diff --git a/4chan_x.user.js b/4chan_x.user.js
index 2a88e5d3a..ed8bb0977 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -118,6 +118,7 @@
         'Cooldown': [true, 'Prevent "flood detected" errors.'],
         'Persistent QR': [false, 'The Quick reply won\'t disappear after posting.'],
         'Auto Hide QR': [true, 'Automatically hide the quick reply when posting.'],
+        'Remember QR size': [false, 'Remember the size of the Quick reply (Firefox only).'],
         'Remember Subject': [false, 'Remember the subject field, instead of resetting after posting.'],
         'Remember Spoiler': [false, 'Remember the spoiler state, instead of resetting after posting.'],
         'Hide Original Post Form': [true, 'Replace the normal post form with a shortcut to open the QR.']
@@ -1570,7 +1571,7 @@
       }
     },
     dialog: function() {
-      var e, fileInput, input, mimeTypes, name, spoiler, thread, threads, _i, _j, _len, _len2, _ref, _ref2;
+      var e, fileInput, input, mimeTypes, name, spoiler, ta, thread, threads, _i, _j, _len, _len2, _ref, _ref2;
       qr.el = ui.dialog('qr', 'top:0;right:0;', '\
 <div class=move>\
   Quick Reply <input type=checkbox id=autohide title=Auto-hide>\
@@ -1586,6 +1587,12 @@
   <label id=spoilerLabel><input type=checkbox id=spoiler> Spoiler Image</label>\
   <div class=warning></div>\
 </form>');
+      if (conf['Remember QR size'] && engine === 'gecko') {
+        $.on(ta = $('textarea', qr.el), 'mouseup', function() {
+          return $.set('qr.size', this.style.cssText);
+        });
+        ta.style.cssText = $.get('qr.size', '');
+      }
       mimeTypes = $('.rules').textContent.match(/: (.+) /)[1].toLowerCase().replace(/\w+/g, function(type) {
         switch (type) {
           case 'jpg':
diff --git a/changelog b/changelog
index de1e73209..48ae74871 100644
--- a/changelog
+++ b/changelog
@@ -1,4 +1,6 @@
 master
+- desuwa
+  New option: remember the size of the QR on Firefox.
 - aeosynth
   prevent post form flicker
 - Mayhem
diff --git a/script.coffee b/script.coffee
index cbf62db6b..0602c234b 100644
--- a/script.coffee
+++ b/script.coffee
@@ -38,6 +38,7 @@ config =
       'Cooldown':                     [true,  'Prevent "flood detected" errors.']
       'Persistent QR':                [false, 'The Quick reply won\'t disappear after posting.']
       'Auto Hide QR':                 [true,  'Automatically hide the quick reply when posting.']
+      'Remember QR size':             [false, 'Remember the size of the Quick reply (Firefox only).']
       'Remember Subject':             [false, 'Remember the subject field, instead of resetting after posting.']
       'Remember Spoiler':             [false, 'Remember the spoiler state, instead of resetting after posting.']
       'Hide Original Post Form':      [true,  'Replace the normal post form with a shortcut to open the QR.']
@@ -1189,6 +1190,11 @@ qr =
   <div class=warning></div>
 </form>'
 
+    if conf['Remember QR size'] and engine is 'gecko'
+      $.on ta = $('textarea', qr.el), 'mouseup', ->
+        $.set 'qr.size', @style.cssText
+      ta.style.cssText = $.get 'qr.size', ''
+    
     # Allow only this board's supported files.
     mimeTypes = $('.rules').textContent.match(/: (.+) /)[1].toLowerCase().replace /\w+/g, (type) ->
       switch type