What powers i-tsu-tsu.co.jp?
Last seen Jun 2026 · 47 technologies across 26 categories
A/B Testing
Google Optimize
since Nov 2022
Advertising
Twitter Ads
since Nov 2023
Analytics
Google Analytics
since Jan 2019
HubSpot Analytics
since Feb 2021
Authentication
Facebook Login
since Oct 2021
CDN
Amazon S3
since Nov 2023
Cloudflare
since Nov 2021
Google Hosted Libraries
since Nov 2023
jsDelivr
since Apr 2023
CMS
WordPress
since Jan 2019
Cookie compliance
HubSpot Cookie Policy Banner
since Jul 2022
Databases
MySQL
since Jan 2019
Ecommerce
Base
since Nov 2023
Cart Functionality
since Aug 2020
Font scripts
Google Font API
since Feb 2020
Hosting
Sakura Internet
since Aug 2022
JavaScript frameworks
GSAP
since Apr 2023
JavaScript libraries
Maps
Google Maps
since Mar 2023
Marketing automation
Miscellaneous
Open Graph
since Sep 2022
PaaS
Amazon Web Services
since Nov 2023
Performance
Priority Hints
since Aug 2025
Programming languages
PHP
since Jan 2019
RUM
New Relic
since Nov 2023
Security
Cloudflare Bot Management
since Nov 2021
reCAPTCHA
since Dec 2023
Tag managers
Google Tag Manager
since Jan 2019
Web servers
Nginx
since Jan 2019
Widgets
Twitter
since Nov 2023
WordPress plugins
WordPress themes
Twenty Sixteen
since Apr 2022
Audience
- 69% phone
- 29% desktop
- 2% tablet
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.70 / 10 · ranked #763,052 of all domains
24 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.6 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 6.8 MB · 120 requests
- WordPress theme: itsutsu · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.i-tsu-tsu.co.jp | 27 |
| shop.i-tsu-tsu.co.jp | 20 |
| en.i-tsu-tsu.co.jp | 18 |
| lesson.i-tsu-tsu.co.jp | 18 |
| schools.i-tsu-tsu.co.jp | 18 |
| online.i-tsu-tsu.co.jp | 10 |
Full technology history →
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Recent changes
- dropped Amazon SES Dec 2025
- dropped Google Workspace Dec 2025
- dropped Zendesk Dec 2025
- dropped TikTok Pixel Nov 2025
- detected Priority Hints Aug 2025