What powers proten.jp?
Last seen Jun 2026 · 7 technologies across 6 categories
Analytics
Google Analytics
since Jan 2021
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Tag managers
Google Tag Manager
since Jan 2021
Video players
YouTube
since Jul 2025
Web servers
Nginx
since Jan 2021
Audience
- 66% desktop
- 34% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.64 / 10 · ranked #2,264,596 of all domains
15 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| CLS | 0 |
| TTFB | 1100 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 26.2 MB · 74 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- dropped cdnjs Aug 2025
- dropped Cloudflare Aug 2025
- dropped Google Font API Aug 2025
- dropped jsDelivr Aug 2025
- dropped Swiper Aug 2025
- dropped Unpkg Aug 2025