diff --git a/jso/apis/src/main/java/org/teavm/jso/dom/xml/DOMParser.java b/jso/apis/src/main/java/org/teavm/jso/dom/xml/DOMParser.java
index 8048bbc70..c75bfe3a5 100644
--- a/jso/apis/src/main/java/org/teavm/jso/dom/xml/DOMParser.java
+++ b/jso/apis/src/main/java/org/teavm/jso/dom/xml/DOMParser.java
@@ -27,7 +27,6 @@ public abstract class DOMParser implements JSObject {
 
     @JSBody(script = "return new DOMParser();")
     public static native DOMParser create();
-
     
     /**
      * Parses the given string.
diff --git a/jso/apis/src/main/java/org/teavm/jso/dom/xml/XMLSerializer.java b/jso/apis/src/main/java/org/teavm/jso/dom/xml/XMLSerializer.java
new file mode 100644
index 000000000..2e11b2021
--- /dev/null
+++ b/jso/apis/src/main/java/org/teavm/jso/dom/xml/XMLSerializer.java
@@ -0,0 +1,47 @@
+/*
+ *  Copyright 2020 Falko Bräutigam.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.jso.dom.xml;
+
+import org.teavm.jso.JSBody;
+import org.teavm.jso.JSObject;
+
+/**
+ * The XMLSerializer interface provides the ability to construct an XML string
+ * representing a DOM tree.
+ */
+public abstract class XMLSerializer implements JSObject {
+
+    @JSBody(script = "return new XMLSerializer();")
+    public static native XMLSerializer create();
+    
+    /**
+     * Constructs a string representing the specified DOM tree in XML form.
+     *
+     * @param rootNode The Node to use as the root of the DOM tree or subtree for
+     *        which to construct an XML representation. The root node itself must be
+     *        either a {@link Node} or {@link Attr} object.
+     * @return A DOMString containing the XML representation of the specified DOM
+     *         tree.
+     * @throws TypeError The specified rootNode is not a compatible node type. The
+     *         root node must be either Node or Attr.
+     * @throws InvalidStateError The tree could not be successfully serialized,
+     *         probably due to issues with the content's compatibility with XML
+     *         serialization.
+     * @throws SyntaxError A serialization of HTML was requested but could not
+     *         succeed due to the content not being well-formed.
+     */
+    public abstract String serializeToString(Node rootNode);
+}