diff --git a/public/llms.txt b/public/llms.txt
new file mode 100644
index 0000000..9cf6854
--- /dev/null
+++ b/public/llms.txt
@@ -0,0 +1,21 @@
+# WeatherXM Firmware Flasher
+
+> Browser-based firmware tools for WeatherXM WG1200 gateways and WS1300 weather stations.
+
+## Canonical site
+- https://flasher.weatherxm.com/
+
+## Device flows
+- WG1200 USB firmware flasher: https://flasher.weatherxm.com/wg1200
+- WS1300 Bluetooth firmware updater: https://flasher.weatherxm.com/ws1300/
+
+## Related resources
+- WeatherXM stations: https://weatherxm.com/stations/
+- WeatherXM Open Technology: https://weatherxm.com/open/
+- WeatherXM documentation: https://docs.weatherxm.com/
+- WeatherXM GitHub: https://github.com/WeatherXM
+
+## Notes
+- WG1200 firmware can be switched between supported WeatherXM and Meshtastic modes using the browser tool.
+- WS1300 firmware can be updated over Bluetooth from a compatible browser.
+- The development-only WS1300 route is intentionally excluded from indexing.
diff --git a/public/robots.txt b/public/robots.txt
index dca7f5c..2715009 100644
--- a/public/robots.txt
+++ b/public/robots.txt
@@ -1,3 +1,8 @@
 User-agent: *
 Allow: /
 Disallow: /ws1300/dev
+
+User-agent: OAI-SearchBot
+Allow: /
+
+Sitemap: https://flasher.weatherxm.com/sitemap.xml
diff --git a/public/sitemap.xml b/public/sitemap.xml
new file mode 100644
index 0000000..309baa8
--- /dev/null
+++ b/public/sitemap.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  <url><loc>https://flasher.weatherxm.com/</loc></url>
+  <url><loc>https://flasher.weatherxm.com/wg1200</loc></url>
+  <url><loc>https://flasher.weatherxm.com/ws1300/</loc></url>
+</urlset>
diff --git a/src/layouts/SiteLayout.astro b/src/layouts/SiteLayout.astro
index 080db85..d6da2cb 100644
--- a/src/layouts/SiteLayout.astro
+++ b/src/layouts/SiteLayout.astro
@@ -11,6 +11,21 @@ interface Props {
 }
 
 const { title, description, device, noindex = false } = Astro.props;
+const canonicalUrl = new URL(Astro.url.pathname, 'https://flasher.weatherxm.com').href;
+const schema = {
+  '@context': 'https://schema.org',
+  '@type': 'WebApplication',
+  name: title,
+  description,
+  url: canonicalUrl,
+  applicationCategory: 'UtilitiesApplication',
+  operatingSystem: 'Any',
+  publisher: {
+    '@type': 'Organization',
+    name: 'WeatherXM',
+    url: 'https://weatherxm.com'
+  }
+};
 ---
 
 <!doctype html>
@@ -28,6 +43,14 @@ const { title, description, device, noindex = false } = Astro.props;
     <meta name="generator" content={Astro.generator} />
     <title>{title}</title>
     <meta name="description" content={description} />
+    <link rel="canonical" href={canonicalUrl} />
+    <meta property="og:type" content="website" />
+    <meta property="og:site_name" content="WeatherXM Firmware Flasher" />
+    <meta property="og:title" content={title} />
+    <meta property="og:description" content={description} />
+    <meta property="og:url" content={canonicalUrl} />
+    <meta name="twitter:card" content="summary" />
+    <script is:inline type="application/ld+json" set:html={JSON.stringify(schema)} />
     {noindex && <meta name="robots" content="noindex, nofollow" />}
   </head>
 
diff --git a/src/pages/wg1200.astro b/src/pages/wg1200.astro
index b256cbf..1fd5f8c 100644
--- a/src/pages/wg1200.astro
+++ b/src/pages/wg1200.astro
@@ -30,8 +30,24 @@ import Footer from '../components/Footer.astro';
     <title>WG1200 Firmware Web Flasher — WeatherXM Tri-Protocol & Meshtastic</title>
     <meta
       name="description"
-      content="Convert your WeatherXM WG1200 gateway in to a LoRa Mesh tri-protocol or a full Meshtastic node over USB. Protected device credentials remain intact."
+      content="Convert your WeatherXM WG1200 gateway into a LoRa Mesh tri-protocol or full Meshtastic node over USB while keeping protected device credentials intact."
     />
+    <link rel="canonical" href="https://flasher.weatherxm.com/wg1200" />
+    <meta property="og:type" content="website" />
+    <meta property="og:site_name" content="WeatherXM Firmware Flasher" />
+    <meta property="og:title" content="WG1200 Firmware Web Flasher — WeatherXM Tri-Protocol & Meshtastic" />
+    <meta property="og:description" content="Switch WeatherXM WG1200 firmware between WeatherXM tri-protocol and full Meshtastic over USB." />
+    <meta property="og:url" content="https://flasher.weatherxm.com/wg1200" />
+    <script is:inline type="application/ld+json" set:html={JSON.stringify({
+      '@context': 'https://schema.org',
+      '@type': 'WebApplication',
+      name: 'WeatherXM WG1200 Firmware Web Flasher',
+      description: 'Browser-based USB firmware flasher for the WeatherXM WG1200 gateway.',
+      url: 'https://flasher.weatherxm.com/wg1200',
+      applicationCategory: 'UtilitiesApplication',
+      operatingSystem: 'Any',
+      publisher: { '@type': 'Organization', name: 'WeatherXM', url: 'https://weatherxm.com' }
+    })} />
   </head>
 
   <body class="min-h-screen bg-dark-atmospheric bg-dot-grid text-white font-sans antialiased flex flex-col justify-between selection:bg-wxm-beacon selection:text-white">