What powers doubleday.jp?
Last seen Aug 2026 · 38 technologies across 16 categories
Advertising
Analytics
Google Ads Conversion Tracking
since Aug 2021
Google Analytics
since Jan 2019
Matomo Analytics
since Jul 2024
Microsoft Clarity
since Feb 2024
CDN
cdnjs
since Jul 2024
Cloudflare
since Jul 2024
Google Hosted Libraries
since Jul 2024
jQuery CDN
since Feb 2022
jsDelivr
since Jul 2020
Unpkg
since Jul 2024
Ecommerce
Cart Functionality
since Aug 2020
Future Shop
since Aug 2026
Font scripts
Google Font API
since Jul 2024
JavaScript frameworks
Emotion
since Aug 2026
Hogan.js
since Jan 2019
React
since Dec 2024
styled-components
since Dec 2024
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Payment processors
Amazon Pay
since Jul 2021
Programming languages
Java
since Sep 2021
RUM
New Relic
since Sep 2024
Security
HSTS
since Jul 2024
Segmentation
Adobe Audience Manager
since Apr 2022
Tag managers
Google Tag Manager
since Jan 2019
Video players
Web servers
Apache HTTP Server
since Jan 2019
Nginx
since Jul 2024
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 87% phone
- 13% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.94 / 10 · ranked #619,767 of all domains
41 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 26.5 MB · 253 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Aug 2026.
Subdomains
| Host | Techs |
|---|---|
| www.doubleday.jp | 25 |
| www.onlineshop.doubleday.jp | 21 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Emotion Aug 2026
- detected Future Shop Aug 2026
- detected cdnjs Jul 2026
- detected Cloudflare Jul 2026
- detected Criteo Jul 2026
- detected Google Font API Jul 2026
- detected Google Hosted Libraries Jul 2026
- detected HSTS Jul 2026
- detected Matomo Analytics Jul 2026
- detected New Relic Jul 2026
- detected Nginx Jul 2026
- detected Plyr Jul 2026
- detected React Jul 2026
- detected styled-components Jul 2026
- detected Swiper Jul 2026
- detected Unpkg Jul 2026
- detected YouTube Jul 2026
- dropped U-KOMI Nov 2025