The official documentation sets the property attribute and prefixes it with “og:”
<meta property="og:title" content="" >
<meta property="og:site_name" content="">
<meta property="og:type" content="">
<meta property="og:url" content="">
<meta property="og:description" content="">
<meta property="og:image" content="">
But some people use this nicer syntax:
<meta name="type" content="">
<meta name="title" content="">
<meta name="url" content="">
<meta name="description" content="">
<meta name="image" content="">
Fediverse creator, Mastodon recommends:
<meta name="fediverse:creator" content="">
but I have seen some people with:
<meta property="fediverse:creator" content="">
{{< details class=“note” >}} Hugo as an internal template for opengraph, go visit its documentation if you are a user. {{< /details >}}