--- a/dom/browser-element/BrowserElementChildPreload.js
+++ b/dom/browser-element/BrowserElementChildPreload.js
@@ -58,16 +58,17 @@ const OBSERVED_EVENTS = [
   'audio-playback',
   'activity-done',
   'invalid-widget'
 ];
 
 const COMMAND_MAP = {
   'cut': 'cmd_cut',
   'copy': 'cmd_copyAndCollapseToEnd',
+  'copyImage': 'cmd_copyImage',
   'paste': 'cmd_paste',
   'selectall': 'cmd_selectAll'
 };
 
 /**
  * The BrowserElementChild implements one half of <iframe mozbrowser>.
  * (The other half is, unsurprisingly, BrowserElementParent.)
  *
@@ -850,37 +851,49 @@ BrowserElementChild.prototype = {
     }
 
     this._ctxCounter++;
     this._ctxHandlers = {};
 
     var elem = e.target;
     var menuData = {systemTargets: [], contextmenu: null};
     var ctxMenuId = null;
+    var hasImgElement = false;
+
+    // Set the event target as the copy image command needs it to
+    // determine what was context-clicked on.
+    docShell.contentViewer.QueryInterface(Ci.nsIContentViewerEdit).setCommandNode(elem);
 
     while (elem && elem.parentNode) {
       var ctxData = this._getSystemCtxMenuData(elem);
       if (ctxData) {
         menuData.systemTargets.push({
           nodeName: elem.nodeName,
           data: ctxData
         });
       }
 
       if (!ctxMenuId && 'hasAttribute' in elem && elem.hasAttribute('contextmenu')) {
         ctxMenuId = elem.getAttribute('contextmenu');
       }
+
+      // Enable copy image option
+      if (elem.nodeName == 'IMG') {
+        hasImgElement = true;
+      }
+
       elem = elem.parentNode;
     }
 
-    if (ctxMenuId) {
-      var menu = e.target.ownerDocument.getElementById(ctxMenuId);
-      if (menu) {
-        menuData.contextmenu = this._buildMenuObj(menu, '');
+    if (ctxMenuId || hasImgElement) {
+      var menu = null;
+      if (ctxMenuId) {
+        menu = e.target.ownerDocument.getElementById(ctxMenuId);
       }
+      menuData.contextmenu = this._buildMenuObj(menu, '', hasImgElement);
     }
 
     // Pass along the position where the context menu should be located
     menuData.clientX = e.clientX;
     menuData.clientY = e.clientY;
 
     // The value returned by the contextmenu sync call is true if the embedder
     // called preventDefault() on its contextmenu event.
@@ -1203,41 +1216,54 @@ BrowserElementChild.prototype = {
         id: domRequestID,
         successRv: blob
       });
     }, mimeType);
   },
 
   _recvFireCtxCallback: function(data) {
     debug("Received fireCtxCallback message: (" + data.json.menuitem + ")");
-    // We silently ignore if the embedder uses an incorrect id in the callback
-    if (data.json.menuitem in this._ctxHandlers) {
+
+    if (data.json.menuitem == 'copy-image') {
+      // Set command
+      data.json.command = 'copyImage';
+      this._recvDoCommand(data);
+    } else if (data.json.menuitem in this._ctxHandlers) {
       this._ctxHandlers[data.json.menuitem].click();
       this._ctxHandlers = {};
     } else {
+      // We silently ignore if the embedder uses an incorrect id in the callback
       debug("Ignored invalid contextmenu invocation");
     }
   },
 
-  _buildMenuObj: function(menu, idPrefix) {
+  _buildMenuObj: function(menu, idPrefix, hasImgElement) {
     var menuObj = {type: 'menu', items: []};
-    this._maybeCopyAttribute(menu, menuObj, 'label');
+    // Customized context menu
+    if (menu) {
+      this._maybeCopyAttribute(menu, menuObj, 'label');
 
-    for (var i = 0, child; child = menu.children[i++];) {
-      if (child.nodeName === 'MENU') {
-        menuObj.items.push(this._buildMenuObj(child, idPrefix + i + '_'));
-      } else if (child.nodeName === 'MENUITEM') {
-        var id = this._ctxCounter + '_' + idPrefix + i;
-        var menuitem = {id: id, type: 'menuitem'};
-        this._maybeCopyAttribute(child, menuitem, 'label');
-        this._maybeCopyAttribute(child, menuitem, 'icon');
-        this._ctxHandlers[id] = child;
-        menuObj.items.push(menuitem);
+      for (var i = 0, child; child = menu.children[i++];) {
+        if (child.nodeName === 'MENU') {
+          menuObj.items.push(this._buildMenuObj(child, idPrefix + i + '_', false));
+        } else if (child.nodeName === 'MENUITEM') {
+          var id = this._ctxCounter + '_' + idPrefix + i;
+          var menuitem = {id: id, type: 'menuitem'};
+          this._maybeCopyAttribute(child, menuitem, 'label');
+          this._maybeCopyAttribute(child, menuitem, 'icon');
+          this._ctxHandlers[id] = child;
+          menuObj.items.push(menuitem);
+        }
       }
     }
+    // "Copy Image" menu item
+    if (hasImgElement) {
+      menuObj.items.push({id: 'copy-image'});
+    }
+
     return menuObj;
   },
 
   _recvSetVisible: function(data) {
     debug("Received setVisible message: (" + data.json.visible + ")");
     if (this._forcedVisible == data.json.visible) {
       return;
     }