diff --git a/.claude/settings.local.json b/.claude/settings.local.json
new file mode 100644
index 0000000..540eac8
--- /dev/null
+++ b/.claude/settings.local.json
@@ -0,0 +1,7 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(go build *)"
+    ]
+  }
+}
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..d297027
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,4 @@
+Copyright (c) 2026 HPL
+
+All rights reserved. This software is proprietary and confidential.
+Unauthorized copying, distribution, or use is prohibited.
diff --git a/dist/hpl-toolbox-0.1.2.exe b/dist/hpl-toolbox-0.1.2.exe
new file mode 100644
index 0000000..dfb28a6
Binary files /dev/null and b/dist/hpl-toolbox-0.1.2.exe differ
diff --git a/dist/hpl-toolbox-0.1.3.vsix b/dist/hpl-toolbox-0.1.3.vsix
new file mode 100644
index 0000000..e34dadc
Binary files /dev/null and b/dist/hpl-toolbox-0.1.3.vsix differ
diff --git a/dist/hpl-toolbox.exe b/dist/hpl-toolbox.exe
index dfb28a6..c2736ec 100644
Binary files a/dist/hpl-toolbox.exe and b/dist/hpl-toolbox.exe differ
diff --git a/package.json b/package.json
index f89f6d8..cd68cac 100644
--- a/package.json
+++ b/package.json
@@ -2,8 +2,13 @@
   "name": "hpl-toolbox",
   "displayName": "HPL Toolbox",
   "description": "Bundled tools: PLEC Upload, AppLovin Demo Upload, Base64 Asset Scanner, Daily Update. Local HTML Host.",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "publisher": "hesukastro",
+  "license": "UNLICENSED",
+  "repository": {
+    "type": "git",
+    "url": "https://gitea.hesukastro.com/hesukastro/vsix-hpl-toolbox.git"
+  },
   "engines": {
     "vscode": "^1.85.0"
   },
diff --git a/src/tools/applovinUpload.ts b/src/tools/applovinUpload.ts
index d6045b2..9f0e447 100644
--- a/src/tools/applovinUpload.ts
+++ b/src/tools/applovinUpload.ts
@@ -34,6 +34,16 @@ export function openApplovinUpload(_context: vscode.ExtensionContext) {
         await handleUpload(panel, msg.paths);
         return;
       }
+
+      if (msg.type === 'saveQr') {
+        await handleSaveQr(panel, msg.url, msg.name);
+        return;
+      }
+
+      if (msg.type === 'saveAllQrs') {
+        await handleSaveAllQrs(panel, msg.items || []);
+        return;
+      }
     } catch (err: any) {
       panel.webview.postMessage({ type: 'error', message: err?.message || String(err) });
     }
@@ -124,6 +134,68 @@ async function handleUpload(panel: vscode.WebviewPanel, filePaths: string[]) {
   panel.webview.postMessage({ type: 'done' });
 }
 
+function qrBaseName(name: string): string {
+  return (name || 'qr').replace(/\.html?$/i, '').replace(/[\\/:*?"<>|]/g, '_') || 'qr';
+}
+
+async function downloadQr(url: string, destPath: string): Promise<void> {
+  const res = await fetch(url);
+  if (!res.ok) throw new Error(`HTTP ${res.status}`);
+  const buf = Buffer.from(await res.arrayBuffer());
+  await fs.promises.writeFile(destPath, buf);
+}
+
+async function handleSaveQr(panel: vscode.WebviewPanel, url: string, name: string) {
+  if (!url) return;
+  const base = qrBaseName(name);
+  const defaultUri = vscode.Uri.file(path.join(require('os').homedir(), 'Downloads', `${base}.png`));
+  const target = await vscode.window.showSaveDialog({
+    defaultUri,
+    filters: { 'PNG Image': ['png'] },
+    saveLabel: 'Save QR',
+  });
+  if (!target) return;
+  try {
+    await downloadQr(url, target.fsPath);
+    panel.webview.postMessage({ type: 'status', message: `Saved QR: ${target.fsPath}` });
+  } catch (err: any) {
+    panel.webview.postMessage({ type: 'error', message: 'Save QR failed: ' + (err?.message || err) });
+  }
+}
+
+async function handleSaveAllQrs(panel: vscode.WebviewPanel, items: Array<{ name: string; url: string }>) {
+  if (!items.length) return;
+  const picked = await vscode.window.showOpenDialog({
+    canSelectFiles: false,
+    canSelectFolders: true,
+    canSelectMany: false,
+    openLabel: 'Save QRs Here',
+  });
+  if (!picked || !picked.length) return;
+  const dir = picked[0].fsPath;
+  let saved = 0;
+  const errors: string[] = [];
+  for (const it of items) {
+    const base = qrBaseName(it.name);
+    let dest = path.join(dir, `${base}.png`);
+    let n = 1;
+    while (fs.existsSync(dest)) {
+      dest = path.join(dir, `${base} (${n++}).png`);
+    }
+    try {
+      await downloadQr(it.url, dest);
+      saved++;
+    } catch (err: any) {
+      errors.push(`${it.name}: ${err?.message || err}`);
+    }
+  }
+  if (errors.length) {
+    panel.webview.postMessage({ type: 'error', message: `Saved ${saved}/${items.length}. Errors:\n` + errors.join('\n') });
+  } else {
+    panel.webview.postMessage({ type: 'status', message: `Saved ${saved} QR${saved === 1 ? '' : 's'} to ${dir}` });
+  }
+}
+
 function getHtml(): string {
   return `<!DOCTYPE html>
 <html>
@@ -163,11 +235,15 @@ function getHtml(): string {
 <p style="opacity:0.8;font-size:12px;margin-top:0;">Upload HTML files to p.applov.in and get QR codes to scan with the AppLovin Playable Preview app (iOS/Android).</p>
 
