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GitBook is a hosted documentation system, publishing documentation as web pages.

Better Uptime Status Page is a hosted service for showing the status of services by Better Stack.

Ruby is a general-purpose object-oriented language originally developed by Yukihiro "Matz" Matsumoto in Japan.

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.

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

Bootstrap is an open source HTML, CSS, and JavaScript framework.

Moment.js is a library to manipulate dates in JavaScript.

Next.js is an open source JavaScript framework based on React and Node.js.

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

Cloudflare Server is a web server developed by Cloudflare.

Caddy is an open-source web server implemented in Go.

Node.js is a server-side JavaScript environment for writing network programs such as web servers, originally developed by Ryan Dahl.

Contabo is a German web hosting provider.

Hetzner is a German web hosting provider.

Vercel (formerly Zeit) offers hosting for web applications and static websites.

GitBook is a hosted documentation system.

Better Stack offers hosted services for monitoring the status of services.

Contabo is a German web hosting provider.

Hetzner is a German web hosting provider.

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

Cloudflare provides a content delivery network.

Cloudflare provides DNS servers and other web services.

Alibaba is a Chinese e-commerce and cloud computing provider.

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

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

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

Google Analytics is a free service to get detailed statistics about the visitors of a website, provided by Google. This includes the Ads conversion tracking and the Floodlight services.

Microsoft Clarity is a website visitor tracking tool.

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

The Google Tag Manager is a Google service to support webmasters to manage tags on their websites.

Zstandard is a lossless data compression algorithm developed by Yann Collet at Facebook.

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.

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 use SSL encryption, e.g. from http://example.com/ to https://example.com/.

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

Cloud computing