Site Info - Theorie.nl

Craft CMS is a content management system based on PHP and MySQL.

PHP is a scripting language for creating websites.

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

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

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

The Internet Information Services (IIS) are a set of Internet-based services for Windows, developed by Microsoft.

Windows is an operating system produced by Microsoft.

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

TransIP is a Dutch web hosting provider owned by team.blue.

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

Signet is a Dutch web hosting provider owned by team.blue.

Mijndomein is a Dutch domain registrar and web hosting provider.

Mijndomein is a Dutch domain registrar and web hosting provider.

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

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

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.

Microsoft Clarity is a website visitor tracking tool.

Hotjar is a website analytics and feedback application.

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

Mouseflow is a live click tracking and website analytics service.

Clicky is a real-time web analytics tool by Roxr Software.

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.

The WhatsApp share button allows users to share content with their WhatsApp contacts.

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.

Session cookies are temporary cookies, which are deleted when the user closes the browser.

Persistent cookies with an expiration time between 1 day and 1 month.

HttpOnly cookies are used only in the HTTP protocol and not in client side scripts, which may increase security.

Secure cookies are used only via an encrypted connections, which may increase security.

Gzip (GNU zip) is a file compression algorithm.

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.

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.

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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