What powers heartflow.net?
Last seen Jun 2026 · 10 technologies across 9 categories
Authentication
Amazon SES
since Jun 2026
JavaScript frameworks
JavaScript libraries
Underscore.js
since Jun 2026
Miscellaneous
Babel
since Jun 2026
PaaS
Amazon Web Services
since Jun 2026
Programming languages
Java
since Jun 2026
Security
HSTS
since Jun 2026
Web servers
Nginx
since Jun 2026
Audience
- 100% desktop
United States
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.30 / 10 · ranked #48,344,172 of all domains
1 referring domains · OpenPageRank
Core Web Vitals
| LCP | 5.5 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 3200 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 0.5 MB · 10 requests
Homepage as crawled by the HTTP Archive, Jul 2026.