 <div class="file-cell" style="margin-bottom:8px;">
-  <button id="pick" class="secondary">Choose files...</button>
+  <button id="pick" class="secondary">Add files...</button>
+  <button id="clear" class="secondary" style="display:none;">Clear</button>
   <span class="file-name" id="fileName">(no files)</span>
 </div>
+<div id="fileList" style="margin-bottom:8px;font-size:12px;opacity:0.85;"></div>
 <div class="actions">
   <button id="upload">Upload to AppLovin</button>
+  <button id="saveAll" class="secondary" style="display:none;">Save All QRs...</button>
+  <button id="regenAll" class="secondary" style="display:none;">Regenerate QRs</button>
 </div>
 <div id="status"></div>
 <div id="results"></div>
@@ -175,13 +251,51 @@ function getHtml(): string {
 <script>
   const vscode = acquireVsCodeApi();
   const pickBtn = document.getElementById('pick');
+  const clearBtn = document.getElementById('clear');
   const uploadBtn = document.getElementById('upload');
   const fileNameEl = document.getElementById('fileName');
+  const fileListEl = document.getElementById('fileList');
   const statusEl = document.getElementById('status');
   const resultsEl = document.getElementById('results');
+  const saveAllBtn = document.getElementById('saveAll');
+  const regenAllBtn = document.getElementById('regenAll');
   let selectedPaths = [];
+  let resultItems = [];
+
+  function basename(p) {
+    const i = Math.max(p.lastIndexOf('/'), p.lastIndexOf('\\\\'));
+    return i >= 0 ? p.slice(i + 1) : p;
+  }
+  function renderSelection() {
+    if (!selectedPaths.length) {
+      fileNameEl.textContent = '(no files)';
+      fileListEl.innerHTML = '';
+      clearBtn.style.display = 'none';
+      return;
+    }
+    fileNameEl.textContent = selectedPaths.length + ' file' + (selectedPaths.length === 1 ? '' : 's');
+    fileListEl.innerHTML = selectedPaths.map(p => '<div>' + escapeHtml(basename(p)) + '</div>').join('');
+    clearBtn.style.display = '';
+  }
+
+  saveAllBtn.addEventListener('click', () => {
+    if (!resultItems.length) return;
+    vscode.postMessage({ type: 'saveAllQrs', items: resultItems });
+  });
+
+  regenAllBtn.addEventListener('click', () => {
+    const imgs = resultsEl.querySelectorAll('img[data-qr]');
+    imgs.forEach(img => {
+      const base = img.getAttribute('data-qr');
+      img.src = base + '&_=' + Date.now();
+    });
+  });
 
   pickBtn.addEventListener('click', () => vscode.postMessage({ type: 'pickFiles' }));
+  clearBtn.addEventListener('click', () => {
+    selectedPaths = [];
+    renderSelection();
+  });
 
   uploadBtn.addEventListener('click', () => {
     statusEl.textContent = '';
@@ -191,6 +305,9 @@ function getHtml(): string {
       return;
     }
     uploadBtn.disabled = true;
+    resultItems = [];
+    saveAllBtn.style.display = 'none';
+    regenAllBtn.style.display = 'none';
     vscode.postMessage({ type: 'upload', paths: selectedPaths });
   });
 
