diff --git a/main.js b/main.js
index 8096e2e..a61e67e 100644
--- a/main.js
+++ b/main.js
@@ -225,9 +225,22 @@ electron.ipcMain.on("file_submit", async (event, args) => {
     }
 })
 
-electron.ipcMain.on("file_download", async() => {
-    await mapFunctions.get("htmlDocumentConverter").convert({inputPath:globalFinalHtmlPath, format: globalArgs.document.outputType, showDialog: true});
-})
+ipcMain.handle("file_download", async () => {
+  try {
+    const format = globalArgs.document.outputType.replace('.', '').toLowerCase();
+
+    return await mapFunctions
+      .get("htmlDocumentConverter")
+      .convert({
+        inputPath: globalFinalHtmlPath,
+        format,
+        showDialog: true
+      });
+  } catch (err) {
+    console.error("Download failed:", err);
+    throw err;
+  }
+});
 
 electron.ipcMain.on("speaker_submit", async() => {
     console.log("\n\n\nJa also hier kam was an \n\n\n");
diff --git a/services/modules/convert/convert.js b/services/modules/convert/convert.js
index 54b30ef..508c24f 100644
--- a/services/modules/convert/convert.js
+++ b/services/modules/convert/convert.js
@@ -89,7 +89,13 @@ const module_exports = {
      * @param {string} [options.outputName] - Optional output filename (without extension)
      * @param {boolean} [options.showDialog] - Show save dialog (default: false in module mode, true in CLI mode)
      */
-    async convert({ inputPath, format = 'pdf', outputName, showDialog = false }) {
+async convert({ inputPath, format = 'pdf', outputName, showDialog = false }) {
+
+    format = format.toLowerCase().replace('.', ''); // <-- FIX
+
+    if (!['pdf', 'docx', 'html', 'txt'].includes(format)) {
+        throw new Error(`Unsupported format: ${format}`);
+    }
         if (!fs.existsSync(inputPath)) {
             throw new Error(`Input file not found: ${inputPath}`);
         }