diff --git a/content.js b/content.js
index 6391d9b..ae5d5d9 100644
--- a/content.js
+++ b/content.js
@@ -128,7 +128,7 @@ async function getApplicants() {
 
 function sanitizeZipPathSegment(value, fallback = "unnamed") {
   const sanitized = String(value ?? "")
-    .replace(/[\/\\:*?"<>| ]/g, "_")
+    .replace(/[\/\\:*?"<>|]/g, "_")
     .trim()
 
   return sanitized === "" ? fallback : sanitized
@@ -287,46 +287,18 @@ function getFflate() {
 }
 
 async function createZipBlob(archiveEntries) {
-  const { Zip, ZipPassThrough } = getFflate()
-
   return new Promise((resolve, reject) => {
-    const chunks = []
-    const zip = new Zip()
-    let settled = false
-
-    zip.ondata = (error, chunk, final) => {
-      if (settled) {
-        return
-      }
-
+    fflate.zip(archiveEntries, { level: 0, consume: true }, (error, data) => {
       if (error != null) {
-        settled = true
         reject(error)
         return
       }
-
-      chunks.push(chunk)
-
-      if (final) {
-        settled = true
-        resolve(new Blob(chunks, { type: "application/zip" }))
-      }
-    }
-
-    try {
-      Object.entries(archiveEntries).forEach(([path, bytes]) => {
-        const file = new ZipPassThrough(path)
-
-        zip.add(file)
-        file.push(bytes, true)
-      })
-
-      zip.end()
-    } catch (error) {
-      settled = true
-      reject(error)
-    }
+      resolve(data)
+    })
   })
+    .then((archiveBytes) => {
+      return new Blob([archiveBytes], { type: "application/zip" })
+    })
 }
 
 function downloadBlob(blob, fileName) {
@@ -378,6 +350,7 @@ function createProgressDialog() {
   const size = document.createElement("p")
   const actions = document.createElement("div")
   const closeButton = document.createElement("button")
+  const downloadButton = document.createElement("button")
   const entries = new Map()
   const progress = new Map()
   const startTime = Date.now()
@@ -406,6 +379,12 @@ function createProgressDialog() {
     size.textContent = `Downloaded size: ${formatMegabytes(totalDownloadedBytes)}`
   }
 
+  downloadButton.type = "button"
+  downloadButton.id = "download-button"
+  downloadButton.textContent = "Download"
+  downloadButton.disabled = true
+  downloadButton.classList.add("ripper-hidden")
+
   closeButton.type = "button"
   closeButton.textContent = "Close"
   closeButton.disabled = true
@@ -420,6 +399,7 @@ function createProgressDialog() {
     }
   })
 
+  actions.append(downloadButton)
   actions.append(closeButton)
   summary.append(elapsed, downloaded, size)
   dialog.append(title, status, list, summary, actions)
@@ -488,6 +468,7 @@ function createProgressDialog() {
 
 // Main export flow: fetch applicant data, download files, then assemble the ZIP.
 function rip(event) {
+  Notification.requestPermission()
   const btn = event.target;
   const progressDialog = createProgressDialog()
   btn.textContent = "working ..."
@@ -549,13 +530,20 @@ function rip(event) {
       archiveEntries["fflate.min.js"] = viewerFflateSource
 
       console.log("Generating zip archive...")
-
-      return createZipBlob(archiveEntries)
+      createZipBlob(archiveEntries)
         .then((zipBlob) => {
           console.log("Zip archive is ready.")
+          if (Notification.permission == "granted") {
+            new Notification("EPAS Ripper", { body: `Zip archive for job offer ${aid} is ready for download` })
+          }
           progressDialog.setStatus("Download ready.")
-          downloadBlob(zipBlob, `procedure_${aid}.zip`)
           btn.textContent = "done"
+          const downloadButton = document.querySelector("#download-button")
+          downloadButton.addEventListener("click", () => {
+            downloadBlob(zipBlob, `procedure_${aid}.zip`)
+          })
+          downloadButton.classList.remove("ripper-hidden")
+          downloadButton.disabled = false
         })
 
     })
diff --git a/manifest.json b/manifest.json
index 54a2906..9424603 100644
--- a/manifest.json
+++ b/manifest.json
@@ -2,7 +2,18 @@
   "manifest_version": 3,
   "name": "KF-EPAS-Ripper",
   "version": "0.1.0",
+  "browser_specific_settings": {
+    "gecko": {
+      "id": "epas-ripper@math.janko.fr",
+      "data_collection_permissions": {
+        "required": [
+          "none"
+        ]
+      }
+    }
+  },
   "description": "Downloads all files from an EPAS application",
+  "permissions": [ "notifications" ],
   "host_permissions": [
     "https://personal.uni-graz.at/*"
   ],
diff --git a/style.css b/style.css
index ab6f1e2..0c1d0a1 100644
--- a/style.css
+++ b/style.css
@@ -57,6 +57,10 @@ button.ripper-btn:disabled {
   max-height: 20rem;
 }
 
+.ripper-hidden {
+  display: none;
+}
+
 .ripper-progress-item {
   display: flex;
   align-items: center;
@@ -121,6 +125,7 @@ button.ripper-btn:disabled {
 }
 
 .ripper-progress-actions > button {
+  margin-left: 0.5rem;
   padding: 0.5rem 0.9rem;
   border: 1px solid #cbd5e1;
   border-radius: 0.5rem;