutube.ru | 8.85/10 | 25,800 | 104,216 | Sep 2021 |
| 427 | cvent.com | 8.85/10 | 722,300 | 253,379 | Aug 2021 |
| 428 | g2.com | 8.85/10 | 471,800 | 215,138 | Sep 2021 |
| 429 | codepen.io | 8.85/10 | 51,600 | 48,841 | Sep 2021 |
| 430 | proofpoint.com | 8.85/10 | 122,900 | 22,948 | Aug 2021 |
| 431 | podbean.com | 8.85/10 | 34,900 | 28,468 | Sep 2021 |
| 432 | myspace.com | 8.85/10 | 132,400 | 39,199 | Sep 2021 |
| 433 | parliament.uk | 8.85/10 | 264,200 | 39,936 | Sep 2021 |
| 434 | ilo.org | 8.85/10 | 55,900 | 30,140 | Sep 2021 |
| 435 | iea.org | 8.85/10 | 168,000 | 79,019 | Sep 2021 |
| 436 | heart.org | 8.85/10 | 3,203,900 | 465,174 | Sep 2021 |
| 437 | politico.eu | 8.85/10 | 177,300 | 83,364 | Sep 2021 |
| 438 | umd.edu | 8.85/10 | 253,300 | 15,690 | Sep 2021 |
| 439 | japanpost.jp | 8.85/10 | 55 | 78 | Sep 2021 |
| 440 | acs.org | 8.85/10 | 801,500 | 102,932 | Sep 2021 |
| 441 | news.com.au | 8.85/10 | 494,400 | 340,842 | Sep 2021 |
| 442 | elegantthemes.com | 8.84/10 | 62,800 | 40,626 | Sep 2021 |
| 443 | thetrevorproject.org | 8.84/10 | 177,300 | 31,601 | Sep 2021 |
| 444 | themeforest.net | 8.84/10 | 104,700 | 47,964 | Sep 2021 |
| 445 | elementor.com | 8.84/10 | 134,600 | 72,114 | Aug 2021 |
| 446 | brevo.com | 8.84/10 | 36,700 | 8,656 | Jun 2023 |
| 447 | note.com | 8.84/10 | 14,300 | 36,011 | Sep 2021 |
| 448 | intuit.com | 8.84/10 | 808,900 | 37,782 | Aug 2021 |
| 449 | mapy.cz | 8.84/10 | 300 | 1,167 | Sep 2021 |
| 450 | arstechnica.com | 8.84/10 | 397,800 | 354,569 | Oct 2021 |
| 451 | marketwatch.com | 8.84/10 | 7,176,800 | 686,875 | Aug 2021 |
| 452 | buzzfeed.com | 8.84/10 | 2,987,800 | 1,687,461 | Sep 2021 |
| 453 | copyright.gov | 8.84/10 | 202,900 | 63,143 | Sep 2021 |
| 454 | livejournal.com | 8.84/10 | 7,200 | 712 | Aug 2021 |
| 455 | politico.com | 8.84/10 | 1,665,600 | 563,907 | Sep 2021 |
| 456 | foxnews.com | 8.84/10 | 3,935,900 | 1,382,455 | Aug 2021 |
| 457 | semanticscholar.org | 8.84/10 | 167,300 | 308,945 | Sep 2021 |
| 458 | sciencedaily.com | 8.84/10 | 273,400 | 186,069 | Sep 2021 |
| 459 | ouest-france.fr | 8.84/10 | 53,500 | 79,938 | Sep 2021 |
| 460 | ufl.edu | 8.84/10 | 241,600 | 3,624 | Aug 2021 |
| 461 | ucsd.edu | 8.84/10 | 48,100 | 2,389 | Aug 2021 |
| 462 | ubc.ca | 8.84/10 | 14,500 | 2,813 | Aug 2021 |
| 463 | jst.go.jp | 8.84/10 | 2,400 | 870 | Sep 2021 |
| 464 | typekit.com | 8.83/10 | - | 7 | Sep 2021 |
| 465 | redhat.com | 8.83/10 | 290,500 | 84,884 | Aug 2021 |
