What powers harpercollins.co.jp?
Last seen Jun 2026 · 23 technologies across 14 categories
Advertising
FreakOut
since Feb 2022
Yahoo Advertising
since Apr 2022
Analytics
Google Analytics
since Jan 2019
CDN
Google Hosted Libraries
since Feb 2022
jsDelivr
since Oct 2022
CMS
WordPress
since Jan 2025
Databases
MySQL
since Jan 2025
Ecommerce
Cart Functionality
since Oct 2022
EC-CUBE
since Jan 2019
Font scripts
Google Font API
since Sep 2020
JavaScript libraries
Operating systems
CentOS
since Sep 2019
Programming languages
Security
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since Jan 2019
Web server extensions
Web servers
Nginx
since Jan 2025
Audience
- 71% phone
- 29% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.61 / 10 · ranked #811,234 of all domains
36 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 22.4 MB · 157 requests
- Structured data: JSON-LD
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| harpercollins.co.jp | 19 |
| www.harpercollins.co.jp | 13 |