diff --git a/src/viewer.js b/src/viewer.js
index 46108aa0..ae003791 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -180,6 +180,9 @@ normalizeMouseWheel();
 			window.$('#export-text').click(function() {
 				self.exportText()
 			})
+			window.$('#export-km').click(function() {
+				self.exportKm()
+			})
 			window.$('#save-button').click(function() {
 				self.save()
 			})
@@ -349,6 +352,7 @@ normalizeMouseWheel();
 				/* When extension cannot write, hide save checkbox */
 				if (!window.parent.OCA.FilesMindMap._file.supportedWrite) {
 					window.$('#save-div').hide()
+					window.$('#export-km-item').prop('hidden', false)
 				}
 			}, function(msg) {
 				self._loadStatus = false
@@ -416,6 +420,11 @@ normalizeMouseWheel();
 			})
 		},
 
+		exportKm() {
+			const url = 'data:application/km;base64,' + Base64.encode(JSON.stringify(minder.exportJson()))
+			this.download(url, 'km')
+		},
+
 		exportPDF() {
 			const self = this
 			minder.exportData('png').then(function(data) {
diff --git a/templates/viewer.php b/templates/viewer.php
index 0dd52cc4..4615884a 100644
--- a/templates/viewer.php
+++ b/templates/viewer.php
@@ -170,6 +170,9 @@ class="btn btn-default export-caption dropdown-toggle"
             <li>
                 <a id="export-text" href="javascript:void(0)" target="_self"><?php p($l->t('Export to Text')); ?></a>
             </li>
+            <li id="export-km-item" hidden>
+                <a id="export-km" href="javascript:void(0)" target="_self"><?php p($l->t('Export to KityMinder (.km)')); ?></a>
+            </li>
         </ul>
     </div>
 </div>