What powers 4fx.ai?
Last seen Aug 2026 · 14 technologies across 7 categories
CDN
cdnjs
since May 2026
Cloudflare
since May 2026
Font scripts
Google Font API
since May 2026
JavaScript frameworks
Miscellaneous
Open Graph
since May 2026
PWA
since May 2026
Programming languages
UI frameworks
Web servers
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Aug 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 100% desktop
Vietnam
Where the site's Chrome visitors come from, largest estimated audience first.
Core Web Vitals
| LCP | 7.7 s |
| INP | 125 ms |
| CLS | 0.5 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 0.7 MB · 61 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Subdomains
| Host | Techs |
|---|---|
| 4fx.ai | 11 |
| quant.4fx.ai | 4 |