diff --git a/bin/sitemap b/bin/sitemap
new file mode 100755
index 0000000..64981aa
--- /dev/null
+++ b/bin/sitemap
@@ -0,0 +1,23 @@
+#!/usr/bin/env php
+<?php
+
+declare(strict_types=1);
+
+use Light\App\Service\SitemapGenerator;
+
+chdir(__DIR__ . '/../');
+
+require 'vendor/autoload.php';
+
+$container        = require 'config/container.php';
+$sitemapGenerator = $container->get(SitemapGenerator::class);
+
+$count = $sitemapGenerator->write();
+
+printf(
+    "Done. %d url%s written to %s%s",
+    $count,
+    $count === 1 ? '' : 's',
+    $sitemapGenerator->getSitemapFile(),
+    PHP_EOL
+);
diff --git a/config/autoload/local.php.dist b/config/autoload/local.php.dist
index 40881f0..0b9acc5 100644
--- a/config/autoload/local.php.dist
+++ b/config/autoload/local.php.dist
@@ -64,11 +64,14 @@ return [
      * scopes at all; without a token the generator still runs, at a lower rate limit.
      * Non-credential settings (ignore list, output path) live in `packages.global.php`.
      */
-    'github' => [
+    'github'  => [
         'userAgent'  => 'dotkernel.com',
         'authBearer' => '',
         'org'        => 'dotkernel',
     ],
+    'sitemap' => [
+        'path' => realpath(__DIR__ . '/../../public/sitemap.xml'),
+    ],
     // `dotkernel-packages-oss-lifecycle` is intentionally absent: it has a dedicated handler
     // and is routed in Light\App\RoutesDelegator. Re-adding it here registers the path twice.
     'routes' => [
diff --git a/public/sitemap.xml b/public/sitemap.xml
new file mode 100644
index 0000000..e69de29
diff --git a/src/App/src/ConfigProvider.php b/src/App/src/ConfigProvider.php
index 5fae52c..754779a 100644
--- a/src/App/src/ConfigProvider.php
+++ b/src/App/src/ConfigProvider.php
@@ -17,17 +17,21 @@
 use Light\App\Factory\GetIndexViewHandlerFactory;
 use Light\App\Factory\GetMarkdownArticleHandlerFactory;
 use Light\App\Factory\GetPackagesViewHandlerFactory;
+use Light\App\Factory\GetSitemapViewHandlerFactory;
 use Light\App\Factory\GitHubClientFactory;
 use Light\App\Factory\PackageGeneratorFactory;
+use Light\App\Factory\SitemapGeneratorFactory;
 use Light\App\Handler\GetFeedViewHandler;
 use Light\App\Handler\GetIndexViewHandler;
 use Light\App\Handler\GetMarkdownArticleHandler;
 use Light\App\Handler\GetPackagesViewHandler;
+use Light\App\Handler\GetSitemapViewHandler;
 use Light\App\Resolver\EntityListenerResolver;
 use Light\App\Service\FeedGenerator;
 use Light\App\Service\GitHubClient;
 use Light\App\Service\GitHubClientInterface;
 use Light\App\Service\PackageGenerator;
+use Light\App\Service\SitemapGenerator;
 use Mezzio\Application;
 use Roave\PsrContainerDoctrine\EntityManagerFactory;
 use Symfony\Component\Cache\Adapter\AdapterInterface;
@@ -128,8 +132,10 @@ public function getDependencies(): array
                 GetIndexViewHandler::class            => GetIndexViewHandlerFactory::class,
                 GetFeedViewHandler::class             => GetFeedViewHandlerFactory::class,
                 GetMarkdownArticleHandler::class      => GetMarkdownArticleHandlerFactory::class,
+                GetSitemapViewHandler::class          => GetSitemapViewHandlerFactory::class,
                 GetPackagesViewHandler::class         => GetPackagesViewHandlerFactory::class,
                 FeedGenerator::class                  => FeedGeneratorFactory::class,
+                SitemapGenerator::class               => SitemapGeneratorFactory::class,
                 GitHubClient::class                   => GitHubClientFactory::class,
                 PackageGenerator::class               => PackageGeneratorFactory::class,
             ],
diff --git a/src/App/src/Factory/FeedGeneratorFactory.php b/src/App/src/Factory/FeedGeneratorFactory.php
index a05087a..154a5e5 100644
--- a/src/App/src/Factory/FeedGeneratorFactory.php
+++ b/src/App/src/Factory/FeedGeneratorFactory.php
@@ -9,7 +9,6 @@
 use Psr\Container\ContainerInterface;
 
 use function assert;
-use function rtrim;
 
