<meta name="author" content="{{ .Site.Params.Author }}" /> {{ if .IsPage }} {{ if .Params.tags }} <meta name="keywords" content='{{ delimit (sort .Params.tags) ", "}}' /> {{ end }} {{ if .Params.description }} <meta name="description" content="{{ .Params.description }}" /> {{ else }} <meta name="description" content="{{ substr .Summary 20 }}" /> {{ end }} {{ else }} {{ if .Site.Params.description }} <meta name="description" content="{{ .Site.Params.description }}" /> {{ end }} {{ end }}