Enhance JSON-LD generation for homepage and sitemap by including category data, improving SEO structure and breadcrumb support.

prerender.cjs

@@ -313,7 +313,8 @@ const renderApp = async (categoryData, socket) => {
     ? "index.html"
     : "index.prerender.html";
   const homeMetaTags = generateHomepageMetaTags(shopConfig.baseUrl, shopConfig);
-  const homeJsonLd = generateHomepageJsonLd(shopConfig.baseUrl, shopConfig);
+  const homepageCategories = categoryData ? collectAllCategories(categoryData) : [];
+  const homeJsonLd = generateHomepageJsonLd(shopConfig.baseUrl, shopConfig, homepageCategories);
   const combinedHomeMeta = homeMetaTags + "\n" + homeJsonLd;
   const homeSuccess = render(
     homeComponent,
@@ -385,8 +386,8 @@ const renderApp = async (categoryData, socket) => {
 
     // Special handling for Sitemap page to include category data
     if (page.filename === "sitemap" && categoryData) {
-      const allCategories = collectAllCategories(categoryData);
-      metaTags = generateSitemapJsonLd(allCategories, shopConfig.baseUrl, shopConfig);
+      const sitemapCategories = collectAllCategories(categoryData);
+      metaTags = generateSitemapJsonLd(sitemapCategories, shopConfig.baseUrl, shopConfig);
     }
 
     // Special handling for Konfigurator page to include SEO tags

prerender/seo.cjs

@@ -196,9 +196,9 @@ const generateHomepageMetaTags = (baseUrl, config) => {
   `;
 };
 
-const generateHomepageJsonLd = (baseUrl, config) => {
+const generateHomepageJsonLd = (baseUrl, config, categories = []) => {
 
-  const jsonLd = {
+  const websiteJsonLd = {
     "@context": "https://schema.org/",
     "@type": "WebSite",
     name: config.brandName,
@@ -232,9 +232,27 @@ const generateHomepageJsonLd = (baseUrl, config) => {
     ],
   };
 
-  return `<script type="application/ld+json">${JSON.stringify(
-    jsonLd
-  )}</script>`;
+  // Generate BreadcrumbList for all categories
+  const breadcrumbJsonLd = {
+    "@context": "https://schema.org",
+    "@type": "BreadcrumbList",
+    "itemListElement": categories
+      .filter(category => category.seoName) // Only include categories with seoName
+      .map((category, index) => ({
+        "@type": "ListItem",
+        "position": index + 1,
+        "name": category.name,
+        "item": `${baseUrl}/Kategorie/${category.seoName}`
+      }))
+  };
+
+  // Return both JSON-LD scripts
+  const websiteScript = `<script type="application/ld+json">${JSON.stringify(websiteJsonLd)}</script>`;
+  const breadcrumbScript = categories.length > 0 
+    ? `<script type="application/ld+json">${JSON.stringify(breadcrumbJsonLd)}</script>`
+    : '';
+
+  return websiteScript + (breadcrumbScript ? '\n' + breadcrumbScript : '');
 };
 
 const generateSitemapJsonLd = (allCategories = [], baseUrl, config) => {