 class FeedGeneratorFactory
 {
@@ -23,7 +22,7 @@ public function __invoke(ContainerInterface $container): FeedGenerator
         return new FeedGenerator(
             $postRepository,
             $config['feed']['path'],
-            rtrim($config['application']['baseUrl'] ?? '', '/') . '/',
+            $config['application']['baseUrl'] ?? '',
             $config['application']['meta']['title'] ?? '',
             $config['application']['meta']['description'] ?? '',
             $config['application']['meta']['image'] ?? '',
diff --git a/src/App/src/Factory/GetSitemapViewHandlerFactory.php b/src/App/src/Factory/GetSitemapViewHandlerFactory.php
new file mode 100644
index 0000000..237f02a
--- /dev/null
+++ b/src/App/src/Factory/GetSitemapViewHandlerFactory.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Light\App\Factory;
+
+use Light\App\Handler\GetSitemapViewHandler;
+use Light\App\Service\SitemapGenerator;
+use Light\Blog\Repository\CategoryRepository;
+use Mezzio\Template\TemplateRendererInterface;
+use Psr\Container\ContainerInterface;
+
+use function assert;
+
+class GetSitemapViewHandlerFactory
+{
+    /**
+     * @param class-string $requestedName
+     */
+    public function __invoke(ContainerInterface $container, string $requestedName): GetSitemapViewHandler
+    {
+        $template = $container->get(TemplateRendererInterface::class);
+        assert($template instanceof TemplateRendererInterface);
+
+        $categoryRepository = $container->get(CategoryRepository::class);
+        assert($categoryRepository instanceof CategoryRepository);
+
+        $sitemapGenerator = $container->get(SitemapGenerator::class);
+        assert($sitemapGenerator instanceof SitemapGenerator);
+
+        return new GetSitemapViewHandler($template, $categoryRepository, $sitemapGenerator);
+    }
+}
diff --git a/src/App/src/Factory/SitemapGeneratorFactory.php b/src/App/src/Factory/SitemapGeneratorFactory.php
new file mode 100644
index 0000000..488706c
--- /dev/null
+++ b/src/App/src/Factory/SitemapGeneratorFactory.php
@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Light\App\Factory;
+
+use Light\App\Service\SitemapGenerator;
+use Light\Blog\Repository\PostRepository;
+use Psr\Container\ContainerInterface;
+
+use function assert;
+
+class SitemapGeneratorFactory
+{
+    public function __invoke(ContainerInterface $container): SitemapGenerator
+    {
+        $postRepository = $container->get(PostRepository::class);
+        assert($postRepository instanceof PostRepository);
+
+        $config = $container->get('config');
+
+        return new SitemapGenerator(
+            $postRepository,
+            $config['sitemap']['path'],
+            $config['application']['baseUrl'] ?? '',
+        );
+    }
+}
diff --git a/src/App/src/Handler/GetSitemapViewHandler.php b/src/App/src/Handler/GetSitemapViewHandler.php
new file mode 100644
index 0000000..fffdd17
--- /dev/null
+++ b/src/App/src/Handler/GetSitemapViewHandler.php
@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Light\App\Handler;
+
+use Fig\Http\Message\StatusCodeInterface;
+use Laminas\Diactoros\Response\HtmlResponse;
+use Laminas\Diactoros\Response\XmlResponse;
+use Light\App\Service\SitemapGenerator;
+use Light\Blog\Entity\Category;
+use Light\Blog\Repository\CategoryRepository;
+use Mezzio\Template\TemplateRendererInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use Throwable;
+
+use function file_get_contents;
+use function filesize;
+use function is_file;
+
+class GetSitemapViewHandler implements RequestHandlerInterface
+{
+    public function __construct(
+        private readonly TemplateRendererInterface $template,
+        private readonly CategoryRepository $categoryRepository,
+        private readonly SitemapGenerator $sitemapGenerator,
+    ) {
+    }
+
+    public function handle(ServerRequestInterface $request): ResponseInterface
+    {
+        $sitemapFile = $this->sitemapGenerator->getSitemapFile();
+
+        if (! is_file($sitemapFile) || filesize($sitemapFile) === 0) {
+            try {
+                $this->sitemapGenerator->write();
+            } catch (Throwable) {
+            }
+        }
+
+        if (! is_file($sitemapFile) || filesize($sitemapFile) === 0) {
+            return $this->notFound($this->categoryRepository->getCategories());
+        }
+
+        return new XmlResponse(
+            (string) file_get_contents($sitemapFile),
+            StatusCodeInterface::STATUS_OK,
+            ['Content-Type' => SitemapGenerator::CONTENT_TYPE]
+        );
+    }
+
+    /**
+     * @param Category[] $categories
+     */
+    private function notFound(array $categories): HtmlResponse
+    {
+        return new HtmlResponse(
+            $this->template->render('error::404', [
+                'categories' => $categories,
+            ]),
+            StatusCodeInterface::STATUS_NOT_FOUND
+        );
+    }
+}
diff --git a/src/App/src/RoutesDelegator.php b/src/App/src/RoutesDelegator.php
index 613b0c3..fd61ac2 100644
--- a/src/App/src/RoutesDelegator.php
+++ b/src/App/src/RoutesDelegator.php
@@ -9,6 +9,7 @@
 use Light\App\Handler\GetIndexViewHandler;
 use Light\App\Handler\GetMarkdownArticleHandler;
 use Light\App\Handler\GetPackagesViewHandler;
+use Light\App\Handler\GetSitemapViewHandler;
 use Mezzio\Application;
 use Psr\Container\ContainerInterface;
 