@@ -201,13 +318,14 @@ function getHtml(): string {
   window.addEventListener('message', (e) => {
     const m = e.data;
     if (m.type === 'filesSelected') {
-      selectedPaths = m.files.map(f => f.path);
-      const names = m.files.map(f => f.name);
-      fileNameEl.textContent = names.length === 1
-        ? names[0]
-        : names.length + ' files: ' + names.slice(0, 3).join(', ') + (names.length > 3 ? '...' : '');
+      const added = m.files.map(f => f.path).filter(p => !selectedPaths.includes(p));
+      selectedPaths = selectedPaths.concat(added);
+      renderSelection();
     } else if (m.type === 'start') {
       resultsEl.innerHTML = '';
+      resultItems = [];
+      saveAllBtn.style.display = 'none';
+      regenAllBtn.style.display = 'none';
     } else if (m.type === 'status') {
       statusEl.textContent = m.message;
       statusEl.className = '';
@@ -230,27 +348,28 @@ function getHtml(): string {
       wrap.innerHTML =
         '<div style="font-weight:600;margin-bottom:8px;word-break:break-all;">' + escapeHtml(m.name) + '</div>' +
         '<div style="text-align:center;margin-bottom:8px;">' +
-          '<img src="' + m.qrImg + '" alt="QR" style="background:#fff;padding:8px;border-radius:4px;max-width:100%;" />' +
+          '<img src="' + m.qrImg + '" data-qr="' + m.qrImg + '" alt="QR" style="background:#fff;padding:8px;border-radius:4px;max-width:100%;" />' +
         '</div>' +
         '<div style="font-size:11px;opacity:0.8;word-break:break-all;">Hash: ' + escapeHtml(m.hash) + '</div>';
       const actions = document.createElement('div');
       actions.className = 'result-actions';
-      const copyHash = document.createElement('button');
-      copyHash.textContent = 'Copy Hash';
-      copyHash.onclick = () => vscode.postMessage({ type: 'copy', text: m.hash });
-      const copyPreview = document.createElement('button');
-      copyPreview.textContent = 'Copy URL';
-      copyPreview.className = 'secondary';
-      copyPreview.onclick = () => vscode.postMessage({ type: 'copy', text: m.previewUrl });
       const openPreview = document.createElement('button');
       openPreview.textContent = 'Open';
       openPreview.className = 'secondary';
       openPreview.onclick = () => vscode.postMessage({ type: 'open', text: m.previewUrl });
-      actions.appendChild(copyHash);
-      actions.appendChild(copyPreview);
+      const saveQr = document.createElement('button');
+      saveQr.textContent = 'Save QR';
+      saveQr.className = 'secondary';
+      saveQr.onclick = () => vscode.postMessage({ type: 'saveQr', url: m.qrImg, name: m.name });
       actions.appendChild(openPreview);
+      actions.appendChild(saveQr);
       wrap.appendChild(actions);
       resultsEl.appendChild(wrap);
+      resultItems.push({ name: m.name, url: m.qrImg });
+      if (resultItems.length >= 2) {
+        saveAllBtn.style.display = '';
+        regenAllBtn.style.display = '';
+      }
     } else if (m.type === 'done') {
       statusEl.innerHTML = '<span class="ok">Done.</span>';
       uploadBtn.disabled = false;
diff --git a/standalone/applovin.go b/standalone/applovin.go
index c327cc8..74d40b2 100644
--- a/standalone/applovin.go
+++ b/standalone/applovin.go
@@ -11,6 +11,7 @@ import (
 	"os"
 	"path/filepath"
 	"regexp"
+	"strings"
 )
 
 func ApplovinPage(w http.ResponseWriter, r *http.Request) {
@@ -19,11 +20,15 @@ func ApplovinPage(w http.ResponseWriter, r *http.Request) {
 <p class="hint" style="margin-top:0;">Upload HTML files to p.applov.in and get QR codes to scan with the AppLovin Playable Preview app.</p>
 
