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

MathJax is a JavaScript engine for displaying mathematical formulas.

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

Nhan Hoa is a Vietnamese domain registrar and web hosting provider.

Nhan Hoa is a Vietnamese domain registrar and web hosting provider.

Nhan Hoa is a Vietnamese provider of internet services. This includes its ZONEDNS brand.

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

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.

Full Circle Studies collects information about general website visitation patterns as part of the ComScore market research.

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

Microsoft Advertising is an advertising platform by Microsoft. This includes the former brands Xandr, AppNexus, Aquantive and others.

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

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

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.

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

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

Non-secure cookies may be used via an unencrypted connections, which may be a security threat.

Gzip (GNU zip) is a file compression algorithm.

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

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

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

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.

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