@@ -22,6 +23,7 @@ public function __invoke(ContainerInterface $container, string $serviceName, cal
         assert($app instanceof Application);
         $app->get('/', [GetIndexViewHandler::class], 'app::index');
         $app->get('/feed/', [GetFeedViewHandler::class], 'app::feed');
+        $app->get('/sitemap/', [GetSitemapViewHandler::class], 'app::sitemap');
         $app->get('/{categorySlug}/{slug}.md', [GetMarkdownArticleHandler::class], 'app::markdown-article');
 
         // Route name kept as `page::…` because `@layout/default.html.twig` links it by name.
diff --git a/src/App/src/Service/FeedGenerator.php b/src/App/src/Service/FeedGenerator.php
index 7b2b7be..c99de8e 100644
--- a/src/App/src/Service/FeedGenerator.php
+++ b/src/App/src/Service/FeedGenerator.php
@@ -55,7 +55,7 @@ public function write(): int
         $this->appendText($dom, $channel, 'lastBuildDate', (new DateTimeImmutable())->format(DateTimeInterface::RSS));
 
         foreach ($posts as $post) {
-            $link = $this->baseUrl . $post->getCategory()->getSlug() . '/' . $post->getSlug() . '/';
+            $link = $this->baseUrl . '/' . $post->getCategory()->getSlug() . '/' . $post->getSlug() . '/';
 
             $item = $dom->createElement('item');
             $channel->appendChild($item);
diff --git a/src/App/src/Service/SitemapGenerator.php b/src/App/src/Service/SitemapGenerator.php
new file mode 100644
index 0000000..9fdbd82
--- /dev/null
+++ b/src/App/src/Service/SitemapGenerator.php
@@ -0,0 +1,74 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Light\App\Service;
+
+use DateTimeInterface;
+use DOMDocument;
+use DOMElement;
+use Light\Blog\Repository\PostRepository;
+use RuntimeException;
+
+use function count;
+
+class SitemapGenerator
+{
+    public const CONTENT_TYPE = 'application/rss+xml; charset=UTF-8';
+
+    private const SITEMAP_NAMESPACE = 'http://www.sitemaps.org/schemas/sitemap/0.9';
+
+    public function __construct(
+        private readonly PostRepository $postRepository,
+        private readonly string $sitemapFile,
+        private readonly string $baseUrl,
+    ) {
+    }
+
+    public function getSitemapFile(): string
+    {
+        return $this->sitemapFile;
+    }
+
+    public function write(): int
+    {
+        $posts = $this->postRepository->getPublishedPosts();
+
+        $dom               = new DOMDocument('1.0', 'UTF-8');
+        $dom->formatOutput = true;
+
+        $urlset = $dom->createElementNS(self::SITEMAP_NAMESPACE, 'urlset');
+        $dom->appendChild($urlset);
+
+        $this->appendUrl($dom, $urlset, $this->baseUrl);
+
+        foreach ($posts as $post) {
+            $link = $this->baseUrl . '/' . $post->getCategory()->getSlug() . '/' . $post->getSlug() . '/';
+            $this->appendUrl($dom, $urlset, $link, $post->getPostDate()->format(DateTimeInterface::W3C));
+        }
+
+        if ($dom->save($this->sitemapFile) === false) {
+            throw new RuntimeException('Unable to write sitemap.');
+        }
+
+        return count($posts) + 1;
+    }
+
+    private function appendUrl(DOMDocument $dom, DOMElement $urlset, string $loc, ?string $lastmod = null): void
+    {
+        $url = $dom->createElement('url');
+        $urlset->appendChild($url);
+
+        $this->appendText($dom, $url, 'loc', $loc);
+        if ($lastmod !== null) {
+            $this->appendText($dom, $url, 'lastmod', $lastmod);
+        }
+    }
+
+    private function appendText(DOMDocument $dom, DOMElement $parent, string $name, string $text): void
+    {
+        $el = $dom->createElement($name);
+        $el->appendChild($dom->createTextNode($text));
+        $parent->appendChild($el);
+    }
+}
diff --git a/src/App/templates/JSON-LD/index.jsonld.twig b/src/App/templates/JSON-LD/index.jsonld.twig
index 704e37d..50396ef 100644
--- a/src/App/templates/JSON-LD/index.jsonld.twig
+++ b/src/App/templates/JSON-LD/index.jsonld.twig
@@ -4,7 +4,7 @@
     "@graph": [
         {
             "@type": "WebSite",
-            "@id": "{{ absolute_url('/') }}#website",
+            "@id": "{{ absolute_url('/') }}#website ",
             "url": "{{ absolute_url('/') }}",
             "name": "Dotkernel",
             "description": "Dotkernel is a collection of open-source application skeletons built on Mezzio and Laminas - pre-configured and ready for anything from a presentation site to an enterprise-grade API.",