What powers kuraka.co.jp?
Last seen Jun 2026 · 27 technologies across 15 categories
Analytics
Google Analytics
since Aug 2018
CDN
cdnjs
since Aug 2022
Cloudflare
since Aug 2022
Google Cloud CDN
since Apr 2025
jsDelivr
since Apr 2026
Unpkg
since Aug 2022
CRM
Salesforce
since Aug 2022
Databases
Firebase
since Apr 2025
Font scripts
Google Font API
since Aug 2022
IaaS
Google Cloud
since Apr 2025
JavaScript frameworks
JavaScript libraries
Slick
since Aug 2022
Miscellaneous
HTTP/3
since Apr 2025
Open Graph
since Apr 2025
Page builders
STUDIO
since Apr 2025
Programming languages
Security
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since Aug 2022
Web servers
Nginx
since Aug 2022
Webmail
Microsoft 365
since Nov 2023
Audience
- 86% desktop
- 14% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.18 / 10 · ranked #466,221 of all domains
60 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- Weight: 8.1 MB · 119 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.kuraka.co.jp | 18 |
| recruit.kuraka.co.jp | 14 |
| sanki.kuraka.co.jp | 13 |
Full technology history →
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Recent changes
- detected jsDelivr Apr 2026
- detected Java Oct 2025
- dropped Apple iCloud Mail Sep 2025
- dropped Cloudflare Bot Management Sep 2025
- dropped Vimeo Sep 2025