What powers refs.jp?
Last seen Jun 2026 · 18 technologies across 13 categories
Analytics
Google Analytics
since Feb 2019
CMS
WordPress
since Feb 2019
Databases
MySQL
since Feb 2019
Font scripts
Google Font API
since Jun 2023
Twitter Emoji (Twemoji)
since Feb 2019
Hosting
Sakura Internet
since Aug 2022
JavaScript libraries
Miscellaneous
Open Graph
since Jun 2023
RSS
since Dec 2022
Page builders
WordPress Block Editor
since Jul 2024
Performance
Priority Hints
since Aug 2023
Programming languages
PHP
since Feb 2019
Security
reCAPTCHA
since Sep 2022
Web servers
Nginx
since Feb 2019
WordPress plugins
Smart Slider 3
since Jun 2023
Audience
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.50 / 10 · ranked #6,514,652 of all domains
3 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.8 s |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 4.2 MB · 95 requests
- WordPress theme: refs2023 · all themes
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- detected Twitter Emoji (Twemoji) Dec 2025