What powers contactbook.app?
Last seen Jun 2026 · 46 technologies across 24 categories
A/B Testing
Google Optimize
since Nov 2021
Advertising
Microsoft Advertising
since Jan 2023
Analytics
Amplitude
since Jul 2023
Google Ads Conversion Tracking
since Jul 2021
Google Analytics
since Mar 2021
Hotjar
since Mar 2021
Linkedin Insight Tag
since Oct 2021
Matomo Analytics
since Jun 2021
Microsoft Clarity
since Jul 2021
Quora Pixel
since Sep 2023
Appointment scheduling
Calendly
since Jan 2022
Authentication
Apple Sign-in
since Oct 2022
Caching
Varnish
since Oct 2021
CDN
Databases
Firebase
since Oct 2022
Google Workspace
since Aug 2022
Font scripts
Google Font API
since Oct 2021
Issue trackers
Sentry
since Oct 2022
JavaScript frameworks
React
since Mar 2021
JavaScript libraries
Live chat
HubSpot Chat
since Jun 2021
Tawk.to
since Apr 2022
Marketing automation
Miscellaneous
PaaS
Amazon Web Services
since Sep 2022
Page builders
Webflow
since Oct 2021
Security
Cloudflare Bot Management
since Nov 2021
HSTS
since Oct 2022
Tag managers
Google Tag Manager
since Mar 2021
UI frameworks
Ant Design
since Oct 2022
Video players
YouTube
since Feb 2022
Web servers
Widgets
Audience
- 54% desktop
- 46% phone
India
United States
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.21 / 10 · ranked #1,246,106 of all domains
20 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- CDN: Cloudflare
- Weight: 3.7 MB · 137 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.contactbook.app | 25 |
| web.contactbook.app | 24 |
| contactbook.app | 23 |