{{ $img := dict }}
{{ with .Get "name" }}
    {{ $img = $.Page.Resources.GetMatch . }}
{{ else }}
    {{ errorf "No name given to img shortcode" }}
{{ end }}

{{/* Space separated list of classes to apply to the <img> tag */}}
{{ $classes := .Get "class" }}

{{ $altText := .Get "alt" | default $img.Params.alt }}
{{ if not $altText }}
    {{ warnf "Image doesn't have alt text: %s" $img.RelPermalink }}
{{ end }}

{{ $resizedImg := $img.Fit "1280x1280" }}
<img src="{{ $resizedImg.RelPermalink }}"
     width="{{ $resizedImg.Width }}"
     height="{{ $resizedImg.Height }}"
     alt="{{ $altText }}"
     {{ with $classes }}class="{{ . }}"{{ end }}>