What powers codeprep.jp?
Last seen May 2026 · 11 technologies across 11 categories
Analytics
Google Analytics
since Aug 2018
CDN
Amazon S3
since Sep 2022
JavaScript frameworks
React
since Aug 2018
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
PaaS
Amazon Web Services
since Aug 2022
Programming languages
Scala
since Sep 2021
Tag managers
Google Tag Manager
since Aug 2018
Web frameworks
Play
since Sep 2021
Web servers
Nginx
since Aug 2018
Webmail
Google Workspace
since Aug 2022
Audience
- 100% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.69 / 10 · ranked #367,363 of all domains
92 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.9 s |
| INP | 100 ms |
| CLS | 0.35 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.