To ensure the successful integration of the content recommendation widget and its optimal operation, it is necessary for publishers to include certain meta tags and/or schema.org ld+json data in their article pages. These data allow us to display relevant articles to readers, aligning with the specific needs of media owners.

Below, we list the technical requirements necessary for content recommendations.

Minimum required meta tags

Article title: The article title must be provided. At least one of the following tags is required.

<meta property="og:title" content="">
<title></title>

Article description: A short description or summary of the article. At least one of the following meta tags is required.

<meta property="og:description" content="">
<meta name="description" content="">

Canonical URL: The unique, definitive URL of the article, also serving as the article’s identifier. One of the following two tags is required. It is important that the article's unique URL is provided without any special parameters.

<meta property="og:url" content="">
<link rel="canonical" href="">

Article image: The URL pointing to the main image of the article, in absolute link format. At least one of the following meta tags is required.

<meta property="og:image" content="">
<meta property="og:image:url" content="">
<meta property="og:image:secure_url" content=""> 

Article publication date: The publication date of the article, one of the most important parameters for successful recommendations.

 <meta property="article:published_time" content="">

The publication date can be provided in schema.org data structure in ld+json format using the datePublished parameter or via Microdata. 
If neither solution is available, an RSS feed can alternatively be used to manage publication dates.

Recommended additional meta tags

For specific recommendation conditions and customized settings, additional information may be needed. On the media owner’s admin interface, several automated operations are available, requiring the following data.

Article category: Assigning the article to a specific section or category.

 <meta property="article:section" content="">

This can also be provided in ld+json format via the articleSection parameter.

Article author: Specifying the author of the article.

<meta property="article:author" content="">

Or in ld+json format using the author parameter.

Adult content designation: To indicate if the content is suitable only for adults, use one of the following meta tags.

<meta name="age_hu" content="18">
<meta name="rating" content="adult">
<meta name="rating" content="RTA-5042-1996-1400-1577-RTA">

Paid, paywall-protected articles: If the content is only accessible via subscription, this can be indicated with the following meta tag:

<meta name="paywall" content="true">

Additionally, or in ld+json format, the isAccessibleForFree parameter can be set to false.

Disabling content recommendations on specific pages

If you do not want certain content to be included in recommendations, use one of the following meta tags on the specific page:

<meta name="robots" content="noindex">
<meta name="relatedbot" content="noindex">