What powers seminars.jp?
Last seen Jun 2026 · 27 technologies across 16 categories
Analytics
Google Analytics
since Jun 2018
Microsoft Clarity
since Aug 2022
CDN
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Webpack
since May 2025
Operating Systems
CentOS
since Apr 2018
PaaS
Amazon Web Services
since Aug 2022
Programming languages
Security
Tag managers
Google Tag Manager
since Apr 2018
UI frameworks
Web frameworks
Ruby on Rails
since Jan 2020
Web servers
Apache HTTP Server
since Apr 2018
Webmail
Google Workspace
since Aug 2022
Widgets
Facebook
since Jun 2018
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 87% desktop
- 13% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
5.52 / 10 · ranked #156,530 of all domains
100 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 4.9 MB · 83 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| seminars.jp | 21 |
| www.seminars.jp | 13 |
| mb.seminars.jp | 6 |
| lp.seminars.jp | 4 |
Full technology history →
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Recent changes
- detected core-js Jan 2026
- dropped Cart Functionality Nov 2025