What powers useschool.co.kr?
Last seen Jun 2026 · 45 technologies across 19 categories
A/B Testing
Google Optimize
since Oct 2021
Analytics
CDN
cdnjs
since May 2022
Cloudflare
since May 2022
Google Hosted Libraries
since Feb 2022
jQuery CDN
since Feb 2022
jsDelivr
since May 2021
Editors
DreamWeaver
since May 2019
Font scripts
Google Font API
since May 2019
JavaScript frameworks
JavaScript libraries
Live chat
Channel.io
since Jan 2026
Miscellaneous
Babel
since Aug 2025
Kakao
since Feb 2022
Open Graph
since Sep 2022
Popper
since Apr 2022
PWA
since Aug 2022
Swiper Slider
since Mar 2021
Webpack
since Aug 2025
Operating systems
Windows Server
since May 2019
Programming languages
PHP
since Oct 2023
Retargeting
Google Remarketing Tag
since Jul 2021
Security
HSTS
since Dec 2022
Tag managers
Google Tag Manager
since May 2019
UI frameworks
Video players
YouTube
since Aug 2019
Web frameworks
Microsoft ASP.NET
since May 2019
Web servers
Widgets
Facebook
since May 2019
Audience
- 92% desktop
- 8% phone
South Korea
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.80 / 10 · ranked #16,567,838 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 1.3 MB · 17 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.useschool.co.kr | 29 |
| m.useschool.co.kr | 27 |
| useschool.co.kr | 23 |
| kinder.useschool.co.kr | 20 |
| learning.useschool.co.kr | 13 |
| event.useschool.co.kr | 8 |
| avatar.useschool.co.kr | 7 |
| bizstudy.useschool.co.kr | 6 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Unpkg Feb 2026
- detected Channel.io Jan 2026
- detected React Jan 2026
- detected styled-components Jan 2026