PageSourceSearch

JavaScript libraries

Websites using Day.js

Day.js is a 2 kB date library with a Moment.js-compatible API. About 21,878 websites in the PageSourceSearch index contain the code that reveals it; the 50 highest-ranked are listed below.

How is Day.js detected?

The page loads dayjs.min.js and its code calls dayjs(. The discovery keyword is the exact bytes PageSourceSearch looks for in every stored page and script:

dayjs Search the index for it

A literal is matched byte for byte, case-sensitively. Combine it with another keyword, a domain, a kind or a date filter on the search page to narrow the list. About Day.js

Top 50 websites using Day.js

Ranked by the domain's position in the crawl's ranked list (Common Crawl harmonic centrality), highest first. view source opens the stored page or script with the match highlighted. Computed 2026-09-29 19:21:44 UTC.

#WebsiteRankFound in
1 tiktok.com 25 html https://www.tiktok.com/ view source profile
2 thomsonreuters.com 315 js https://legal.thomsonreuters.com/etc…ddc9b3a91ab1e-lc.min.js view source profile
3 hbr.org 340 js https://hbr.org/_next/static/chunks/3clgkfsggsps4.js view source profile
4 kaggle.com 350 js https://www.kaggle.com/static/assets…057.bb5f443d1024926e.js view source profile
5 ourworldindata.org 407 js https://ourworldindata.org/assets/owid.mjs view source profile
6 straitstimes.com 441 js https://www.straitstimes.com/assets/components-JSzoenoU.js view source profile
7 odysee.com 477 js https://odysee.com/public/assets/app-5r5pIz90.js view source profile
8 peatix.com 484 js https://cdn.peatix.com/assets/produc…rofileStore-CBaVsqDc.js view source profile
9 proofpoint.com 501 js https://app.emaildefense.proofpoint.…/575.4ea107ab.chunk.js view source profile
10 forrester.com 552 js https://www.forrester.com/web-fe-central-static/main.js view source profile
11 zeffy.com 577 js https://www.zeffy.com/_next/static/chunks/25kjymel__ygc.js view source profile
12 nyc.gov 592 js https://www.nyc.gov/etc.clientlibs/n…4e4fe2511ec884677298.js view source profile
13 worldcat.org 615 js https://search.worldcat.org/_next/st…604-40360f8f8887a4ac.js view source profile
14 adelaide.edu.au 648 js https://adelaide.edu.au/etc.clientli…b3b1e8e4e10a5-lc.min.js view source profile
15 rt.com 661 html https://www.rt.com/news/ view source profile
16 neocities.org 678 html https://neocities.org/about view source profile
17 globenewswire.com 701 js https://www.globenewswire.com/bundle…pI0GG9VI5NN55UmUCS1c-Y1 view source profile
18 bunny.net 739 js https://dash.bunny.net/chunk-5ZXJFCP4.js view source profile
19 ncaa.com 838 html https://www.ncaa.com/ view source profile
20 usaspending.gov 843 js https://www.usaspending.gov/461.4d36744d160c16fda142.js view source profile
21 hp.com 881 js https://support.hp.com/wcc-assets/sr…_ts.e220623b0d86d7e4.js view source profile
22 ascd.org 911 js https://ascd.org/_next/static/chunks…900-79b3fb13e8f8aa55.js view source profile
23 vedomosti.ru 922 js https://cdn10.vedomosti.ru/1.7.161/a…esCardsList-a3ea2651.js view source profile
24 moe.gov.sg 1,008 js https://www.moe.gov.sg/_next/static/chunks/1b8z4z__gnnuq.js view source profile
25 fastly.com 1,034 js https://manage.fastly.com/_package/c…d34d7f6066df7116/app.js view source profile
26 visa.com 1,113 js https://destinations.visa.com/destin…38a3974c91cdd32ab8c4.js view source profile
27 smotrim.ru 1,144 js https://cdn.smotrim.ru/static/assets/_nuxt/Bz8wT4n7.js view source profile
