What powers calibre.org.uk?
Last seen May 2026 · 41 technologies across 23 categories
Analytics
Authentication
Clerk
since Jun 2025
CDN
Amazon S3
since Nov 2025
Cloudflare
since Jun 2025
Cookie compliance
CookieYes
since Oct 2023
Customer data platform
Segment
since Jul 2025
Mailjet
since Feb 2024
Font scripts
Font Awesome
since Jun 2025
Google Font API
since Jun 2025
Hosting
GoDaddy
since Oct 2023
Issue trackers
Sentry
since Jul 2025
JavaScript frameworks
JavaScript libraries
Live chat
LiveChat
since Jun 2025
Miscellaneous
HTTP/3
since Jun 2025
Open Graph
since Oct 2023
Prism
since Jun 2025
PWA
since Jun 2025
Webpack
since Oct 2023
Operating systems
Windows Server
since Jan 2019
PaaS
Amazon Web Services
since Nov 2025
Vercel
since Oct 2023
Payment processors
Stripe
since Oct 2023
Performance
Priority Hints
since Oct 2023
Programming languages
Node.js
since Oct 2023
Security
Cloudflare Bot Management
since Jun 2025
HSTS
since Oct 2023
Tag managers
Google Tag Manager
since Jan 2019
UI frameworks
Headless UI
since Oct 2023
Tailwind CSS
since Oct 2023
Web frameworks
Web servers
Audience
- 59% phone
- 26% desktop
- 15% tablet
United Kingdom
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.13 / 10 · ranked #1,375,216 of all domains
43 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.7 s |
| INP | 275 ms |
| CLS | 0.15 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Subdomains
| Host | Techs |
|---|---|
| my.calibre.org.uk | 27 |
| accounts.calibre.org.uk | 17 |
| help.calibre.org.uk | 13 |
| www.calibre.org.uk | 6 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Amazon S3 Nov 2025
- detected Amazon Web Services Nov 2025
- detected core-js Nov 2025
- detected Facebook Pixel Nov 2025
- detected TikTok Pixel Nov 2025
- dropped core-js Sep 2025