Site Info - Versio.nl

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

Roundcube is an open source webmail client written in PHP.

Status.io provides hosted system status pages.

PHP is a scripting language for creating websites.

JavaScript is a lightweight, object-oriented, cross-platform scripting language. This includes TypeScript.

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.

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

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

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.

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

Cloudflare Server is a web server developed by Cloudflare.

Envoy Proxy is a proxy server designed for large service-oriented architectures.

Unix is a range of operating systems originally developed at Bell Labs. This includes Unix and Unix-like systems, such as Linux.

Previder is a Dutch web hosting provider owned by Odin Group.

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

Yourhosting is a Dutch web hosting provider owned by Your.Online. This includes the former brands Vevida, VIP Internet, Reviced, Realhosting, Alphamega and others.

Status.io provides hosted system status pages.

Freshworks provides a range of hosted customer service platforms.

Previder is a Dutch web hosting provider owned by Odin Group.

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

Yourhosting is a Dutch web hosting provider owned by Your.Online. This includes the former brands Vevida, VIP Internet, Reviced, Realhosting, Alphamega and others.

Amazon CloudFront is a content delivery web service by Amazon.

Cloudflare provides a content delivery network.

Yourhosting is a Dutch provider of internet services owned by Your.Online. This includes the former brands Vevida, VIP Internet, Reviced, Realhosting, Alphamega and others.

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

Spam Experts is an email service provider owned by N-able.

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

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

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

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.

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

HubSpot Marketing Analytics is a web analytics tool by HubSpot.

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.

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.

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.

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 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/.

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

Persistent cookies with an expiration time of up to 1 day.

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.

Brotli is a lossless compression algorithm developed by Google.

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

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.

AMP (Accelerated Mobile Pages) is a HTML format optimized for mobile web browsing.

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.

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

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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