diff --git a/4chan_x.coffee b/4chan_x.coffee
index 30d24a388..f33584d05 100644
--- a/4chan_x.coffee
+++ b/4chan_x.coffee
@@ -28,6 +28,7 @@ config =
     'Thread Navigation':   [true, 'Navigate to previous / next thread']
     'Thread Updater':      [true, 'Update threads']
     'Thread Watcher':      [true, 'Bookmark threads']
+    'Unread Count':        [true, 'Show unread post count in tab title']
 
 #utility
 AEOS =
@@ -1077,6 +1078,15 @@ for el in $$ '#recaptcha_table a'
 recaptcha = $ '#recaptcha_response_field'
 recaptcha.addEventListener('keydown', recaptchaListener, true)
 
+scroll = ->
+    height = document.body.clientHeight
+    while reply = g.replies[0]
+        bottom = reply.getBoundingClientRect().bottom
+        if bottom > height #post is not completely read
+            break
+        g.replies.shift()
+    document.title = document.title.replace /\d+/, g.replies.length
+
 #major features
 if getConfig 'Image Expansion'
     delform = $ 'form[name=delform]'
@@ -1307,5 +1317,11 @@ else #not reply
         for a in as
             a.addEventListener('click', expandComment, true)
 
+if getConfig 'Unread Count'
+    g.replies = $$ 'td.reply, td.replyhl'
+    document.title = '(0) ' + document.title
+    scroll()
+    document.addEventListener 'scroll', scroll, true
+
 callback() for callback in g.callbacks
 d.body.addEventListener('DOMNodeInserted', nodeInserted, true)
diff --git a/4chan_x.js b/4chan_x.js
index 5b7868c88..809dd90f2 100644
--- a/4chan_x.js
+++ b/4chan_x.js
@@ -27,7 +27,8 @@
     'Thread Hiding': [true, 'Hide entire threads'],
     'Thread Navigation': [true, 'Navigate to previous / next thread'],
     'Thread Updater': [true, 'Update threads'],
-    'Thread Watcher': [true, 'Bookmark threads']
+    'Thread Watcher': [true, 'Bookmark threads'],
+    'Unread Count': [true, 'Show unread post count in tab title']
   };
   AEOS = {
     init: function() {
@@ -1359,6 +1360,18 @@
   }
   recaptcha = $('#recaptcha_response_field');
   recaptcha.addEventListener('keydown', recaptchaListener, true);
+  scroll = function() {
+    var bottom, height, reply;
+    height = document.body.clientHeight;
+    while (reply = g.replies[0]) {
+      bottom = reply.getBoundingClientRect().bottom;
+      if (bottom > height) {
+        break;
+      }
+      g.replies.shift();
+    }
+    return document.title = document.title.replace(/\d+/, g.replies.length);
+  };
   if (getConfig('Image Expansion')) {
     delform = $('form[name=delform]');
     expand = n('div', {
@@ -1671,6 +1684,12 @@
       }
     }
   }
+  if (getConfig('Unread Count')) {
+    g.replies = $$('td.reply, td.replyhl');
+    document.title = '(0) ' + document.title;
+    scroll();
+    document.addEventListener('scroll', scroll, true);
+  }
   _ref4 = g.callbacks;
   for (_m = 0, _len6 = _ref4.length; _m < _len6; _m++) {
     callback = _ref4[_m];