What powers coolcalc.com?
Last seen Jun 2026 · 40 technologies across 22 categories
Analytics
Google Analytics
since Jan 2019
CDN
Font scripts
Font Awesome
since Jan 2019
Google Font API
since Jan 2019
Issue trackers
JavaScript frameworks
JavaScript graphics
Chart.js
since Sep 2022
JavaScript libraries
Maps
Google Maps
since Jan 2019
Miscellaneous
Operating systems
PaaS
Amazon Web Services
since Mar 2026
Payment processors
Stripe
since Nov 2024
Photo galleries
PhotoSwipe
since Sep 2022
Programming languages
Reverse proxies
Envoy
since Jul 2022
Security
Tag managers
Google Tag Manager
since Jan 2019
UI frameworks
Web frameworks
Ruby on Rails
since Jul 2022
Web server extensions
Web servers
Webmail
Microsoft 365
since Aug 2022
Audience
- 88% desktop
- 12% phone
United States
Canada
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.36 / 10 · ranked #2,752,644 of all domains
20 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Amazon CloudFront
- Weight: 3.3 MB · 27 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| docs.coolcalc.com | 16 |
| app.coolcalc.com | 14 |
| www.coolcalc.com | 14 |
| support.coolcalc.com | 13 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Google Analytics Jun 2026
- detected Google Tag Manager Jun 2026
- dropped Google Analytics Mar 2026
- dropped Google Tag Manager Mar 2026
- dropped lit-element Mar 2026
- dropped lit-html Mar 2026
- dropped MailChimp Mar 2026
- dropped OWL Carousel Mar 2026
- dropped Swiper Mar 2026
- dropped YouTube Mar 2026
- detected Animate.css Feb 2026
- detected reCAPTCHA Feb 2026
- detected Slick Feb 2026
- detected Debian Oct 2025