What powers refractiveindex.info?
Last seen Jun 2026 · 16 technologies across 13 categories
Advertising
Google AdSense
since Apr 2018
Analytics
Google Analytics
since Jun 2018
Statcounter
since Jun 2018
CDN
cdnjs
since Jun 2023
Cloudflare
since Jun 2023
Cookie compliance
Funding Choices
since Aug 2023
Font scripts
Google Font API
since Apr 2018
Hosting
GoDaddy
since Aug 2022
JavaScript graphics
JavaScript libraries
Programming languages
Security
reCAPTCHA
since Apr 2022
Tag managers
Google Tag Manager
since Jan 2020
Web servers
Apache HTTP Server
since Apr 2018
Webmail
Google Workspace
since Aug 2022
Audience
- 89% desktop
- 11% phone
United States
India
Japan
Germany
United Kingdom
France
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.75 / 10 · ranked #275,880 of all domains
135 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- Weight: 1.8 MB · 98 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| refractiveindex.info | 16 |
| www.refractiveindex.info | 8 |