What powers class.co.jp?
Last seen Jun 2026 · 22 technologies across 14 categories
Analytics
Google Analytics
since May 2019
CDN
jsDelivr
since Feb 2026
CMS
WordPress
since May 2019
Databases
MySQL
since May 2019
Font scripts
Google Font API
since Sep 2025
JavaScript frameworks
JavaScript libraries
Marketing automation
Shanon
since Feb 2022
Miscellaneous
Open Graph
since Sep 2022
Performance
LazySizes
since Sep 2025
Programming languages
PHP
since May 2019
UI frameworks
Web servers
Nginx
since May 2019
WordPress plugins
TablePress
since Feb 2022
WP-PageNavi
since Feb 2022
Audience
- 79% desktop
- 21% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.80 / 10 · ranked #1,985,836 of all domains
14 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.5 s |
| INP | 25 ms |
| CLS | 0.25 |
| TTFB | 1400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 8.4 MB · 100 requests
- WordPress theme: class · all themes
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| class.co.jp | 16 |
| www.class.co.jp | 16 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped RSS Mar 2026
- detected GSAP Feb 2026
- detected jsDelivr Feb 2026
- detected Splide Feb 2026
- dropped All in One SEO Nov 2025
- detected Autoptimize Sep 2025
- detected Google Font API Sep 2025
- detected LazySizes Sep 2025