hugo-theme-next/layouts/partials/head/meta.html

<meta itemprop="name" content="{{ .Title }}" />
<meta itemprop="description" content="{{ .Description | default .Site.Params.description }}" />
{{- if .IsPage }}
{{- with .PublishDate }}
<meta itemprop="datePublished" {{ . }} />
{{- end }}
{{- with .Lastmod }}
<meta itemprop="dateModified" {{ . }} />
{{- end }}
{{- end }}
{{- $img := .Site.Params.customLogo | default .Site.Params.avatar.url }}
{{- if and .IsPage (isset .Params "images") }}
  {{- $img := index .Params.images 0 }}
{{- end }}
{{- .Scratch.Set "metaImg" $img }}
<meta itemprop="image" content="{{ $img | absURL }}" />
<meta itemprop="keywords" content="{{ if and .IsPage (isset .Params "tags")}}{{ delimit .Params.tags "," }}{{ else }}{{ .Site.Params.keywords }}{{ end }}" />
{{- if .Site.Params.darkmode }}
<meta name="theme-color" content="{{ .Site.Params.themeColor.dark }}" media="(prefers-color-scheme: dark)" />
{{- else }}
<meta name="theme-color" content="{{ .Site.Params.themeColor.light }}" media="(prefers-color-scheme: light)" />
{{- end }}