diff --git a/editor/extensions/ext-connector.js b/editor/extensions/ext-connector.js
index 85d857e5..ed677db1 100644
--- a/editor/extensions/ext-connector.js
+++ b/editor/extensions/ext-connector.js
@@ -83,7 +83,7 @@ svgEditor.addExtension("Connector", function(S) {
 	function showPanel(on) {
 		var conn_rules = $('#connector_rules');
 		if(!conn_rules.length) {
-			conn_rules = $('<style id="connector_rules"><\/style>').appendTo('head');
+			conn_rules = $('<style id="connector_rules"></style>').appendTo('head');
 		} 
 		conn_rules.text(!on?"":"#tool_clone, #tool_topath, #tool_angle, #xy_panel { display: none !important; }");
 		$('#connector_panel').toggle(on);
diff --git a/editor/extensions/ext-foreignobject.js b/editor/extensions/ext-foreignobject.js
index 4aa3b99b..136485a9 100644
--- a/editor/extensions/ext-foreignobject.js
+++ b/editor/extensions/ext-foreignobject.js
@@ -30,7 +30,7 @@ svgEditor.addExtension("foreignObject", function(S) {
 	function showPanel(on) {
 		var fc_rules = $('#fc_rules');
 		if(!fc_rules.length) {
-			fc_rules = $('<style id="fc_rules"><\/style>').appendTo('head');
+			fc_rules = $('<style id="fc_rules"></style>').appendTo('head');
 		}
 		fc_rules.text(!on?"":" #tool_topath { display: none !important; }");
 		$('#foreignObject_panel').toggle(on);
diff --git a/editor/extensions/ext-overview_window.js b/editor/extensions/ext-overview_window.js
index 4ebdbd78..68101583 100644
--- a/editor/extensions/ext-overview_window.js
+++ b/editor/extensions/ext-overview_window.js
@@ -17,13 +17,13 @@ svgEditor.addExtension("overview_window", function() {	'use strict';
 			<div id=\"overview_window_content\" style=\"position:relative; left:12px; top:0px;\">\
 				<div style=\"background-color:#A0A0A0; display:inline-block; overflow:visible;\">\
 					<svg id=\"overviewMiniView\" width=\"150\" height=\"100\" x=\"0\" y=\"0\" viewBox=\"0 0 4800 3600\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\
-						<use x=\"0\" y=\"0\" xlink:href=\"#svgroot\"> <\/use>\
+						<use x=\"0\" y=\"0\" xlink:href=\"#svgroot\"> </use>\
 					 </svg>\
 					 <div id=\"overview_window_view_box\" style=\"min-width:50px; min-height:50px; position:absolute; top:30px; left:30px; z-index:5; background-color:rgba(255,0,102,0.3);\">\
-					 <\/div>\
-				 <\/div>\
-			<\/div>\
-		<\/div>";
+					 </div>\
+				 </div>\
+			</div>\
+		</div>";
 	$("#sidepanels").append(propsWindowHtml);
 
 	//define dynamic animation of the view box.
diff --git a/editor/extensions/ext-polygon.js b/editor/extensions/ext-polygon.js
index 16e1ce77..c8c5cc32 100644
--- a/editor/extensions/ext-polygon.js
+++ b/editor/extensions/ext-polygon.js
@@ -40,7 +40,7 @@ svgEditor.addExtension("polygon", function(S) {'use strict';
     function showPanel(on){
         var fc_rules = $('#fc_rules');
         if (!fc_rules.length) {
-            fc_rules = $('<style id="fc_rules"><\/style>').appendTo('head');
+            fc_rules = $('<style id="fc_rules"></style>').appendTo('head');
         }
         fc_rules.text(!on ? "" : " #tool_topath { display: none !important; }");
         $('#polygon_panel').toggle(on);
diff --git a/editor/extensions/ext-shapes.js b/editor/extensions/ext-shapes.js
index 0353da33..9784ad19 100644
--- a/editor/extensions/ext-shapes.js
+++ b/editor/extensions/ext-shapes.js
@@ -88,7 +88,7 @@ svgEditor.addExtension('shapes', function() {'use strict';
 		var vb = [-off, -off, size + off*2, size + off*2].join(' ');
 		var stroke = fill ? 0: (size/30);
 		var shape_icon = new DOMParser().parseFromString(
-			'<svg xmlns="http://www.w3.org/2000/svg"><svg viewBox="' + vb + '"><path fill="'+(fill?'#333':'none')+'" stroke="#000" stroke-width="' + stroke + '" /><\/svg><\/svg>',
+			'<svg xmlns="http://www.w3.org/2000/svg"><svg viewBox="' + vb + '"><path fill="'+(fill?'#333':'none')+'" stroke="#000" stroke-width="' + stroke + '" /></svg></svg>',
 			'text/xml');
 
