What powers heatsignal.app?
Last seen Aug 2026 · 18 technologies across 11 categories
Analytics
Google Analytics
since Jun 2026
Vercel Analytics
since Jun 2026
CDN
Cloudflare
since Jul 2026
Development
Turbopack
since Jun 2026
JavaScript frameworks
JavaScript graphics
Recharts
since Aug 2026
Miscellaneous
PaaS
Vercel
since Jun 2026
Performance
Priority Hints
since Jun 2026
Programming languages
Node.js
since Jun 2026
Security
Cloudflare Bot Management
since Jul 2026
HSTS
since Jun 2026
UI frameworks
Tailwind CSS
since Jun 2026
AI Crawlers
Blocks 13 of 33 AI crawlers we track by name in its robots.txt. Checked Aug 2026.
Training crawlers
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- cohere-training-data-crawler Blocked
- Diffbot Blocked
- FacebookBot Blocked
- Google-Extended Blocked
- GPTBot Blocked
- ImagesiftBot Blocked
- meta-externalagent Blocked
- Webzio-Extended Blocked
Search and AI assistants
- Amazonbot Blocked
The other 20 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
13 of 33 AI crawlers blocked
Audience
- 100% phone
United States
Bangladesh
India
Where the site's Chrome visitors come from, largest estimated audience first.
Core Web Vitals
| LCP | 3.2 s |
| INP | 325 ms |
| CLS | 0.1 |
| TTFB | 1100 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Vercel
- Weight: 8.1 MB · 62 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Full technology history →
Report an incorrect detection
Recent changes
- detected Recharts Aug 2026
- detected Cloudflare Jul 2026
- detected Cloudflare Bot Management Jul 2026