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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.

Cloudflare Server is a web server developed by Cloudflare.

Link11 is a German provider of DDOS protection and content delivery network services.

Cloudflare provides a content delivery network.

Amazon is a US-based e-commerce and cloud computing provider.

Constellix provides DNS management services owned by DigiCert.

Cloudflare provides DNS servers and other web services.

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

Contabo is a German provider of internet services.

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

GlobalSign is an IT security service provider, also operating as SSL certificate authority.

unpkg is a JavaScript content delivery network for libraries that use the npm package manager.

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

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

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.

Gzip (GNU zip) is a file compression algorithm.

Brotli is a lossless compression algorithm developed by Google.

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.

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

HTTP/3 is the third major version of the HTTP network protocol, derived from the QUIC protocol.

HTTP Strict Transport Security (HSTS) defines a mechanism enabling web sites to declare themselves accessible only via secure connections.

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

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.

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

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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