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Gatsby is an open source static website generator based on React and GraphQL.

Static websites don't use any server-side programming language for generating web pages, but deliver fixed content which is created manually or with an offline tool.

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

PlusServer is a German web hosting provider. This includes the brands Serverloft, Internet24, Synergetic, Loomes, Intergenia and Nexinto.

T-Systems is a German IT services and consulting company owned by Deutsche Telekom.

PlusServer is a German web hosting provider. This includes the brands Serverloft, Internet24, Synergetic, Loomes, Intergenia and Nexinto.

Deutsche Telekom is a German telecommunications company.

Akamai is a content delivery network. This includes the former brands Instart Logic and StackPath.

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

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

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

Meta Pixel (formerly Facebook Pixel) is an analytics tool to track actions on websites.

Matomo (formerly Piwik) is an open source web analytics program.

The LinkedIn Insight Tag helps to optimize LinkedIn campaigns.

TikTok Pixel allows to track website events with TikTok.

The Google Advertising network consists of AdSense, DoubleClick and other services.

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.

A strong ETag is an HTTP header field for validation of cached web pages, that indicates a byte-for-byte identical page in the cache.

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.

QUIC (Quick UDP Internet Connections) is an experimental network protocol, originally designed by Google and submitted to IETF standardization.

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.

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

The Open Graph protocol, originally developed by Facebook, is an RDFa-based format that enables any web page to become a rich object in a social graph.

Twitter/X Cards enable automatic attachment of photos, videos and media elements to tweets.

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.

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

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