Websites Powered by Day.js
139,528 websites tracked using Day.js (JavaScript libraries) · github.com
Day.js is a JavaScript library used to add functionality to web pages. Its official site is github.com. PoweredBy tracks the websites that use Day.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
20K
40K
60K
Mar 2019
Dec 2020
Feb 2023
Nov 2024
Aug 2026
Domains observed using Day.js in each month's HTTP Archive crawl,
Mar 2019 to Aug 2026 · peak 50,801 in Jun 2026. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.7 s
INP 75 ms
CLS 0
TTFB 700 ms
Median site among 55,278 Day.js sites with Chrome UX data, p75 values, Aug 2026.
Top countries
United States
14,927
Japan
9,148
Taiwan
8,478
India
5,745
United Kingdom
4,842
Germany
4,620
France
3,976
Brazil
3,785
Sites using Day.js by audience country, Chrome UX Report.
Top sites by authority
9+
8% · 31 of 372 sites
8+
4% · 337 of 7,677 sites
7+
2% · 967 of 45,712 sites
6+
1% · 1,606 of 110,136 sites
5+
<1% · 2,370 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Day.js in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Day.js
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 201 | pref.aichi.jp | 8.36/10 | 440 | 254 | Oct 2024 |
| 202 | cisecurity.org | 8.35/10 | 54,300 | 22,048 | Jun 2026 |
| 203 | kew.org | 8.35/10 | 180,000 | 35,250 | Feb 2025 |
| 204 | rescue.org | 8.35/10 | 111,600 | 43,157 | Dec 2023 |
| 205 | philips.com | 8.35/10 | 20,400 | 7,843 | Jul 2021 |
| 206 | uv.es | 8.35/10 | 19,100 | 19,126 | Nov 2025 |
| 207 | equifax.com | 8.34/10 | 1,185,500 | 96,300 | Jul 2021 |
| 208 | thalia.de | 8.34/10 | 3,900 | 19,538 | Dec 2025 |
| 209 | sdsu.edu | 8.34/10 | 61,800 | 25,733 | Jul 2026 |
| 210 | switch.ch | 8.33/10 | 99 | 113 | Apr 2025 |
| 211 | fidelity.com | 8.33/10 | 5,306,600 | 511,524 | Sep 2025 |
| 212 | deakin.edu.au | 8.33/10 | 8,100 | 7,868 | Mar 2019 |
| 213 | unipi.it | 8.32/10 | 1,500 | 1,950 | Jan 2023 |
| 214 | rijksmuseum.nl | 8.32/10 | 31,100 | 6,477 | Mar 2025 |
| 215 | cafe24.com | 8.31/10 | 6 | 6 | Sep 2022 |
| 216 | lilly.com | 8.30/10 | 205,900 | 25,401 | Oct 2022 |
| 217 | isc2.org | 8.30/10 | 59,000 | 20,996 | Mar 2026 |
| 218 | okstate.edu | 8.30/10 | - | - | Apr 2025 |
| 219 | miteco.gob.es | 8.30/10 | 3,600 | 8,935 | Aug 2026 |
| 220 | rstudio.com | 8.29/10 | 1 | 2 | Oct 2022 |
| 221 | exteriores.gob.es | 8.29/10 | 112,100 | 43,638 | Jul 2026 |
| 222 | ncaa.com | 8.28/10 | 6,489,100 | 711,917 | Sep 2022 |
| 223 | dmm.com | 8.28/10 | 130 | 101 | Jan 2021 |
| 224 | fourseasons.com | 8.28/10 | 1,335,800 | 224,708 | Mar 2024 |
| 225 | jma.or.jp | 8.28/10 | 24 | 46 | Aug 2025 |
| 226 | umanitoba.ca | 8.28/10 | 25,600 | 17,260 | Jun 2025 |
| 227 | tsukuba.ac.jp | 8.28/10 | 1,800 | 517 | Jun 2025 |
| 228 | firebaseapp.com | 8.27/10 | - | - | May 2023 |
| 229 | bindsite.jp | 8.27/10 | - | - | Oct 2020 |
| 230 | thermofisher.com | 8.27/10 | 1,077,200 | 197,459 | Jul 2021 |
| 231 | united.com | 8.27/10 | 7,996,800 | 634,886 | Oct 2022 |
| 232 | stonybrook.edu | 8.27/10 | 351,000 | 92,449 | Feb 2024 |
| 233 | pdx.edu | 8.27/10 | 152,000 | 32,376 | Apr 2025 |
| 234 | ou.edu | 8.27/10 | 382,900 | 71,501 | Aug 2022 |
| 235 | cea.fr | 8.27/10 | 2,000 | 1,809 | Jan 2026 |
| 236 | phila.gov | 8.27/10 | 643,900 | 199,195 | Sep 2021 |
| 237 | slu.se | 8.27/10 | 2,400 | 1,343 | May 2025 |
| 238 | act.org | 8.26/10 | 531,600 | 88,851 | Oct 2023 |
| 239 | unlv.edu | 8.26/10 | 319,800 | 86,297 | May 2024 |
| 240 | chop.edu | 8.26/10 | 1,318,800 | 212,894 | Mar 2023 |
