diff --git a/analyze.js b/analyze.js
index 2eda8f3..6dcb3ce 100644
--- a/analyze.js
+++ b/analyze.js
@@ -14,6 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+/* jshint browser: true */
 /* global document */
 
 var EMPTY_STACK = "	<empty stack>";
@@ -22,7 +23,25 @@ var generatedIdCounter = 1;
 // This method is called from HTML so we need to tell JSHint it's not unused
 function analyzeTextfield() { // jshint ignore: line
     var text = document.getElementById("TEXTAREA").value;
+    analyze(text);
+}
+
+// This method is called from HTML so we need to tell JSHint it's not unused
+function analyzeFile() { // jshint ignore: line
+    var fileNode = document.getElementById("FILE");
+    if(fileNode.files.length > 0) {
+        var file = fileNode.files[0];
+        var fileReader = new FileReader();
+        fileReader.readAsText(file);
+        fileReader.onloadend = function(){
+            var text = fileReader.result;
+            analyze(text);
+        };
+    }
+}
+
 
+function analyze(text) {
     var analyzer = new Analyzer(text);
     setHtml("OUTPUT", analyzer.toHtml());
 
diff --git a/index.html b/index.html
index d88daf0..4c56862 100644
--- a/index.html
+++ b/index.html
@@ -33,6 +33,7 @@ <h1>Online Java Thread Dump Analyzer</h1>
       <br/>
       <input type="submit" value="Analyze" onclick="analyzeTextfield();">
       <input type="submit" value="Clear" onclick="clearTextfield();">
+      <input type="file" value="Analyze file" id="FILE" onchange="analyzeFile();">
     </p>
     <p>This page is client-side only, and no data will leave your
       computer when you click Analyze.</p>