pivoine.art/layouts/partials/head/twitter.html

{{- $title := .Title | default .Site.Title -}}
{{- $desc := .Description | default .Summary | default .Site.Params.description | plainify | truncate 200 -}}

{{/* Resolve image: page resource cover.* > .Params.image > site default */}}
{{- $image := "" -}}
{{- with .Resources.GetMatch "cover.*" -}}
  {{- $img := .Resize "1200x webp q90" -}}
  {{- $image = $img.Permalink -}}
{{- else -}}
  {{- with $.Params.image -}}
    {{- $image = . -}}
  {{- else -}}
    {{- $image = $.Site.Params.images.default | default "/images/og-default.png" -}}
  {{- end -}}
{{- end -}}
{{- if and $image (not (strings.HasPrefix $image "http")) -}}
  {{- $image = $image | absURL -}}
{{- end -}}

{{/* Determine card type - use large image when we have one */}}
{{- $cardType := "summary" -}}
{{- if $image -}}
  {{- $cardType = "summary_large_image" -}}
{{- end -}}

<meta name="twitter:card" content="{{ $cardType }}">
<meta name="twitter:title" content="{{ $title }}">
<meta name="twitter:description" content="{{ $desc }}">

{{- if $image }}
<meta name="twitter:image" content="{{ $image }}">
<meta name="twitter:image:alt" content="{{ $title }}">
{{- end }}