diff --git a/_config.yml b/_config.yml
index 37a2013a8..9042f7bf2 100644
--- a/_config.yml
+++ b/_config.yml
@@ -9,7 +9,6 @@ abstract: >
 baseurl: "" # the subpath of your site, e.g. /blog
 url: "https://timetobuildbob.github.io" # the base hostname & protocol for your site
 author: Bob
-plausible_domain: timetobuildbob.github.io
 timezone: UTC
 twitter_username: TimeToBuildBob
 github_username: TimeToBuildBob
@@ -79,3 +78,11 @@ plugins:
  - jekyll-feed
  - jekyll-sitemap
  - jekyll-toc
+
+# Analytics (PostHog)
+# Set posthog_api_key to enable PostHog analytics
+# posthog_api_key: phx_...
+posthog_api_host: https://eu.i.posthog.com
+
+# Legacy: Plausible Analytics (will be removed after PostHog migration)
+# plausible_domain: timetobuildbob.github.io
diff --git a/_layouts/default.pug b/_layouts/default.pug
index 78cce8e60..93a010b66 100644
--- a/_layouts/default.pug
+++ b/_layouts/default.pug
@@ -61,7 +61,23 @@ html(lang="en")
 
     script(src="/assets/js/loading.js" defer)
 
-    //- Plausible Analytics (privacy-friendly, no cookies)
+    //- PostHog Analytics
+    //- To enable: Add 'posthog_api_key: phx_...' to _config.yml
+    | {% if site.posthog_api_key %}
+    script.
+      !function(t,e){var o,n,p,r;e.__SV||(window.posthog=e,e._i=[],e.init=function(i,s,a){function g(t,e){var o=e.split(".");2==o.length&&(t=t[o[0]],e=o[1]),t[e]=function(){t.push([e].concat(Array.prototype.slice.call(arguments,0)))}}(p=t.createElement("script")).type="text/javascript",p.async=!0,p.src=s.api_host.replace(".i.posthog.com","-assets.i.posthog.com")+"/static/array.js",(r=t.getElementsByTagName("script")[0]).parentNode.insertBefore(p,r);var u=e;for(void 0!==a?u=e[a]=[]:a="posthog",u.people=u.people||[],u.toString=function(t){var e="posthog";return"posthog"!==a&&(e+="."+a),t||(e+=" (stub)"),e},u.people.toString=function(){return u.toString(1)+".people (stub)"},o="init capture register register_once register_for_session unregister unregister_for_session getFeatureFlag getFeatureFlagPayload isFeatureEnabled reloadFeatureFlags updateEarlyAccessFeatureEnrollment getEarlyAccessFeatures on onFeatureFlags onSessionId getSurveys getActiveMatchingSurveys renderSurvey canRenderSurvey getNextSurveyStep identify setPersonProperties group resetGroups setPersonPropertiesForFlags resetPersonPropertiesForFlags setGroupPropertiesForFlags resetGroupPropertiesForFlags reset get_distinct_id getGroups get_group_properties alias".split(" "),n=0;n<o.length;n++)g(u,o[n]);e._i.push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);
+      posthog.init('{{ site.posthog_api_key }}', {
+        api_host: '{{ site.posthog_api_host | default: "https://eu.i.posthog.com" }}',
+        person_profiles: 'identified_only',
+        loaded: function(posthog) {
+          if (window.location.hostname === 'localhost') {
+            posthog.opt_out_capturing();
+          }
+        }
+      })
+    | {% endif %}
+
+    //- Plausible Analytics (privacy-friendly, no cookies) — legacy, will remove after PostHog migration
     //- To enable: Add 'plausible_domain: timetobuildbob.github.io' to _config.yml
     | {% if site.plausible_domain %}
     script(defer data-domain="{{ site.plausible_domain }}" src="https://plausible.io/js/script.js")