What powers jan39.com?
Last seen Jun 2026 · 23 technologies across 13 categories
Advertising
Google AdSense
since Jun 2022
Twitter Ads
since Jul 2021
Analytics
Google Analytics
since Jan 2019
CDN
Cookie compliance
Funding Choices
since Feb 2024
Font scripts
Google Font API
since Jun 2022
Hosting
Sakura Internet
since Aug 2022
JavaScript libraries
Maps
Google Maps
since Jan 2019
Miscellaneous
Open Graph
since Sep 2022
Security
Cloudflare Bot Management
since Mar 2025
reCAPTCHA
since Jun 2022
UI frameworks
Web servers
Nginx
since Jan 2019
Widgets
Twitter
since Jan 2019
Audience
- 71% phone
- 29% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.40 / 10 · ranked #1,001,103 of all domains
39 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 3.7 MB · 188 requests
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare Bot Management May 2026
- detected Twitter Jan 2026
- detected Twitter Ads Jan 2026
- dropped Google Tag Manager Dec 2025
- dropped PHP Dec 2025
- dropped Twitter Dec 2025
- dropped Twitter Ads Dec 2025
- dropped Cloudflare Bot Management Nov 2025
- detected Google Font API Nov 2025
- detected Google Hosted Libraries Nov 2025
- detected Google Maps Nov 2025
- detected lit-element Nov 2025
- detected lit-html Nov 2025