What powers js-sys.com?
Last seen Jun 2026 · 20 technologies across 11 categories
Analytics
CDN
Font scripts
Google Font API
since Aug 2018
JavaScript libraries
Marketing automation
BowNow
since Feb 2022
Miscellaneous
Open Graph
since Sep 2022
PaaS
Amazon Web Services
since Aug 2023
Security
HSTS
since Aug 2023
Tag managers
Google Tag Manager
since Aug 2018
UI frameworks
Animate.css
since Aug 2018
Web servers
Apache HTTP Server
since Aug 2018
Audience
- 81% desktop
- 19% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.79 / 10 · ranked #1,993,816 of all domains
24 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- CDN: Amazon CloudFront
- Weight: 19.5 MB · 181 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.js-sys.com | 19 |
| js-sys.com | 7 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Moment.js Aug 2025