diff --git a/apps/common/main/lib/controller/ReviewChanges.js b/apps/common/main/lib/controller/ReviewChanges.js
index 9fe50e74d..b1aa9de10 100644
--- a/apps/common/main/lib/controller/ReviewChanges.js
+++ b/apps/common/main/lib/controller/ReviewChanges.js
@@ -74,7 +74,8 @@ define([
                     'reviewchange:reject':      _.bind(this.onRejectClick, this),
                     'reviewchange:delete':      _.bind(this.onDeleteClick, this),
                     'reviewchange:preview':     _.bind(this.onBtnPreviewClick, this),
-                    'reviewchanges:view':       _.bind(this.onReviewViewClick, this),
+                    'reviewchange:view':        _.bind(this.onReviewViewClick, this),
+                    'reviewchange:compare':     _.bind(this.onCompareClick, this),
                     'lang:document':            _.bind(this.onDocLanguage, this),
                     'collaboration:coauthmode': _.bind(this.onCoAuthMode, this)
                 },
@@ -554,6 +555,53 @@ define([
             Common.NotificationCenter.trigger('edit:complete', this.view);
         },
 
+        onCompareClick: function(item) {
+            if (this.api) {
+                if (item === 'file') {
+                    // if (this.api)
+                    //     this.api.asc_addDocument();
+                    Common.NotificationCenter.trigger('edit:complete', this.view);
+                } else if (item === 'url') {
+                    var me = this;
+                    (new Common.Views.ImageFromUrlDialog({
+                        title: me.textUrl,
+                        handler: function(result, value) {
+                            if (result == 'ok') {
+                                if (me.api) {
+                                    var checkUrl = value.replace(/ /g, '');
+                                    if (!_.isEmpty(checkUrl)) {
+                                        // me.api.AddDocumentUrl(checkUrl);
+                                    }
+                                }
+                                Common.NotificationCenter.trigger('edit:complete', me.view);
+                            }
+                        }
+                    })).show();
+                } else if (item === 'storage') {
+                    // if (this.toolbar.mode.canRequestInsertImage) {
+                    //     Common.Gateway.requestInsertImage();
+                    // } else {
+                    //     (new Common.Views.SelectFileDlg({
+                    //         fileChoiceUrl: this.toolbar.mode.fileChoiceUrl.replace("{fileExt}", "").replace("{documentType}", "ImagesOnly")
+                    //     })).on('selectfile', function(obj, file){
+                    //         me.insertImage(file);
+                    //     }).show();
+                    // }
+                } else if (item === 'settings') {
+                    // show settings dialog
+                }
+            }
+            Common.NotificationCenter.trigger('edit:complete', this.view);
+        },
+
+        insertImage: function(data) {
+            if (data && data.url) {
+                this.toolbar.fireEvent('insertimage', this.toolbar);
+                this.api.AddImageUrl(data.url, undefined, data.token);// for loading from storage
+                Common.component.Analytics.trackEvent('ToolBar', 'Image');
+            }
+        },
+
         turnDisplayMode: function(mode) {
             if (this.api) {
                 if (mode === 'final')
@@ -797,6 +845,7 @@ define([
         textTableRowsDel: '<b>Table Rows Deleted<b/>',
         textParaMoveTo: '<b>Moved:</b>',
         textParaMoveFromUp: '<b>Moved Up:</b>',
-        textParaMoveFromDown: '<b>Moved Down:</b>'
+        textParaMoveFromDown: '<b>Moved Down:</b>',
+        textUrl: 'Paste a document URL'
     }, Common.Controllers.ReviewChanges || {}));
 });
\ No newline at end of file
diff --git a/apps/common/main/lib/view/ImageFromUrlDialog.js b/apps/common/main/lib/view/ImageFromUrlDialog.js
index 63b0ea685..9f25ef434 100644
--- a/apps/common/main/lib/view/ImageFromUrlDialog.js
+++ b/apps/common/main/lib/view/ImageFromUrlDialog.js
@@ -55,7 +55,7 @@ define([
             this.template = [
                 '<div class="box">',
                     '<div class="input-row">',
-                        '<label>' + this.textUrl + '</label>',
+                        '<label>' + (this.options.title || this.textUrl) + '</label>',
                     '</div>',
                     '<div id="id-dlg-url" class="input-row"></div>',
                 '</div>',
diff --git a/apps/common/main/lib/view/ReviewChanges.js b/apps/common/main/lib/view/ReviewChanges.js
index 2325f1b31..5e5f4daaf 100644
--- a/apps/common/main/lib/view/ReviewChanges.js
+++ b/apps/common/main/lib/view/ReviewChanges.js
@@ -79,6 +79,10 @@ define([
                     '<span id="btn-change-reject" class="btn-slot text x-huge"></span>' +
                 '</div>' +
                 '<div class="separator long review"/>' +
+                '<div class="group">' +
+                    '<span id="btn-compare" class="btn-slot text x-huge"></span>' +
+                '</div>' +
+                '<div class="separator long compare"/>' +
                 '<div class="group no-group-mask">' +
                     '<span id="slot-btn-chat" class="btn-slot text x-huge"></span>' +
                 '</div>' +
@@ -115,6 +119,14 @@ define([
                     me.fireEvent('reviewchange:reject', [menu, item]);
                 });
 
