diff --git a/core/events.js b/core/events.js
index 8b741d8a1..64f5cd596 100644
--- a/core/events.js
+++ b/core/events.js
@@ -220,6 +220,22 @@ Blockly.Events.Abstract = function(block) {
   this.recordUndo = Blockly.Events.recordUndo;
 };
 
+/**
+ * Encode the event as JSON.
+ * @return {!Object} JSON representation.
+ */
+Blockly.Events.Abstract.prototype.toJson = function() {
+  var json = {
+    'type': this.type,
+    'blockId': this.blockId,
+    'workspaceId': this.workspaceId
+  };
+  if (this.group) {
+    json['group'] = this.group;
+  }
+  return json;
+};
+
 /**
  * Does this event record any change of state?
  * @return {boolean} True if something changed.
@@ -246,6 +262,16 @@ goog.inherits(Blockly.Events.Create, Blockly.Events.Abstract);
  */
 Blockly.Events.Create.prototype.type = Blockly.Events.CREATE;
 
+/**
+ * Encode the event as JSON.
+ * @return {!Object} JSON representation.
+ */
+Blockly.Events.Create.prototype.toJson = function() {
+  var json = Blockly.Events.Create.superClass_.toJson.call(this);
+  json['xml'] = Blockly.Xml.domToText(this.xml);
+  return json;
+};
+
 /**
  * Run a creation event.
  * @param {boolean} forward True if run forward, false if run backward (undo).
@@ -332,6 +358,20 @@ goog.inherits(Blockly.Events.Change, Blockly.Events.Abstract);
  */
 Blockly.Events.Change.prototype.type = Blockly.Events.CHANGE;
 
+/**
+ * Encode the event as JSON.
+ * @return {!Object} JSON representation.
+ */
+Blockly.Events.Change.prototype.toJson = function() {
+  var json = Blockly.Events.Change.superClass_.toJson.call(this);
+  json['element'] = this.element;
+  if (this.name) {
+    json['name'] = this.name;
+  }
+  json['newValue'] = this.newValue;
+  return json;
+};
+
 /**
  * Does this event record any change of state?
  * @return {boolean} True if something changed.
@@ -415,6 +455,25 @@ goog.inherits(Blockly.Events.Move, Blockly.Events.Abstract);
  */
 Blockly.Events.Move.prototype.type = Blockly.Events.MOVE;
 
+/**
+ * Encode the event as JSON.
+ * @return {!Object} JSON representation.
+ */
+Blockly.Events.Move.prototype.toJson = function() {
+  var json = Blockly.Events.Move.superClass_.toJson.call(this);
+  if (this.newParentId) {
+    json['newParentId'] = this.newParentId;
+  }
+  if (this.newInputName) {
+    json['newInputName'] = this.newInputName;
+  }
+  if (this.newCoordinate) {
+    json['newCoordinate'] = Math.round(this.newCoordinate.x) + ',' +
+        Math.round(this.newCoordinate.y);
+  }
+  return json;
+};
+
 /**
  * Record the block's new location.  Called after the move.
  */
diff --git a/core/workspace.js b/core/workspace.js
index 7cc7886a4..9a4ab5faa 100644
--- a/core/workspace.js
+++ b/core/workspace.js
@@ -228,7 +228,6 @@ Blockly.Workspace.prototype.undo = function(redo) {
   events = Blockly.Events.filter(events, redo);
   Blockly.Events.recordUndo = false;
   for (var i = 0, event; event = events[i]; i++) {
-    console.log(event);
     event.run(redo);
   }
   Blockly.Events.recordUndo = true;