Hugo JSON Feed Template add to layouts/index.json

index.json

{
    "version": "https://jsonfeed.org/version/1",
    "title": {{ .Site.Title | jsonify  }},
    "home_page_url": {{ .Permalink | jsonify }},
    {{ with  .OutputFormats.Get "json" -}}
    "feed_url": {{ .Permalink | jsonify  }},
    {{- end }}
    {{ if (.Site.Params.author) or (.Site.Params.author_url) -}}
    "author": {
        {{ if .Site.Params.author -}}
        "name": {{ .Site.Params.author | jsonify }},
        {{- end }}
        {{ if .Site.Params.author_url -}}
        "url": {{ .Site.Params.author_url | jsonify }}
        {{- end }}
    },
    {{- end }}
    {{ if .Data.Pages }}
    "items": [
        {{ range $index, $element := first 10 .Data.Pages }}
        {{if $index }},{{end}} {
            "title": {{ $element.Title | jsonify }},
            "id": {{ $element.Permalink | jsonify }},
            "url": {{ $element.Permalink | jsonify }},
            "content_html": {{ $element.Content | jsonify }},
            "date_published": {{ $element.Date.Format "2006-02-01T15:04:05-0700" | jsonify }}
        }
        {{ end }}
    ]
    {{ end }}
}