What powers 4n20.be?

Analytics

Facebook Pixel v2.9.334

since Aug 2022

Google Analytics

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Snowplow Analytics

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CMS

Duda

since Aug 2022

JavaScript libraries

core-js v3.32.2

since Aug 2022

jQuery v3.7.0

since Aug 2022

jQuery Migrate v3.5.2

since Jun 2023

Lodash v4.17.21

since Sep 2025

MobX

since Jan 2023

Marketing automation

MailChimp

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Miscellaneous

Open Graph

since Dec 2022

RSS

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Performance

Priority Hints

since Aug 2022

Photo galleries

PhotoSwipe

since Sep 2025

Security

HSTS

since Dec 2022

Web servers

Nginx

since Aug 2022