 <div style="display:flex;align-items:center;gap:8px;margin-bottom:8px;">
-  <button id="pick" class="secondary">Choose files...</button>
+  <button id="pick" class="secondary">Add files...</button>
+  <button id="clear" class="secondary" style="display:none;">Clear</button>
   <span id="fileName" class="hint">(no files)</span>
 </div>
+<div id="fileList" style="margin-bottom:8px;font-size:12px;opacity:0.85;"></div>
 <div style="display:flex;gap:8px;">
   <button id="upload">Upload to AppLovin</button>
+  <button id="saveAll" class="secondary" style="display:none;">Save All QRs...</button>
+  <button id="regenAll" class="secondary" style="display:none;">Regenerate QRs</button>
 </div>
 
 <div id="status" style="margin-top:12px;min-height:20px;"></div>
@@ -36,21 +41,70 @@ func ApplovinPage(w http.ResponseWriter, r *http.Request) {
 
 <script>
 const pickBtn = document.getElementById('pick');
+const clearBtn = document.getElementById('clear');
 const uploadBtn = document.getElementById('upload');
 const fileNameEl = document.getElementById('fileName');
+const fileListEl = document.getElementById('fileList');
 const statusEl = document.getElementById('status');
 const resultsEl = document.getElementById('results');
+const saveAllBtn = document.getElementById('saveAll');
+const regenAllBtn = document.getElementById('regenAll');
 let selectedPaths = [];
+let resultItems = [];
+
+function basename(p) {
+  const i = Math.max(p.lastIndexOf('/'), p.lastIndexOf('\\'));
+  return i >= 0 ? p.slice(i + 1) : p;
+}
+function renderSelection() {
+  if (!selectedPaths.length) {
+    fileNameEl.textContent = '(no files)';
+    fileListEl.innerHTML = '';
+    clearBtn.style.display = 'none';
+    return;
+  }
+  fileNameEl.textContent = selectedPaths.length + ' file' + (selectedPaths.length === 1 ? '' : 's');
+  fileListEl.innerHTML = selectedPaths.map(p => '<div>' + escapeHtml(basename(p)) + '</div>').join('');
+  clearBtn.style.display = '';
+}
+
+saveAllBtn.addEventListener('click', async () => {
+  if (!resultItems.length) return;
+  saveAllBtn.disabled = true;
+  try {
+    const r = await fetch('/api/applovin/saveAllQrs', {
+      method: 'POST',
+      headers: {'Content-Type':'application/json'},
+      body: JSON.stringify({ items: resultItems }),
+    });
+    const j = await r.json();
+    statusEl.innerHTML = j.ok
+      ? '<span class="ok">' + escapeHtml(j.message || 'Saved.') + '</span>'
+      : '<span class="err">' + escapeHtml(j.message || 'Save failed.') + '</span>';
+  } finally {
+    saveAllBtn.disabled = false;
+  }
+});
+
+regenAllBtn.addEventListener('click', () => {
+  resultsEl.querySelectorAll('img[data-qr]').forEach(img => {
+    const base = img.getAttribute('data-qr');
+    img.src = base + '&_=' + Date.now();
+  });
+});
+
+clearBtn.addEventListener('click', () => {
+  selectedPaths = [];
+  renderSelection();
+});
 
 pickBtn.addEventListener('click', async () => {
   const r = await fetch('/api/applovin/pick', { method: 'POST' });
   const j = await r.json();
   if (j.files && j.files.length) {
-    selectedPaths = j.files.map(f => f.path);
-    const names = j.files.map(f => f.name);
-    fileNameEl.textContent = names.length === 1
-      ? names[0]
-      : names.length + ' files: ' + names.slice(0,3).join(', ') + (names.length > 3 ? '...' : '');
+    const added = j.files.map(f => f.path).filter(p => !selectedPaths.includes(p));
+    selectedPaths = selectedPaths.concat(added);
+    renderSelection();
   }
 });
 
