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Contao (formerly called TYPOlight) is an open source content management system based on PHP and MySQL.

PHP is a scripting language for creating websites.

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

jQuery is a JavaScript library that simplifies HTML document traversing, event handling, animating and Ajax interaction. Originally developed by John Resig.

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.

IONOS (formerly 1&1 IONOS and 1&1 Internet) is a European web hosting company owned by United Internet.

IONOS (formerly 1&1 IONOS and 1&1 Internet) is a European web hosting company owned by United Internet.

IONOS (formerly 1&1 IONOS and 1&1 Internet) is a European internet services company owned by United Internet.

Microsoft is a multinational technology company headquartered in USA, also offering email services.

IONOS (formerly 1&1 IONOS and 1&1 Internet) is a European internet services company owned by United Internet.

Sectigo (formerly Comodo CA) is a US-based SSL certificate authority.

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

Embedded Cascading Style Sheets define a set of style rules in a <style> element within a web page.

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

Gzip (GNU zip) is a file compression algorithm.

The Internet Protocol version 6 (IPv6) provides amongst others a vastly larger address space than the preceding version 4. We consider a website to support IPv6 if a 128-bit address is assigned to it, regardless of the content delivered at that address.

The websites redirects visitors to its www subdomain, e.g. from example.com to www.example.com.

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

JSON-LD (JavaScript Object Notation for Linked Data) is a method of encoding Linked Data using JSON.

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.

Scalable Vector Graphics (SVG) is an XML-based vector image format.

WebP is an image format that provides lossless and lossy compression, developed by Google.

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