hugo-theme-stack/layouts/partials/article-list/default.html

<article class="{{ if .Params.image }}has-image{{ end }}">
    {{ if .Params.image }}
        {{- $image := partial "helper/image" . -}}
        {{- $thumbnailNotDesktop := $image.Resize "x500 smart" -}}
        
    <div class="article-image">
        <a href="{{ .Permalink }}">
            <img src="{{ $thumbnailNotDesktop.RelPermalink }}" 
                width="{{ $thumbnailNotDesktop.Width }}" height="{{ $thumbnailNotDesktop.Height }}" loading="lazy"
                alt="Featured image of post {{ .Title }}" />
        </a>
    </div>
    {{ end }}

    {{ partial "article/components/details" . }}
</article>