src/partials/head-info.hbs

    {{#if page.canonicalUrl}}
    <link rel="canonical" href="{{page.canonicalUrl}}">
    {{/if}}
    {{#if page.component}}
    {{#if page.description}}
    <meta name="description" content="{{page.description}}">
    {{/if}}
    {{#if page.keywords}}
    <meta name="keywords" content="{{page.keywords}}">
    {{/if}}
    {{/if}}
    {{#if (or antoraVersion site.antoraVersion)}}
    <meta name="generator" content="Antora {{or antoraVersion site.antoraVersion}}">
    {{/if}}