What powers 3b1b.co?
Last seen Jun 2026 · 14 technologies across 9 categories
CDN
Cloudflare
since Jun 2024
jsDelivr
since Apr 2025
Mailgun
since May 2024
JavaScript frameworks
Svelte
since Jun 2023
JavaScript libraries
lite-youtube-embed
since Apr 2025
Miscellaneous
Programming languages
Node.js
since Jun 2023
Security
Cloudflare Bot Management
since Jun 2024
UI frameworks
SvelteKit
since Jun 2023
Tailwind CSS
since Jun 2023
Video players
YouTube
since Jun 2023
Audience
- 57% desktop
- 43% phone
India
United States
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.11 / 10 · ranked #1,403,663 of all domains
23 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 0.3 MB · 39 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.