+                this.btnCompare.on('click', function (e) {
+                    me.fireEvent('reviewchange:compare', ['file']);
+                });
+
+                this.btnCompare.menu.on('item:click', function (menu, item, e) {
+                    me.fireEvent('reviewchange:compare', [item.value]);
+                });
+
                 this.btnsTurnReview.forEach(function (button) {
                     button.on('click', _click_turnpreview.bind(me));
                 });
@@ -129,7 +141,7 @@ define([
                 });
 
                 this.btnReviewView && this.btnReviewView.menu.on('item:click', function (menu, item, e) {
-                    me.fireEvent('reviewchanges:view', [menu, item]);
+                    me.fireEvent('reviewchange:view', [menu, item]);
                 });
             }
 
@@ -188,6 +200,13 @@ define([
                         iconCls: 'review-deny'
                     });
 
+                    this.btnCompare = new Common.UI.Button({
+                        cls         : 'btn-toolbar  x-huge icon-top',
+                        caption     : this.txtCompare,
+                        split       : true,
+                        iconCls: 'review-deny'
+                    });
+
                     this.btnTurnOn = new Common.UI.Button({
                         cls: 'btn-toolbar x-huge icon-top',
                         iconCls: 'btn-ic-review',
@@ -348,6 +367,17 @@ define([
                         );
                         me.btnReject.updateHint([me.tipRejectCurrent, me.txtRejectChanges]);
 
+                        me.btnCompare.setMenu(new Common.UI.Menu({
+                            items: [
+                                {caption: me.mniFromFile, value: 'file'},
+                                {caption: me.mniFromUrl, value: 'url'},
+                                {caption: me.mniFromStorage, value: 'storage'},
+                                {caption: '--'},
+                                {caption: me.mniSettings, value: 'settings'}
+                            ]
+                        }));
+                        me.btnCompare.updateHint(me.tipCompare);
+
                         me.btnAccept.setDisabled(config.isReviewOnly);
                         me.btnReject.setDisabled(config.isReviewOnly);
                     }
@@ -400,6 +430,7 @@ define([
                     var separator_sharing = !(me.btnSharing || me.btnCoAuthMode) ? me.$el.find('.separator.sharing') : '.separator.sharing',
                         separator_comments = !(config.canComments && config.canCoAuthoring) ? me.$el.find('.separator.comments') : '.separator.comments',
                         separator_review = !(config.canReview || config.canViewReview) ? me.$el.find('.separator.review') : '.separator.review',
+                        separator_compare = !config.canReview ? me.$el.find('.separator.compare') : '.separator.compare',
                         separator_chat = !me.btnChat ? me.$el.find('.separator.chat') : '.separator.chat',
                         separator_last;
 
@@ -418,6 +449,11 @@ define([
                     else
                         separator_last = separator_review;
 
