diff --git a/plugin/src/main/resources/assets/export.js b/plugin/src/main/resources/assets/export.js
index e49f4fa..941efbe 100644
--- a/plugin/src/main/resources/assets/export.js
+++ b/plugin/src/main/resources/assets/export.js
@@ -1,6 +1,8 @@
 "use strict";
 
 function pluginit(P) {
+
+  // Request query params from the embedding window
   P.requestMsg(
     {
       'action':'get',
@@ -29,4 +31,70 @@
   if (window.dynCall) {
     window.dynCall(P)
   };
+
+  // Set plugin object globally
+  window.Plugin = P;
+
+  // Convert POST formparams to GET queryparams
+  // on submission to be usable in eventsource.
+  // This, for the moment, ignores all other form
+  // fields and has to be expanded if needed.
+  document.getElementById("export").onsubmit = function (e) {
+    const form = e.target;
+    const url = new URL(form.action !== undefined ? form.action : "", location);
+    const query = url.searchParams;
+
+    let field;
+    let inputs = form.querySelectorAll("input:not([type=radio]):not([type=checkbox])");
+    for (let i = 0; i < inputs.length; i++) {
+      field = inputs[i];
+      if (field.name.length != "" && field.value != "") {
+        query.append(field.name, field.value);
+      }
+    };
+
+    // Check radio buttons and checkboxes
+    inputs = form.querySelectorAll("input[type=radio],input[type=checkbox]");
+    for (var i = 0; i < inputs.length; i++) {
+      if (inputs[i].checked) {
+        query.append(inputs[i].name, inputs[i].value)
+      };
+    };
+
+    reqStream(url.href);
+    return false;
+  };
+};
+
+
+// Create an eventsource listener for target
+function reqStream (target) {
+  const sse = new EventSource(target);
+  const prog = document.getElementById('progress');
+  sse.addEventListener('Progress', function (e) {
+    prog.value = e.data;
+    prog.textualData = e.data + "%";
+  });
+  sse.addEventListener('Error', function (e) {
+    prog.style.display = "none";
+    sse.close();
+    window.plugin.log(0, e.data);
+  });
+  sse.addEventListener('Relocate', function (e) {
+    prog.style.display = "none";
+    sse.close();
+    console.log(e.data);
+  });
+  sse.addEventListener('Process', function (e) {
+    prog.style.display = "display";
+    if (e.data == "init") {
+      prog.value = 0;
+      prog.textualData = "0%";
+      P.resize();
+    }
+    else if (e.data == 'done') {
+      prog.value = 100;
+      prog.textualData = "100%";
+    }
+  });
 };
diff --git a/plugin/src/main/resources/assets/templates/export.ftl b/plugin/src/main/resources/assets/templates/export.ftl
index d6cb11a..8bac95a 100644
--- a/plugin/src/main/resources/assets/templates/export.ftl
+++ b/plugin/src/main/resources/assets/templates/export.ftl
@@ -11,7 +11,7 @@
     <div class="banner" data-note="Experimental"></div>
     <h1>Export: <code id="export-query"></code></h1>
     <section>
-      <form id="frmid" class="form-table" action="export" method="POST">
+      <form id="export" class="form-table" action="export" method="POST">
         <fieldset>
           <input type="hidden"  id="q" name="q">
           <input type="hidden" id="ql" name="ql">
@@ -54,6 +54,8 @@
 
           <input type="submit" value="Exportieren">
 
+          <progress id="progress" value="0" max="100" style="display: none;">0%</progress>
+
         </fieldset>
       </form>
     </section>