@@ -62,6 +116,9 @@ uploadBtn.addEventListener('click', async () => {
     return;
   }
   uploadBtn.disabled = true;
+  resultItems = [];
+  saveAllBtn.style.display = 'none';
+  regenAllBtn.style.display = 'none';
   try {
     const res = await fetch('/api/applovin/upload', {
       method: 'POST',
@@ -113,25 +170,42 @@ function handle(m) {
     wrap.innerHTML =
       '<div style="font-weight:600;margin-bottom:8px;">' + escapeHtml(m.name) + '</div>' +
       '<div style="text-align:center;margin-bottom:8px;">' +
-        '<img src="' + m.qrImg + '" style="background:#fff;padding:8px;border-radius:4px;max-width:100%;" />' +
+        '<img src="' + m.qrImg + '" data-qr="' + m.qrImg + '" style="background:#fff;padding:8px;border-radius:4px;max-width:100%;" />' +
       '</div>' +
       '<div style="font-size:11px;opacity:0.8;">Hash: ' + escapeHtml(m.hash) + '</div>';
     const actions = document.createElement('div');
     actions.className = 'result-actions';
-    const copyHash = document.createElement('button');
-    copyHash.textContent = 'Copy Hash';
-    copyHash.onclick = () => fetch('/api/clipboard', {method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({text:m.hash})});
-    const copyUrl = document.createElement('button');
-    copyUrl.textContent = 'Copy URL';
-    copyUrl.className = 'secondary';
-    copyUrl.onclick = () => fetch('/api/clipboard', {method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({text:m.previewUrl})});
     const openBtn = document.createElement('button');
     openBtn.textContent = 'Open';
     openBtn.className = 'secondary';
     openBtn.onclick = () => fetch('/api/open', {method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({url:m.previewUrl})});
-    actions.appendChild(copyHash); actions.appendChild(copyUrl); actions.appendChild(openBtn);
+    const saveQr = document.createElement('button');
+    saveQr.textContent = 'Save QR';
+    saveQr.className = 'secondary';
+    saveQr.onclick = async () => {
+      saveQr.disabled = true;
+      try {
+        const r = await fetch('/api/applovin/saveQr', {
+          method: 'POST',
+          headers: {'Content-Type':'application/json'},
+          body: JSON.stringify({ name: m.name, url: m.qrImg }),
+        });
+        const j = await r.json();
+        statusEl.innerHTML = j.ok
+          ? '<span class="ok">' + escapeHtml(j.message || 'Saved.') + '</span>'
+          : '<span class="err">' + escapeHtml(j.message || 'Save failed.') + '</span>';
+      } finally {
+        saveQr.disabled = false;
+      }
+    };
+    actions.appendChild(openBtn); actions.appendChild(saveQr);
     wrap.appendChild(actions);
     resultsEl.appendChild(wrap);
+    resultItems.push({ name: m.name, url: m.qrImg });
+    if (resultItems.length >= 2) {
+      saveAllBtn.style.display = '';
+      regenAllBtn.style.display = '';
+    }
   } else if (m.type === 'done') {
     statusEl.innerHTML = '<span class="ok">Done.</span>';
   }
@@ -300,3 +374,114 @@ func ApplovinUpload(w http.ResponseWriter, r *http.Request) {
 	}
 	send(map[string]any{"type": "done"})
 }
+
+func qrBaseName(name string) string {
+	base := name
+	if base == "" {
+		base = "qr"
+	}
+	base = regexp.MustCompile(`(?i)\.html?$`).ReplaceAllString(base, "")
+	base = regexp.MustCompile(`[\\/:*?"<>|]`).ReplaceAllString(base, "_")
+	if base == "" {
+		base = "qr"
+	}
+	return base
+}
+
+func downloadQR(url, destPath string) error {
+	resp, err := http.Get(url)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return fmt.Errorf("HTTP %d", resp.StatusCode)
+	}
+	data, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+	return os.WriteFile(destPath, data, 0644)
+}
+
+func ApplovinSaveQR(w http.ResponseWriter, r *http.Request) {
+	var req struct {
+		Name string `json:"name"`
+		URL  string `json:"url"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		writeJSON(w, map[string]any{"ok": false, "message": err.Error()})
+		return
+	}
+	if req.URL == "" {
+		writeJSON(w, map[string]any{"ok": false, "message": "Missing URL"})
+		return
+	}
+	base := qrBaseName(req.Name)
+	dest := PickSaveFile("Save QR", base+".png", []FileFilter{{Name: "PNG Image", Extensions: []string{"png"}}}, "")
+	if dest == "" {
+		writeJSON(w, map[string]any{"ok": false, "message": "Cancelled"})
+		return
+	}
+	if err := downloadQR(req.URL, dest); err != nil {
+		writeJSON(w, map[string]any{"ok": false, "message": "Save failed: " + err.Error()})
+		return
+	}
+	writeJSON(w, map[string]any{"ok": true, "message": "Saved QR: " + dest})
+}
+
+func ApplovinSaveAllQRs(w http.ResponseWriter, r *http.Request) {
+	var req struct {
+		Items []struct {
+			Name string `json:"name"`
+			URL  string `json:"url"`
+		} `json:"items"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		writeJSON(w, map[string]any{"ok": false, "message": err.Error()})
+		return
+	}
+	if len(req.Items) == 0 {
+		writeJSON(w, map[string]any{"ok": false, "message": "No items"})
+		return
+	}
+	dir := PickFolder("Choose folder to save QRs", "")
+	if dir == "" {
+		writeJSON(w, map[string]any{"ok": false, "message": "Cancelled"})
+		return
+	}
+	saved := 0
+	errs := []string{}
+	for _, it := range req.Items {
+		base := qrBaseName(it.Name)
+		dest := filepath.Join(dir, base+".png")
+		n := 1
+		for fileExists(dest) {
+			dest = filepath.Join(dir, fmt.Sprintf("%s (%d).png", base, n))
+			n++
+		}
+		if err := downloadQR(it.URL, dest); err != nil {
+			errs = append(errs, it.Name+": "+err.Error())
+			continue
+		}
+		saved++
+	}
+	if len(errs) > 0 {
+		writeJSON(w, map[string]any{
+			"ok":      false,
+			"message": fmt.Sprintf("Saved %d/%d. Errors: %s", saved, len(req.Items), strings.Join(errs, "; ")),
+		})
+		return
+	}
+	writeJSON(w, map[string]any{
+		"ok":      true,
+		"message": fmt.Sprintf("Saved %d QR%s to %s", saved, plural(saved), dir),
+	})
+}
+
+func plural(n int) string {
+	if n == 1 {
+		return ""
+	}
+	return "s"
+}
diff --git a/standalone/hpltoolbox.exe b/standalone/hpltoolbox.exe
new file mode 100644
index 0000000..836bf2d
Binary files /dev/null and b/standalone/hpltoolbox.exe differ
diff --git a/standalone/main.go b/standalone/main.go
index e506e15..3810c4d 100644
--- a/standalone/main.go
+++ b/standalone/main.go
@@ -120,6 +120,8 @@ func buildMux() *http.ServeMux {
 	// AppLovin
 	mux.HandleFunc("POST /api/applovin/pick", ApplovinPick)
 	mux.HandleFunc("POST /api/applovin/upload", ApplovinUpload)
+	mux.HandleFunc("POST /api/applovin/saveQr", ApplovinSaveQR)
+	mux.HandleFunc("POST /api/applovin/saveAllQrs", ApplovinSaveAllQRs)
 
