What powers jsprimer.net?
Last seen Jun 2026 · 20 technologies across 13 categories
Advertising
Twitter Ads
since Jul 2021
Analytics
Cloudflare Browser Insights
since Nov 2025
Google Analytics
since Jan 2019
Caching
Varnish
since Jan 2019
CDN
Documentation
Docusaurus
since Feb 2019
JavaScript frameworks
React
since Feb 2019
JavaScript libraries
Miscellaneous
PaaS
GitHub Pages
since Jan 2019
Search engines
Security
Cloudflare Bot Management
since Mar 2025
UI frameworks
Widgets
Twitter
since Jan 2019
Audience
- 86% desktop
- 14% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.14 / 10 · ranked #1,357,103 of all domains
57 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 25 ms |
| CLS | 0.15 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- CDN: Cloudflare, Fastly
- Weight: 1.1 MB · 39 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare Bot Management May 2026
- dropped Cloudflare Bot Management Nov 2025
- detected Cloudflare Browser Insights Nov 2025