What powers sslleiden.nl?
Last seen Jun 2026 · 16 technologies across 11 categories
Analytics
Google Analytics
since Aug 2018
CMS
Font scripts
Google Font API
since Aug 2018
Issue trackers
Sentry
since Dec 2020
JavaScript frameworks
JavaScript libraries
Miscellaneous
Programming languages
PHP
since Aug 2018
Security
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since Feb 2019
Web servers
Apache HTTP Server
since Aug 2018
Audience
- 59% phone
- 41% desktop
Netherlands
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.18 / 10 · ranked #1,298,244 of all domains
21 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Dutch
- Weight: 0.6 MB · 20 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| docenten.sslleiden.nl | 8 |
| www.sslleiden.nl | 8 |
| sslleiden.nl | 7 |
| leerlingen.sslleiden.nl | 6 |
| indeling.sslleiden.nl | 4 |
Full technology history →
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Recent changes
- dropped core-js Jan 2026