| 241 | hse.ru | 8.25/10 | 1,500 | 2,325 | Jun 2026 |
| 242 | roberthalf.com | 8.25/10 | 416,700 | 103,254 | Jan 2023 |
| 243 | uhc.com | 8.25/10 | 1,985,900 | 339,971 | Jul 2023 |
| 244 | shopee.co.id | 8.25/10 | 27,300 | 103,068 | Jun 2024 |
| 245 | toyota.com | 8.25/10 | 5,810,100 | 482,191 | Dec 2022 |
| 246 | naic.org | 8.25/10 | 250 | 50 | Sep 2025 |
| 247 | furunavi.jp | 8.25/10 | 16 | 46 | Apr 2025 |
| 248 | nagoya-u.ac.jp | 8.25/10 | 11 | 36 | Nov 2020 |
| 249 | disney.co.jp | 8.24/10 | 610 | 239 | Oct 2022 |
| 250 | wayne.edu | 8.24/10 | 157,600 | 24,727 | Jan 2026 |
| 251 | migros.ch | 8.24/10 | 1,900 | 4,229 | Aug 2023 |
| 252 | sub.jp | 8.24/10 | - | - | May 2022 |
| 253 | uj.edu.pl | 8.24/10 | 360 | 132 | Jul 2026 |
| 254 | yamaha.com | 8.23/10 | 246,300 | 20,008 | Feb 2025 |
| 255 | iccsafe.org | 8.23/10 | 183,500 | 22,617 | Oct 2025 |
| 256 | pwc.co.uk | 8.23/10 | 4,400 | 5,454 | May 2023 |
| 257 | site123.me | 8.23/10 | - | - | Sep 2020 |
| 258 | sheffield.ac.uk | 8.23/10 | 48,800 | 24,975 | Apr 2025 |
| 259 | swisscom.ch | 8.23/10 | 3,000 | 1,840 | Dec 2024 |
| 260 | michaels.com | 8.22/10 | 2,613,500 | 1,251,003 | Feb 2025 |
| 261 | sports.gouv.fr | 8.22/10 | 520 | 789 | Apr 2024 |
| 262 | inrs.fr | 8.22/10 | 2,200 | 1,410 | Dec 2023 |
| 263 | upf.edu | 8.22/10 | 4,700 | 3,555 | May 2024 |
| 264 | chiba.lg.jp | 8.22/10 | - | - | Apr 2026 |
| 265 | leidenuniv.nl | 8.22/10 | - | - | Oct 2021 |
| 266 | fhnw.ch | 8.22/10 | 400 | 746 | Feb 2025 |
| 267 | usbank.com | 8.21/10 | 3,144,500 | 373,789 | Aug 2022 |
| 268 | cfainstitute.org | 8.21/10 | 125,400 | 34,362 | Nov 2024 |
| 269 | nmsu.edu | 8.21/10 | 30,700 | 9,989 | Aug 2023 |
| 270 | uba.ar | 8.21/10 | 670 | 586 | Apr 2024 |
| 271 | freddiemac.com | 8.19/10 | 828,800 | 22,984 | Jul 2021 |
| 272 | uni-konstanz.de | 8.18/10 | 2,100 | 1,030 | Mar 2025 |
| 273 | hslu.ch | 8.18/10 | 290 | 438 | Jul 2026 |
| 274 | pref.ibaraki.jp | 8.17/10 | 180 | 70 | Mar 2026 |
| 275 | blizzard.com | 8.16/10 | 59,200 | 7,073 | Jul 2021 |
| 276 | gsk.com | 8.16/10 | 91,800 | 24,487 | Jul 2026 |
| 277 | au.com | 8.15/10 | 3,100 | 1,693 | Jan 2024 |
| 278 | pwc.de | 8.15/10 | 6,100 | 760 | Mar 2024 |
| 279 | aeroport.fr | 8.15/10 | 98 | 153 | Jan 2026 |
| 280 | opentext.com | 8.13/10 | 75,000 | 28,095 | Nov 2024 |
| 281 | jpn.org | 8.13/10 | - | - | Dec 2020 |
| 282 | pr.gov | 8.11/10 | 6,100 | 2,445 | Apr 2025 |
| 283 | luc.edu | 8.11/10 | 179,100 | 55,589 | Sep 2025 |
| 284 | newschool.edu | 8.11/10 | 61,500 | 35,182 | Feb 2025 |
| 285 | psl.eu | 8.10/10 | 5,400 | 3,246 | May 2025 |
| 286 | fau.edu | 8.10/10 | 327,500 | 90,347 | Aug 2022 |
| 287 | kia.com | 8.09/10 | 1,418,800 | 185,250 | May 2023 |
| 288 | healio.com | 8.09/10 | 338,000 | 117,466 | Sep 2025 |
| 289 | chicagobooth.edu | 8.09/10 | 62,900 | 23,293 | Sep 2025 |
| 290 | univ-amu.fr | 8.09/10 | 1,900 | 761 | Jul 2025 |
| 291 | libretexts.org | 8.08/10 | 6,200 | 2,036 | Jun 2026 |
| 292 | gvsu.edu | 8.08/10 | 178,500 | 70,793 | Aug 2022 |
| 293 | louisville.edu | 8.08/10 | 244,200 | 78,167 | Feb 2026 |
| 294 | shopee.vn | 8.07/10 | 33,100 | 32,184 | Jun 2024 |
| 295 | arcep.fr | 8.07/10 | 100 | 309 | May 2024 |
| 296 | uni-graz.at | 8.07/10 | 570 | 361 | Aug 2025 |
| 297 | umt.edu | 8.07/10 | 154,100 | 52,031 | Apr 2025 |
| 298 | ubalt.edu | 8.06/10 | 13,900 | 5,949 | Mar 2025 |
| 299 | chewy.com | 8.06/10 | 3,112,500 | 585,906 | Oct 2021 |
| 300 | uantwerpen.be | 8.06/10 | 2,900 | 2,097 | Dec 2024 |
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) →