| 466 | snapchat.com | 8.83/10 | 1,352,500 | 774,347 | Aug 2021 |
| 467 | sap.com | 8.83/10 | 526,000 | 58,757 | Aug 2021 |
| 468 | anthropic.com | 8.83/10 | 160,200 | 82,836 | Apr 2023 |
| 469 | airtable.com | 8.83/10 | 68,900 | 10,477 | Aug 2021 |
| 470 | shutterstock.com | 8.83/10 | 14,545,700 | 6,372,891 | Aug 2021 |
| 471 | moz.com | 8.83/10 | 122,600 | 23,687 | Sep 2021 |
| 472 | hootsuite.com | 8.83/10 | 90,400 | 26,573 | Sep 2021 |
| 473 | thehill.com | 8.83/10 | 1,116,800 | 483,815 | Sep 2021 |
| 474 | elpais.com | 8.83/10 | 156,800 | 265,475 | Sep 2021 |
| 475 | medicalnewstoday.com | 8.83/10 | 12,563,500 | 2,957,191 | Sep 2021 |
| 476 | dw.com | 8.83/10 | 482,700 | 286,700 | Sep 2021 |
| 477 | nrw.de | 8.83/10 | - | - | Sep 2021 |
| 478 | amazon.es | 8.83/10 | 58,500 | 122,650 | Sep 2021 |
| 479 | amazon.in | 8.83/10 | 422,400 | 578,789 | Aug 2021 |
| 480 | illinois.edu | 8.83/10 | 47,000 | 4,065 | Aug 2021 |
| 481 | ct.gov | 8.83/10 | 4,800 | 35 | Sep 2021 |
| 482 | ucdavis.edu | 8.83/10 | 383,600 | 93,475 | Aug 2021 |
| 483 | unc.edu | 8.83/10 | 342,800 | 27,928 | Aug 2021 |
| 484 | uscourts.gov | 8.83/10 | 1,639,600 | 209,380 | Sep 2021 |
| 485 | weather.gov | 8.83/10 | 11,573,700 | 1,001,922 | May 2022 |
| 486 | tokyo.lg.jp | 8.83/10 | - | - | Sep 2021 |
| 487 | tripod.com | 8.82/10 | - | - | May 2022 |
| 488 | js.org | 8.82/10 | 2 | 5 | Aug 2021 |
| 489 | bigcommerce.com | 8.82/10 | 88,600 | 17,983 | Sep 2021 |
| 490 | klarna.com | 8.82/10 | 497,200 | 448,641 | Aug 2021 |
| 491 | tableau.com | 8.82/10 | 261,800 | 56,830 | Sep 2021 |
| 492 | borlabs.io | 8.82/10 | 190 | 807 | Aug 2022 |
| 493 | gotowebinar.com | 8.82/10 | - | - | Sep 2021 |
| 494 | qz.com | 8.82/10 | 228,300 | 175,282 | Sep 2021 |
| 495 | ey.com | 8.82/10 | 243,500 | 104,187 | Sep 2021 |
| 496 | youradchoices.ca | 8.82/10 | 63 | 78 | Sep 2021 |
| 497 | radiofrance.fr | 8.82/10 | 34,200 | 52,450 | Sep 2021 |
| 498 | aarp.org | 8.82/10 | 1,984,100 | 653,556 | Aug 2021 |
| 499 | asu.edu | 8.82/10 | 144,700 | 4,208 | Aug 2021 |
| 500 | maryland.gov | 8.82/10 | 173,300 | 7,828 | Aug 2021 |
Open Page Rank is the domain's authority score (0 to 10, from the open web link graph); the list is ordered by it and covers sites seen in recent crawls. Visits and keywords are estimated US organic search figures.
Download top 10,000 as CSV (zip) →
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