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Kirby is a file‑based content management system written in PHP.

PHP is a scripting language for creating websites.

JavaScript is a lightweight, object-oriented, cross-platform scripting language, often used within web pages.

Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the visitors browser.

The Apache HTTP Server is an open source web server by the Apache Software Foundation.

Nginx (pronounced as "engine X") is a lightweight open source web server developed by Igor Sysoev.

Plesk is a commercial web panel running on Windows and Linux.

Linux is a Unix-like open source operating system originally developed by Linus Torvalds.

Hetzner is a German web hosting provider.

Hetzner is a German web hosting provider.

Let’s Encrypt is a free, automated, and open certificate authority provided by the Internet Security Research Group.

External Cascading Style Sheets define style rules in a separate CSS file.

Inline Cascading Style Sheets define style rules directly within an (X)HTML element using the style attribute.

Session cookies are temporary cookies, which are deleted when the user closes the browser.

HttpOnly cookies are used only in the HTTP protocol and not in client side scripts, which may increase security.

Secure cookies are used only via an encrypted connections, which may increase security.

The websites redirects visitors to use SSL encryption, e.g. from http://example.com/ to https://example.com/.

Gzip (GNU zip) is a file compression algorithm.

HTTP/2 is the second major version of the HTTP network protocol.

Microdata is a specification to integrate metadata within existing content on web pages.

HTML5 is the fifth revision of the HTML standard.

UTF-8 (8-bit Unicode Transformation Format) is a variable-length character encoding for Unicode, which is backwards compatible with ASCII.

PNG (Portable Network Graphics) is a lossless compression image format, suitable to store graphics with uniformly colored areas, and originally introduced as a free, open-source successor of GIF.

JPEG (Joint Photographic Experts Group) is a lossy compression method suitable to store photographic images.

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