What powers castella.website?
Last seen Aug 2026 · 21 technologies across 12 categories
Advertising
Google Ads
since Jan 2023
Yahoo Advertising
since Jan 2023
Analytics
Google Ads Conversion Tracking
since Jan 2023
Google Analytics
since Sep 2020
CDN
Amazon CloudFront
since Nov 2022
cdnjs
since Feb 2025
Cloudflare
since Feb 2025
Google Hosted Libraries
since Feb 2022
Ecommerce
Cart Functionality
since Sep 2020
MakeShop
since Sep 2022
JavaScript libraries
Load balancers
Amazon ALB
since Sep 2021
Miscellaneous
PaaS
Amazon Web Services
since Sep 2021
Payment processors
Amazon Pay
since Jun 2024
Performance
Priority Hints
since Nov 2025
Tag managers
Google Tag Manager
since May 2022
Web servers
Apache HTTP Server
since Sep 2020
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Aug 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 86% phone
- 11% desktop
- 2% tablet
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.85 / 10 · ranked #1,871,229 of all domains
23 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- CDN: Amazon CloudFront
- Weight: 2.1 MB · 61 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Full technology history →
Report an incorrect detection
Recent changes
- dropped core-js Aug 2026
- dropped Matomo Analytics Aug 2026
- dropped Plyr Aug 2026
- dropped YouTube Aug 2026
- detected core-js Dec 2025
- detected Matomo Analytics Dec 2025
- detected Plyr Dec 2025
- detected YouTube Dec 2025
- detected Priority Hints Nov 2025