OpenElements · hendrikebbers · Jun 12, 2026 · Jun 12, 2026 · Jun 12, 2026 · Jun 12, 2026
diff --git a/src/app/[locale]/layout.tsx b/src/app/[locale]/layout.tsx
@@ -36,6 +36,9 @@ export async function generateMetadata({
     de: 'Open Source, aber richtig - Open Elements ist ein modernes Unternehmen mit einem Fokus auf Open Source und Java',
   };
 
+  const feedTitle =
+    locale === 'de' ? 'Open Elements – Artikel' : 'Open Elements – Articles';
+
   return {
     title: titles[locale as keyof typeof titles] || titles.en,
     description:
@@ -47,6 +50,11 @@ export async function generateMetadata({
       'open source Support',
       'Java Support',
     ],
+    alternates: {
+      types: {
+        'application/rss+xml': [{ url: '/feed.xml', title: feedTitle }],
+      },
+    },
     openGraph: {
       type: 'website',
       url:
@@ -92,6 +100,7 @@ export default async function LocaleLayout({
       suppressHydrationWarning>
       <head>
         <link rel="icon" href="/icons/favicon.ico" />
+        <link rel="sitemap" type="application/xml" href="/sitemap.xml" />
       </head>
       <body
         className={`${montserrat.className} bg-blue`}

diff --git a/src/app/feed.xml/route.ts b/src/app/feed.xml/route.ts
@@ -0,0 +1,12 @@
+import { NextResponse } from 'next/server';
+import { buildPostsRssFeed, rssResponseHeaders } from '@/lib/rss';
+
+export const dynamic = 'force-static';
+
+export function GET() {
+  const xml = buildPostsRssFeed('/feed.xml');
+  return new NextResponse(xml, {
+    status: 200,
+    headers: rssResponseHeaders(),
+  });
+}
diff --git a/src/app/posts/index.xml/route.ts b/src/app/posts/index.xml/route.ts
@@ -0,0 +1,9 @@
+import { permanentRedirect } from 'next/navigation';
+
+export const dynamic = 'force-static';
+
+// Permanent redirect alias to the canonical feed at /feed.xml.
+// Keeps existing subscribers working while consolidating to a single source of truth.
+export function GET() {
+  permanentRedirect('/feed.xml');
+}
diff --git a/src/lib/rss.ts b/src/lib/rss.ts
@@ -0,0 +1,80 @@
+import { getAllPosts } from './markdown';
+
+const SITE_URL = 'https://open-elements.com';
+const SITE_TITLE = 'Open Elements';
+const SITE_DESCRIPTION = 'Open Source made right';
+
+function escapeXml(value: string): string {
+  return value
+    .replace(/&/g, '&amp;')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;')
+    .replace(/"/g, '&quot;')
+    .replace(/'/g, '&apos;');
+}
+
+function toRfc822(dateInput: string | Date): string {
+  const date = new Date(dateInput);
+  if (Number.isNaN(date.getTime())) {
+    return new Date(0).toUTCString();
+  }
+  return date.toUTCString();
+}
+
+/**
+ * Build an RSS 2.0 feed XML string for the posts of a given locale.
+ * The `feedPath` is the absolute path at which this feed is served (used for the
+ * atom self-link), e.g. "/feed.xml" or "/posts/index.xml".
+ */
+export function buildPostsRssFeed(feedPath: string, locale = 'en'): string {
+  const posts = getAllPosts(locale);
+  const localePath = locale === 'en' ? '' : `/${locale}`;
+  const channelLink = `${SITE_URL}${localePath}/posts`;
+  const feedUrl = `${SITE_URL}${feedPath}`;
+  const language = locale === 'de' ? 'de-de' : 'en-us';
+  const lastBuildDate = posts.length
+    ? toRfc822(posts[0].frontmatter.date)
+    : new Date().toUTCString();
+
+  const items = posts
+    .map(post => {
+      const url = `${SITE_URL}${localePath}/posts/${post.slug}`;
+      const title = escapeXml(post.frontmatter.title ?? '');
+      const description = escapeXml(post.frontmatter.excerpt ?? '');
+      const pubDate = toRfc822(post.frontmatter.date);
+      const author = escapeXml(post.frontmatter.author ?? 'Open Elements');
+      return [
+        '    <item>',
+        `      <title>${title}</title>`,
+        `      <link>${escapeXml(url)}</link>`,
+        `      <pubDate>${pubDate}</pubDate>`,
+        `      <guid isPermaLink="true">${escapeXml(url)}</guid>`,
+        `      <description>${description}</description>`,
+        `      <dc:creator>${author}</dc:creator>`,
+        '    </item>',
+      ].join('\n');
+    })
+    .join('\n');
+
+  return [
+    '<?xml version="1.0" encoding="UTF-8"?>',
+    '<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/">',
+    '  <channel>',
+    `    <title>${escapeXml(SITE_TITLE)}</title>`,
+    `    <link>${escapeXml(channelLink)}</link>`,
+    `    <description>${escapeXml(SITE_DESCRIPTION)}</description>`,
+    `    <language>${language}</language>`,
+    `    <lastBuildDate>${lastBuildDate}</lastBuildDate>`,
+    `    <atom:link href="${escapeXml(feedUrl)}" rel="self" type="application/rss+xml" />`,
+    items,
+    '  </channel>',
+    '</rss>',
+  ].join('\n');
+}
+
+export function rssResponseHeaders(): HeadersInit {
+  return {
+    'Content-Type': 'application/rss+xml; charset=utf-8',
+    'Cache-Control': 'public, s-maxage=3600, stale-while-revalidate=86400',
+  };
+}