28 xero.com 1,203 js https://www.xero.com/_next/static/ch…5a4.35c1d43e1080f711.js view source profile
29 geeksforgeeks.org 1,208 js https://assets.geeksforgeeks.org/gfg…451-ea182dc02fadbd7f.js view source profile
30 datatables.net 1,325 js https://cdn.datatables.net/v/dt/mome…/datatables.min.js view source profile
31 business.gov.au 1,432 js https://business.gov.au/content/dist…?bust_js_cache=20:24:08 view source profile
32 hostinger.com 1,494 js https://www.hostinger.com/blog/wp-co…?ver=1790187833 view source profile
33 opendorse.com 1,533 js https://opendorse.com/_next/static/c…app-c5ef69449420eb06.js view source profile
34 deepseek.com 1,842 js https://deepseek.com/_next/static/ch…767-6ac1711026464664.js view source profile
35 vercel.com 1,911 js https://vercel.com/_next/static/immu…/11drcv_usn6zm.js view source profile
36 klarna.com 1,917 js https://owp.klarna.com/static/fabric-16-1429a1c3.js view source profile
37 workday.com 2,054 js https://static.community.workday.com…/coveo/v3/headless.js view source profile
38 instructables.com 2,077 js https://www.instructables.com/assets…/dates-CRce6Lmv.js view source profile
39 nsw.gov.au 2,199 js https://account.service.nsw.gov.au/_…/1ia2qdbsy5cfy.js view source profile
40 appsflyer.com 2,229 js https://cdn.appsflyer.com/auth/vendo…f84575331d9d5812_dev.js view source profile
41 uefa.com 2,273 js https://www.uefa.com/CompiledAssets/…c3613e6ca6613750cdd85ab view source profile
42 abs.gov.au 2,318 js https://www.abs.gov.au/libraries/Hig…/exceljs.min.js?v=1.05 view source profile
43 alipay.com 2,321 html https://www.alipay.com/ view source profile
44 apnic.net 2,341 js https://orbit.apnic.net/static/commu…/js/ProfileSummary.js view source profile
45 cpsc.gov 2,346 html https://www.cpsc.gov/ view source profile
46 itch.io 2,364 js https://static.itch.io/browse_games.min.js?1790228461 view source profile
47 illinois.gov 2,494 js https://www.illinois.gov/etc.clientl…d50985335592166ed10d.js view source profile
48 redbull.com 2,764 js https://www.redbull.com/v3/resources…5d6848f2901db379a6da.js view source profile
49 awin.com 2,772 js https://www.awin.com/assets/eventAgendaBlock.DWkSLxSV.js view source profile
50 headspace.com 2,848 js https://checkout.headspace.com/static/js/index-u1xuQEQz.js view source profile

How it appears in the source

From tiktok.com (html):

.5367b846.js"],"action-bar":["static/js/async/npm-icons-shared.672f2dd1.js","static/js/async/npm-dayjs.22f083e7.js","static/js/async/65728.bf39d898.js","static/js/async/95047.feadcf44.js","static/js/a

See every site: search for dayjs

Questions about finding Day.js

How does PageSourceSearch know a website uses Day.js?
By the source itself: The page loads dayjs.min.js and its code calls dayjs(. PageSourceSearch stores the raw HTML and first-party JavaScript of each crawled site and matches the keyword byte for byte, so every listed site's stored source contains it.
Is this a complete list of websites using Day.js?
No. The page lists the 50 highest-ranked sites in the index whose source holds the keyword, out of about 21,878 websites that do; the count is the index's estimate at the time the list was computed. Run the keyword as a search to page through all of them, or add a kind or date filter.
How do I find websites that use Day.js together with another technology?
Search for both keywords at once: several terms separated by spaces must all be found on the same site, or with the Same page toggle in the same page. For example dayjs with wp-content/plugins/ lists the WordPress sites that use Day.js.