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I saw that many web developers include in tag
<meta itemprop="name" content=" ">
<meta itemprop="description" content=" ">
<meta itemprop="image" content=" ">
I don't understand what is the purpose of this meta tags
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The itemprop global attribute is used to add properties to an item. Every HTML element can have an itemprop attribute specified, and an itemprop consists of a name-value pair. Each name-value pair is called a property, and a group of one or more properties forms an item.
Microdata is part of the WHATWG HTML Standard and is used to nest metadata within existing content on web pages. Search engines and web crawlers can extract and process microdata from a web page and use it to provide a richer browsing experience for users.
The global attribute itemtype specifies the URL of the vocabulary that will be used to define itemprop 's (item properties) in the data structure. itemscope is used to set the scope of where in the data structure the vocabulary set by itemtype will be active.
itemscope is a boolean global attribute that defines the scope of associated metadata. Specifying the itemscope attribute for an element creates a new item, which results in a number of name-value pairs that are associated with the element.
It may be for schema.org micro-formatting which is meant to increase SEO.
"Schema.org provides a collection of shared vocabularies webmasters can use to mark up their pages in ways that can be understood by the major search engines: Google, Microsoft, Yandex and Yahoo!"
You can read the documentation here : https://schema.org/docs/gs.html
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