 		var width = 24;
diff --git a/editor/extensions/ext-star.js b/editor/extensions/ext-star.js
index 17f53414..e97c09f0 100644
--- a/editor/extensions/ext-star.js
+++ b/editor/extensions/ext-star.js
@@ -27,7 +27,7 @@ svgEditor.addExtension('star', function(S){'use strict';
 	function showPanel(on){
 		var fc_rules = $('#fc_rules');
 		if (!fc_rules.length) {
-			fc_rules = $('<style id="fc_rules"><\/style>').appendTo('head');
+			fc_rules = $('<style id="fc_rules"></style>').appendTo('head');
 		}
 		fc_rules.text(!on ? '' : ' #tool_topath { display: none !important; }');
 		$('#star_panel').toggle(on);
diff --git a/editor/svg-editor.js b/editor/svg-editor.js
index e37632bc..8d103726 100644
--- a/editor/svg-editor.js
+++ b/editor/svg-editor.js
@@ -501,8 +501,6 @@ TODOS
 						}
 						if (src) {
 							if (src.indexOf('data:') === 0) {
-								// plusses get replaced by spaces, so re-insert
-								src = src.replace(/ /g, '+');
 								editor.loadFromDataURI(src);
 							} else {
 								editor.loadFromString(src);
@@ -2348,7 +2346,7 @@ TODOS
 
 				var rule_elem = $('#tool_size_rules');
 				if (!rule_elem.length) {
-					rule_elem = $('<style id="tool_size_rules"><\/style>').appendTo('head');
+					rule_elem = $('<style id="tool_size_rules"></style>').appendTo('head');
 				} else {
 					rule_elem.empty();
 				}
@@ -3591,7 +3589,9 @@ TODOS
 					// Open placeholder window (prevents popup)
 					if (!customHandlers.exportImage) {
 						var str = uiStrings.notification.loadingImage;
-						exportWindow = window.open('data:text/html;charset=utf-8,<title>' + str + '<\/title><h1>' + str + '<\/h1>');
+						exportWindow = window.open(
+                            'data:text/html;charset=utf-8,' + encodeURIComponent('<title>' + str + '</title><h1>' + str + '</h1>')
+                        );
 					}
 					var quality = parseInt($('#image-slider').val(), 10)/100;
 					if (window.canvg) {
@@ -3667,7 +3667,7 @@ TODOS
 				if (supportsNonSS) {return;}
 				var wf_rules = $('#wireframe_rules');
 				if (!wf_rules.length) {
-					wf_rules = $('<style id="wireframe_rules"><\/style>').appendTo('head');
+					wf_rules = $('<style id="wireframe_rules"></style>').appendTo('head');
 				} else {
 					wf_rules.empty();
 				}
@@ -5095,9 +5095,19 @@ TODOS
 
 		editor.loadFromDataURI = function(str) {
 			editor.ready(function() {
-				var pre = 'data:image/svg+xml;base64,';
-				var src = str.substring(pre.length);
-				loadSvgString(Utils.decode64(src));
+                var base64 = false;
+				var pre = str.match(/^data:image\/svg\+xml;base64,/);
+                if (pre) {
+                    base64 = true;
+                }
+                else {
+                    pre = str.match(/^data:image\/svg\+xml(?:;(?:utf8)?)?,/);
+                }
+                if (pre) {
+                    pre = pre[0];
+                }
+				var src = str.slice(pre.length);
+				loadSvgString(base64 ? Utils.decode64(src) : decodeURIComponent(src));
 			});
 		};