What powers s4s.is?
Last seen Jun 2026 · 26 technologies across 16 categories
Analytics
CDN
Font scripts
Google Font API
since Mar 2020
JavaScript frameworks
JavaScript libraries
Live chat
Facebook Chat Plugin
since Mar 2022
Miscellaneous
Open Graph
since Sep 2022
Webpack
since Nov 2021
Operating systems
Windows Server
since Mar 2020
Retargeting
Google Remarketing Tag
since Jul 2021
Security
Cloudflare Bot Management
since May 2026
Tag managers
Google Tag Manager
since Mar 2020
UI frameworks
Web frameworks
Microsoft ASP.NET
since Mar 2020
Web servers
Webmail
Microsoft 365
since Aug 2022
Widgets
Facebook
since Mar 2020
Audience
- 76% phone
- 20% desktop
- 3% tablet
Iceland
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.70 / 10 · ranked #2,158,248 of all domains
12 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.5 s |
| INP | 150 ms |
| CLS | 0.6 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Icelandic
- Weight: 2.5 MB · 90 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| s4s.is | 19 |
| www.s4s.is | 19 |
| air.s4s.is | 12 |
| ellingsen.s4s.is | 12 |
| skor.s4s.is | 12 |
| backend.s4s.is | 5 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Dojo Jun 2026
- dropped MailChimp Jun 2026
- dropped Akamai May 2026
- dropped Akamai Bot Manager May 2026
- detected Cloudflare Bot Management May 2026
- detected Google Font API May 2026
- detected Microsoft Clarity Nov 2025
- detected Umami Nov 2025