 	// Base64
 	mux.HandleFunc("POST /api/base64/pickFolder", Base64PickFolder)
diff --git a/standalone/platform.go b/standalone/platform.go
index e51c6a6..3a75324 100644
--- a/standalone/platform.go
+++ b/standalone/platform.go
@@ -159,6 +159,37 @@ if ($dlg.ShowDialog() -eq [System.Windows.Forms.DialogResult]::OK) {
 	return result
 }
 
+func PickSaveFile(title, defaultName string, filters []FileFilter, initialDir string) string {
+	filterStr := "All files|*.*"
+	if len(filters) > 0 {
+		parts := make([]string, 0, len(filters))
+		for _, f := range filters {
+			exts := make([]string, 0, len(f.Extensions))
+			for _, e := range f.Extensions {
+				exts = append(exts, "*."+e)
+			}
+			parts = append(parts, fmt.Sprintf("%s|%s", f.Name, strings.Join(exts, ";")))
+		}
+		filterStr = strings.Join(parts, "|")
+	}
+	script := fmt.Sprintf(`
+Add-Type -AssemblyName System.Windows.Forms
+$dlg = New-Object System.Windows.Forms.SaveFileDialog
+$dlg.Title = '%s'
+$dlg.Filter = '%s'
+$dlg.FileName = '%s'
+if ('%s'.Length -gt 0) { $dlg.InitialDirectory = '%s' }
+if ($dlg.ShowDialog() -eq [System.Windows.Forms.DialogResult]::OK) {
+  Write-Output $dlg.FileName
+}
+`, psEscape(title), psEscape(filterStr), psEscape(defaultName), psEscape(initialDir), psEscape(initialDir))
+	out, err := exec.Command("powershell", "-NoProfile", "-NonInteractive", "-STA", "-Command", script).Output()
+	if err != nil {
+		return ""
+	}
+	return strings.TrimSpace(string(out))
+}
+
 func PickFolder(title, initialDir string) string {
 	script := fmt.Sprintf(`
 Add-Type -AssemblyName System.Windows.Forms