What powers ref.tools?
Last seen Jun 2026 · 15 technologies across 12 categories
Analytics
Google Analytics
since Sep 2025
Simple Analytics
since May 2025
CDN
Cloudflare
since May 2025
Databases
Firebase
since May 2025
Amazon SES
since Sep 2025
Font scripts
Google Font API
since May 2025
Issue trackers
Sentry
since Aug 2025
JavaScript frameworks
React
since May 2025
Miscellaneous
HTTP/3
since May 2025
Open Graph
since May 2025
PaaS
Amazon Web Services
since Sep 2025
Security
HSTS
since May 2025
Surveys
Tally
since May 2025
Webmail
Google Workspace
since Sep 2025
Audience
- 83% desktop
- 18% phone
United States
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.72 / 10 · ranked #2,128,363 of all domains
16 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Fastly
- Weight: 1.7 MB · 69 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
Report an incorrect detection
Recent changes
- dropped lite-youtube-embed Jun 2026
- dropped YouTube Jun 2026
- detected Amazon SES Sep 2025
- detected Amazon Web Services Sep 2025
- detected Google Analytics Sep 2025
- detected Google Workspace Sep 2025
- detected Sentry Aug 2025