+                    if (typeof separator_compare == 'object')
+                        separator_compare.hide().prev('.group').hide();
+                    else
+                        separator_last = separator_compare;
+
                     if (typeof separator_chat == 'object')
                         separator_chat.hide().prev('.group').hide();
                     else
@@ -438,6 +474,7 @@ define([
                 if ( this.appConfig.canReview ) {
                     this.btnAccept.render(this.$el.find('#btn-change-accept'));
                     this.btnReject.render(this.$el.find('#btn-change-reject'));
+                    this.btnCompare.render(this.$el.find('#btn-compare'));
                     this.btnTurnOn.render(this.$el.find('#btn-review-on'));
                 }
                 this.btnPrev && this.btnPrev.render(this.$el.find('#btn-change-prev'));
@@ -609,7 +646,13 @@ define([
             txtFinalCap: 'Final',
             txtOriginalCap: 'Original',
             strFastDesc: 'Real-time co-editing. All changes are saved automatically.',
-            strStrictDesc: 'Use the \'Save\' button to sync the changes you and others make.'
+            strStrictDesc: 'Use the \'Save\' button to sync the changes you and others make.',
+            txtCompare: 'Compare',
+            tipCompare: 'Compare current document with another one',
+            mniFromFile: 'Document from File',
+            mniFromUrl: 'Document from URL',
+            mniFromStorage: 'Document from Storage',
+            mniSettings: 'Comparison Settings'
         }
     }()), Common.Views.ReviewChanges || {}));
 
diff --git a/apps/documenteditor/main/app/view/Toolbar.js b/apps/documenteditor/main/app/view/Toolbar.js
index 6a1ee4caa..9a4365729 100644
--- a/apps/documenteditor/main/app/view/Toolbar.js
+++ b/apps/documenteditor/main/app/view/Toolbar.js
@@ -2272,8 +2272,8 @@ define([
             tipBack: 'Back',
             tipInsertShape: 'Insert Autoshape',
             tipInsertEquation: 'Insert Equation',
-            mniImageFromFile: 'Image from file',
-            mniImageFromUrl: 'Image from url',
+            mniImageFromFile: 'Image from File',
+            mniImageFromUrl: 'Image from URL',
             mniCustomTable: 'Insert Custom Table',
             textTitleError: 'Error',
             textInsertPageNumber: 'Insert page number',
diff --git a/apps/documenteditor/main/locale/en.json b/apps/documenteditor/main/locale/en.json
index 135c39df3..e8842a041 100644
--- a/apps/documenteditor/main/locale/en.json
+++ b/apps/documenteditor/main/locale/en.json
@@ -69,6 +69,7 @@
   "Common.Controllers.ReviewChanges.textTabs": "Change tabs",
   "Common.Controllers.ReviewChanges.textUnderline": "Underline",
   "Common.Controllers.ReviewChanges.textWidow": "Widow control",
+  "Common.Controllers.ReviewChanges.textUrl": "Paste a document URL",
   "Common.UI.ComboBorderSize.txtNoBorders": "No borders",
   "Common.UI.ComboBorderSizeEditable.txtNoBorders": "No borders",
   "Common.UI.ComboDataView.emptyComboText": "No styles",
@@ -268,6 +269,12 @@
   "Common.Views.ReviewChanges.txtSpelling": "Spell Checking",
   "Common.Views.ReviewChanges.txtTurnon": "Track Changes",
   "Common.Views.ReviewChanges.txtView": "Display Mode",
+  "Common.Views.ReviewChanges.txtCompare": "Compare",
+  "Common.Views.ReviewChanges.tipCompare": "Compare current document with another one",
+  "Common.Views.ReviewChanges.mniFromFile": "Document from File",
+  "Common.Views.ReviewChanges.mniFromUrl": "Document from URL",
+  "Common.Views.ReviewChanges.mniFromStorage": "Document from Storage",
+  "Common.Views.ReviewChanges.mniSettings": "Comparison Settings",
   "Common.Views.ReviewChangesDialog.textTitle": "Review Changes",
   "Common.Views.ReviewChangesDialog.txtAccept": "Accept",
   "Common.Views.ReviewChangesDialog.txtAcceptAll": "Accept All Changes",