What powers leidenuniv.nl?
Last seen Jun 2026 · 129 technologies across 38 categories
Advertising
Microsoft Advertising
since May 2025
Analytics
Google Analytics
since Jun 2018
Hotjar
since Feb 2023
Matomo Analytics
since Mar 2023
Microsoft Clarity
since Oct 2025
Plausible
since Nov 2023
Authentication
SimpleSAMLphp
since Dec 2022
Caching
Varnish
since Apr 2024
CDN
Amazon S3
since May 2022
cdnjs
since Dec 2021
Cloudflare
since May 2022
Fastly
since Apr 2024
Google Hosted Libraries
since Feb 2022
jQuery CDN
since Mar 2022
jsDelivr
since Nov 2021
Unpkg
since Jul 2021
CMS
Comment systems
Databases
MySQL
since Apr 2019
Ecommerce
Cart Functionality
since Aug 2020
Font scripts
Font Awesome
since Apr 2019
Google Font API
since Apr 2019
Hosting panels
Plesk
since May 2021
JavaScript Frameworks
JavaScript graphics
Chart.js
since Jun 2019
particles.js
since Feb 2023
JavaScript libraries
Choices
since Feb 2021
Clipboard.js
since Aug 2022
crypto-js
since Mar 2023
Day.js
since Oct 2021
Isotope
since Aug 2021
List.js
since Mar 2026
script.aculo.us
since Apr 2019
Select2
since May 2020
Slick
since May 2020
Swiper
since Sep 2022
Live chat
WhatsApp Business Chat
since Aug 2022
Load balancers
Azure Front Door
since Apr 2023
Maps
Miscellaneous
Babel
since Aug 2022
Open Graph
since Sep 2022
Oracle Dynamic Monitoring Service
since Jan 2023
Popper
since Apr 2022
Prism
since Mar 2026
PWA
since Feb 2023
RSS
since Dec 2022
Swiper Slider
since Nov 2021
Webpack
since Aug 2022
Mobile frameworks
Operating Systems
CentOS
since Aug 2018
Red Hat
since Aug 2018
SUSE
since Apr 2018
Ubuntu
since Aug 2018
Windows Server
since Aug 2018
PaaS
Page builders
WordPress Site Editor
since Sep 2025
Performance
Priority Hints
since Dec 2023
Programming Languages
Retargeting
Google Remarketing Tag
since Jul 2021
Rich text editors
Security
Cloudflare Bot Management
since Apr 2023
HSTS
since Sep 2022
Static site generator
Tag managers
Google Tag Manager
since Apr 2018
UI frameworks
Video players
Web frameworks
Web server extensions
Web Servers
Apache HTTP Server
since Apr 2018
Express
since Aug 2018
EZproxy
since Mar 2023
Nginx
since Feb 2021
Oracle WebLogic Server
since Mar 2023
Webmail
Microsoft 365
since Aug 2022
Widgets
WordPress plugins
Elementor Header & Footer Builder
since Feb 2023
Essential Addons for Elementor
since Feb 2023
WordPress themes
Twenty Eleven
since Jan 2023
Twenty Seventeen
since Aug 2022
Twenty Twenty
since Sep 2023
Twenty Twenty-Five
since Sep 2025
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 83% desktop
- 17% phone
Netherlands
Greece
India
Germany
United Kingdom
France
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
8.22 / 10 · ranked #5,076 of all domains
2,970 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| INP | 125 ms |
| CLS | 0.05 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- Weight: 2.5 MB · 57 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| helpdesk.strw.leidenuniv.nl | 23 |
| emo2023.liacs.leidenuniv.nl | 20 |
| weblectures.leidenuniv.nl | 19 |
| indico.strw.leidenuniv.nl | 18 |
| lyot2022.strw.leidenuniv.nl | 18 |
| hortus.leidenuniv.nl | 15 |
| webprint.leidenuniv.nl | 14 |
| catalogue.leidenuniv.nl | 13 |
| readeronline.leidenuniv.nl | 13 |
| video.leidenuniv.nl | 13 |
| advance-lexis-com.ezproxy.leidenuniv.nl | 11 |
| invisiblecollege.weblog.leidenuniv.nl | 11 |
| clin34.leidenuniv.nl | 10 |
| disc.leidenuniv.nl | 10 |
| ezproxy.leidenuniv.nl | 10 |
| leaps.strw.leidenuniv.nl | 10 |
| scharrelaar-p3.leidenuniv.nl | 10 |
| socrates.leidenuniv.nl | 10 |
| www-cambridge-org.ezproxy.leidenuniv.nl | 10 |
| zrs.leidenuniv.nl | 10 |
| evasys.leidenuniv.nl | 9 |
| gardenexplorer.leidenuniv.nl | 9 |
| globtaxgov.weblog.leidenuniv.nl | 9 |
| home.strw.leidenuniv.nl | 9 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Angular Material Apr 2026
- dropped PDF.js Apr 2026
- dropped VideoJS Apr 2026
- detected Leaflet Mar 2026
- detected Livefyre Mar 2026
- detected Microsoft Clarity Oct 2025