What powers co-sei.co.jp?
Last seen Jun 2026 · 8 technologies across 4 categories
Analytics
Google Analytics
since Apr 2026
Microsoft Clarity
since Apr 2026
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Tag managers
Google Tag Manager
since Apr 2026
Audience
- 84% phone
- 14% desktop
- 2% tablet
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.59 / 10 · ranked #820,503 of all domains
26 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- CDN: Akamai
- Weight: 4.6 MB · 130 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- detected core-js Apr 2026
- detected Facebook Pixel Apr 2026
- detected Google Analytics Apr 2026
- detected Google Tag Manager Apr 2026
- detected Microsoft Clarity Apr 2026