Website gioxx.org

Website using the € symbol on their website - meaning it may accept payment in Euros.

PayPal is a American international e-commerce service that enables companies and individuals to send money and to accept payments without revealing any financial details.

Buy Me a Coffee is a modern creator platform.

A family of standard web feed formats used to publish frequently updated information like blog entries, news headlines, audio and video.

Really Simple Discovery is a way to help client software find the services needed to read, edit, or "work with" weblogging software.

A pingback is one of four types of linkback methods for Web authors to request notification when somebody links to one of their documents. This enables authors to keep track of who is linking to, or referring to their articles.

Open graph locale entity tag

Open graph type entity tag

Open graph url entity tag

Open graph description entity tag

The Open Graph protocol enables any web page to become a rich object in a social graph, a open protocol supported by Facebook

Open graph image entity tag

Open graph title entity tag

Open graph site name entity tag

This page contains a meta robots tag which tells search engines and robots to index or not index the page.

Chrome for Android, since version 39 supports the "theme-color" meta tag to allow websites control the background color of the tab's UI header.

Meta descriptions are HTML attributes that provide concise explanations of the contents of web pages. Meta descriptions are commonly used on search engine result pages (SERPs) to display preview snippets for a given page.

Sites who has this tag are verfied by google to use WebMaster tools

A canonical link element is an HTML element that helps webmasters prevent duplicate content issues by specifying the "canonical", or "preferred".

By adding rel="home" to a hyperlink, a page indicates that the destination of that hyperlink is the homepage of the site in which the current page appears.

Google's hosted library for web fonts. Allows websites to choose and use fonts from a free, wide variety of fonts.

Sites using Html 5 SVG Tag

A web page. Every web page is implicitly assumed to be declared to be of type WebPage, so the various properties about that webpage, such as breadcrumb may be used. We recommend explicit declaration if these properties are specified, but if they are found outside of an itemscope, they will be assumed to be about the page

A scheme.org entity that represents the most generic kind of creative work, including books, movies, photographs, software programs, etc.

A scheme.org entity that represents a person (alive, dead, undead, or fictional).

A scheme.org entity that represents a blog.

UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.