What powers zerofee.kr?
Last seen Sep 2026 · 17 technologies across 10 categories
Analytics
Google Analytics
since Sep 2026
CDN
JavaScript libraries
Day.js
since Sep 2026
Miscellaneous
HTTP/3
since Sep 2026
Open Graph
since Sep 2026
Page builders
Bubble
since Sep 2026
Programming languages
Node.js
since Sep 2026
Search engines
Security
HSTS
since Sep 2026
Video players
Web frameworks
Express
since Sep 2026
AI Crawlers
Not checked yet. Rescan the site (button above) and we fetch its robots.txt, llms.txt, and ai.txt to show which AI crawlers it blocks.
Audience
South Korea
Where the site's Chrome visitors come from, largest estimated audience first.
Core Web Vitals
| LCP | 3.5 s |
| CLS | 0.05 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Korean
- CDN: Cloudflare
- Weight: 22.2 MB · 62 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- 제로피
- Industry: Software and apps (declares
WebApplication)
From the homepage's own structured data (Sep 2026).