Meta tags that Yandex takes into account

Meta tags allow you to specify metadata about a site page. A number of meta tags are also used by search engine robots. The Yandex robot looks at the content of the following meta tags:

Meta tag Description Example
Description Can be used in descriptions of site pages in the search results. Learn more <meta name="Description" content="..."/>
Keywords Can be used when determining the page's relevance to search queries. <meta name="Keywords" content="..."/>
robots Defines the rules for loading and indexing site pages. Learn more <meta name="robots" content="..."/>
viewport
Used to adapt the site for viewing on mobile devices. It allows controlling the zoom of the viewport in the browser.
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The value width=device-width adapts the width of the viewport to the device screen. The value initial-scale=1 provides a 1:1 ratio of CSS pixels to independent device pixels.

If the meta tag is omitted, mobile browsers show the page for a computer screen by default. Since the screen width on a mobile device is significantly less than a computer screen, browsers try to optimize the content by increasing the font size, scaling the content to the screen size, or showing only the part of the content that fits on the screen.

<meta name="viewport" content="width=device-width, initial-scale=1">
Content-Type Taken into account when determining the type of document and its encoding. <meta http-equiv="Content-Type" content="type; charset=..."/>
refresh

Redirects the user to the page with the specified URL after the user stays N seconds on the current page. For small N values, it is considered a temporary redirect, similar to server redirects with the HTTP code 302/303/307.

You can use this meta tag when moving your site.

<meta http-equiv="refresh" content="N;url=_redirect target URL_">

If pages don't appear in the search results for a long time or were excluded from them, provide examples of such pages in the form.