What powers prevaline.jp?
Last seen Aug 2026 · 15 technologies across 11 categories
Advertising
Google Ads
since Dec 2022
Analytics
Google Ads Conversion Tracking
since Sep 2021
Google Analytics
since Sep 2021
CDN
jsDelivr
since Sep 2021
Hosting
Sakura Internet
since Aug 2022
JavaScript frameworks
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Webpack
since Sep 2021
Programming languages
Node.js
since Sep 2021
Tag managers
Google Tag Manager
since Sep 2021
UI frameworks
Vuetify
since Sep 2021
Web servers
Nginx
since Sep 2021
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
- 98% phone
- 2% tablet
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.45 / 10 · ranked #30,108,178 of all domains
0 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.5 s |
| INP | 200 ms |
| CLS | 0.1 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 5.4 MB · 77 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.