Technology · JavaScript library
Websites using Day.js
As of 2026-10-02, Day.js (JavaScript library) is detected on 12 of the 7,859 popular websites we analysed (0.2%), including alipay.com, weathernews.jp, visualwebsiteoptimizer.com, 24sata.hr and radios.com.br.
Top sites using Day.js (12)
- alipay.com #519
- weathernews.jp #643
- visualwebsiteoptimizer.com #1,385
- 24sata.hr #4,430
- radios.com.br #4,884
- wantgoo.com #5,869
- umt.edu #6,163
- cpbl.com.tw #7,008
- iflscience.com #8,200
- ncaa.com #8,859
- trudvsem.ru #9,325
- exploratorium.edu #9,685
The number is the position in our popularity-ordered sample (1 = most popular).
Technologies often used together with Day.js
| Technology | Sites | Share of Day.js sites |
|---|---|---|
| jQuery | 9 | 75% |
| Google Tag Manager | 7 | 58% |
| cdnjs | 4 | 33% |
| Google Analytics | 4 | 33% |
| Cloudflare | 3 | 25% |
| Nginx | 3 | 25% |
| PHP | 3 | 25% |
| Adobe Fonts | 2 | 17% |
| Bootstrap | 2 | 17% |
| Cloudflare Bot Management | 2 | 17% |
Day.js by site sector
| Sector | Sites with Day.js | Share of sector |
|---|---|---|
| Finance | 1 | 1.0% |
| Education | 2 | 0.8% |
| News | 1 | 0.3% |
| Other | 8 | 0.1% |
| Technology | 0 | <0.1% |
| Entertainment | 0 | <0.1% |
| Social media | 0 | <0.1% |
| Government | 0 | <0.1% |
Day.js by top-level domain
FAQ
- How many popular websites use Day.js?
- As of 2026-10-02, Day.js (JavaScript library) is detected on 12 of the 7,859 popular websites we analysed (0.2%), including alipay.com, weathernews.jp, visualwebsiteoptimizer.com, 24sata.hr and radios.com.br.
- Which are the most popular websites using Day.js?
- alipay.com, weathernews.jp, visualwebsiteoptimizer.com, 24sata.hr, radios.com.br, wantgoo.com, umt.edu, cpbl.com.tw, iflscience.com and ncaa.com, and 2 more (ordered by popularity in our sample, detected 2026-10-02).
- Which kinds of sites use Day.js most?
- By share of sites: finance (1.0%), education (0.8%) and news (0.3%).
- How do I find out what technology a website uses?
- Open the site's page in the Tech Stack Index, or run the Tech Stack Detector API on any domain: it reads the home page HTML and headers and lists the CMS, framework, CDN and analytics with evidence.