What powers fkr.or.jp?
Last seen Jun 2026 · 19 technologies across 14 categories
Advertising
Twitter Ads
since Jun 2021
Analytics
Google Analytics
since Jan 2019
Microsoft Clarity
since May 2021
Authentication
Facebook Login
since Jun 2021
CDN
Cloudflare
since Mar 2025
Unpkg
since Dec 2024
Font scripts
Google Font API
since Apr 2021
Hosting
Sakura Internet
since Aug 2022
Issue trackers
Sentry
since Feb 2021
JavaScript graphics
Google Charts
since Jan 2019
JavaScript libraries
Lightbox
since Jan 2026
Security
Cloudflare Bot Management
since Mar 2025
Tag managers
Google Tag Manager
since Jan 2019
UI frameworks
Bootstrap
since Apr 2021
Web servers
Nginx
since Jan 2019
Widgets
Twitter
since Jan 2019
Audience
- 52% phone
- 48% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.60 / 10 · ranked #815,962 of all domains
31 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 2.3 MB · 104 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- detected Lightbox Jan 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025