What powers 13f.info?
Last seen Jun 2026 · 11 technologies across 9 categories
Analytics
Cloudflare Browser Insights
since Nov 2025
CDN
Cloudflare
since Oct 2021
JavaScript graphics
Chart.js
since Dec 2023
JavaScript libraries
Miscellaneous
HTTP/3
since Sep 2022
Open Graph
since Sep 2022
Programming languages
Ruby
since Oct 2021
Security
HSTS
since Sep 2022
UI frameworks
Tailwind CSS
since Apr 2022
Web frameworks
Ruby on Rails
since Oct 2021
Audience
- 81% desktop
- 19% phone
South Korea
Hong Kong SAR China
United States
India
Japan
Germany
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.93 / 10 · ranked #626,027 of all domains
99 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- CDN: Cloudflare
- Weight: 0.2 MB · 11 requests
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- detected Cloudflare Browser Insights Nov 2025
- dropped Heroku Oct 2025