What powers opencourse.kr?
Last seen Jun 2026 · 25 technologies across 15 categories
Advertising
Google AdSense
since Mar 2023
Analytics
Cloudflare Browser Insights
since Apr 2023
Google Analytics
since Mar 2023
Naver Analytics
since Mar 2023
Tinybird
since Aug 2025
CDN
Cloudflare
since Mar 2023
jsDelivr
since Mar 2023
CMS
Cookie compliance
Funding Choices
since Mar 2023
Mailgun
since Mar 2023
JavaScript frameworks
React
since Mar 2023
Miscellaneous
Performance
Cloudflare Zaraz
since Nov 2023
Priority Hints
since Dec 2023
Programming languages
Node.js
since Mar 2023
Security
Tag managers
Google Tag Manager
since Aug 2023
UI frameworks
Web frameworks
Express
since Mar 2023
Widgets
Ko-fi
since Apr 2026
Audience
- 73% desktop
- 27% phone
South Korea
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.46 / 10 · ranked #27,324,875 of all domains
1 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.9 s |
| INP | 25 ms |
| CLS | 0.15 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Korean
- CDN: Cloudflare
- Weight: 1.8 MB · 80 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.opencourse.kr | 25 |
| opencourse.kr | 18 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Google Font API May 2026
- detected Priority Hints May 2026
- detected Radix UI May 2026
- detected shadcn/ui May 2026
- detected Tailwind CSS May 2026
- dropped Cloudflare Rocket Loader Sep 2025
- detected Express Aug 2025
- detected Google Font API Aug 2025
- detected Tinybird Aug 2025