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WordPress is an open source blog publishing and content management system, based on PHP and MySQL.

Drupal is an open source content management system written in PHP, originally developed by Dries Buytaert.

PHP is a scripting language for creating websites.

Microsoft's Active Server Pages technology on the .NET framework.

ColdFusion is a scripting language used for building web applications, developed by Adobe Systems.

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.

GSAP (GreenSock Animation Platform) is a JavaScript library for HTML5 animations.

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

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

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

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

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

Cloudflare Server is a web server developed by Cloudflare.

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

Debian is a Linux distribution.

Pantheon provides CMS hosting.

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

Google provides various services to run on its servers.

WP Engine provides managed WordPress hosting.

Salesforce is a US-based provider of cloud-based software. This includes the former Demandware brand.

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

Google provides various services to run on its servers.

Salesforce is a US-based provider of cloud-based software. This includes the former Demandware brand.

Fastly is a content delivery network.

Cloudflare provides a content delivery network.

Cloudflare provides DNS servers and other web services.

Proofpoint provides email protection and other IT security services.

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.

Starfield Technologies is an SSL certificate authority owned by Go Daddy.

DigiCert is an SSL certificate authority. This includes Verizon, whose Enterprise SSL Business has been acquired by DigiCert.

The SSL certificate is invalid because it is not issued for the domain where it is used.

The CDNJS is a content distribution network, hosting a large number of JavaScript libraries, provided by CloudFlare.

jsDelivr is a service for hosting JavaScript files.

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.

Hotjar is a website analytics and feedback application.

New Relic is a web application performance management tool.

MonsterInsights is a WordPress plugin for collecting Google Analytics and WordPress-specific analytics data.

The LinkedIn Insight Tag helps to optimize LinkedIn campaigns.

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

Microsoft Clarity is a website visitor tracking tool.

Microsoft UET (Universal Event Tracking) records what visitors do on a website after they click on an ad.

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.

AddToAny is a social bookmarking and sharing service.

Facebook Social Plugins provide a way for Facebook users to share web pages with their friends.

A Twitter/X Button allows a Twitter user to post a tweet from the visited site.

LinkedIn Share Buttons enable visitors to to share website content with their LinkedIn network.

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.

Deflate is a data compression algorithm.

A weak ETag is an HTTP header field for validation of cached web pages, that indicates a semantically equivalent 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.

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 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.

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

Generic RDFa (Resource Description Framework in attributes) is RDFa without further specialization.

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.

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.

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.

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

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