What powers calendar.best?
Last seen Jun 2026 · 15 technologies across 12 categories
Advertising
Google AdSense
since Apr 2021
Analytics
Google Analytics
since Oct 2020
CDN
Customer data platform
Sirdata
since Nov 2021
Font scripts
Google Font API
since Nov 2025
JavaScript libraries
Miscellaneous
Security
reCAPTCHA
since May 2022
Segmentation
Adobe Audience Manager
since Apr 2022
Tag managers
Google Tag Manager
since Oct 2020
UI frameworks
Web servers
Audience
- 80% desktop
- 19% phone
- 1% tablet
United States
India
United Kingdom
France
Italy
Indonesia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.51 / 10 · ranked #2,479,237 of all domains
23 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- Weight: 1.6 MB · 141 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
Report an incorrect detection
Recent changes
- detected Google Font API Jun 2026
- dropped Google Font API May 2026
- dropped core-js Mar 2026
- detected Preact Feb 2026
- detected Google Font API Nov 2025