What powers karuta.org?
Last seen Jun 2026 · 13 technologies across 9 categories
Advertising
i-mobile
since Jul 2022
Twitter Ads
since Jul 2021
Analytics
Google Analytics
since Jul 2019
Snowplow Analytics
since Apr 2021
CDN
Cloudflare
since Mar 2025
Font scripts
Google Font API
since Jul 2019
JavaScript libraries
Miscellaneous
HTTP/3
since Jul 2025
Security
Cloudflare Bot Management
since Mar 2025
Web servers
LiteSpeed
since Jul 2025
Widgets
Twitter
since Jul 2019
Audience
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.42 / 10 · ranked #32,702,338 of all domains
1 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| CLS | 0 |
| TTFB | 1600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 0.6 MB · 48 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
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025
- dropped Apache HTTP Server Aug 2025
- dropped HSTS Aug 2025