diff --git a/vasl_templates/webapp/templates/index.html b/vasl_templates/webapp/templates/index.html
index f55a089..c67b610 100644
--- a/vasl_templates/webapp/templates/index.html
+++ b/vasl_templates/webapp/templates/index.html
@@ -17,8 +17,8 @@
 
 <div id="menu" style="display:none;">
     <input type="button" value="actions">
-    <input id="load-scenario" type="file" style="display:none;">
-    <input id="load-template-pack" type="file" style="display:none;">
+    <input id="load-scenario" type="file" accept=".json" style="display:none;">
+    <input id="load-template-pack" type="file" accept=".zip,.j2" style="display:none;">
     <textarea id="template_pack_persistence" style="display:none;"></textarea>
 </div>