What powers 303books.jp?
Last seen Jun 2026 · 31 technologies across 21 categories
Advertising
Twitter Ads
since Jun 2021
Affiliate programs
Amazon Associates
since Dec 2021
Analytics
Google Analytics
since Jun 2020
CDN
CMS
WordPress
since Jun 2020
Databases
MySQL
since Jun 2020
JavaScript frameworks
JavaScript libraries
Miscellaneous
PaaS
Amazon Web Services
since Jun 2020
Page builders
WordPress Block Editor
since Sep 2024
Performance
Priority Hints
since Nov 2023
Programming languages
PHP
since Jun 2020
Security
Cloudflare Bot Management
since Mar 2025
reCAPTCHA
since Sep 2024
SEO
UI frameworks
Tailwind CSS
since Aug 2022
Video players
YouTube
since Jun 2021
Web servers
Webmail
Google Workspace
since Aug 2022
Widgets
Spotify Widgets
since Feb 2022
Twitter
since Jun 2021
WordPress plugins
Audience
- 64% phone
- 36% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.69 / 10 · ranked #360,596 of all domains
65 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- CDN: Amazon CloudFront
- Weight: 12.0 MB · 115 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| hontonokoizumisan.303books.jp | 24 |
| 303books.jp | 18 |
| edit.303books.jp | 6 |
Full technology history →
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Recent changes
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025