diff --git a/webui/backend/app/api/__pycache__/routes_files.cpython-313.pyc b/webui/backend/app/api/__pycache__/routes_files.cpython-313.pyc
index bf8324c..6953a9a 100644
Binary files a/webui/backend/app/api/__pycache__/routes_files.cpython-313.pyc and b/webui/backend/app/api/__pycache__/routes_files.cpython-313.pyc differ
diff --git a/webui/backend/app/api/__pycache__/schemas.cpython-313.pyc b/webui/backend/app/api/__pycache__/schemas.cpython-313.pyc
index e9dce69..cdd28a3 100644
Binary files a/webui/backend/app/api/__pycache__/schemas.cpython-313.pyc and b/webui/backend/app/api/__pycache__/schemas.cpython-313.pyc differ
diff --git a/webui/backend/app/api/routes_files.py b/webui/backend/app/api/routes_files.py
index 49eab92..f40b28b 100644
--- a/webui/backend/app/api/routes_files.py
+++ b/webui/backend/app/api/routes_files.py
@@ -31,7 +31,7 @@ async def delete(
     request: DeleteRequest,
     service: FileOpsService = Depends(get_file_ops_service),
 ) -> DeleteResponse:
-    return service.delete(path=request.path)
+    return service.delete(path=request.path, recursive=request.recursive)
 
 
 @router.post("/upload", response_model=UploadResponse)
diff --git a/webui/backend/app/api/schemas.py b/webui/backend/app/api/schemas.py
index 52e1ad2..1a7b8a2 100644
--- a/webui/backend/app/api/schemas.py
+++ b/webui/backend/app/api/schemas.py
@@ -52,6 +52,7 @@ class RenameResponse(BaseModel):
 
 class DeleteRequest(BaseModel):
     path: str
+    recursive: bool = False
 
 
 class DeleteResponse(BaseModel):
diff --git a/webui/backend/app/fs/__pycache__/filesystem_adapter.cpython-313.pyc b/webui/backend/app/fs/__pycache__/filesystem_adapter.cpython-313.pyc
index 3e9eebc..05cd24d 100644
Binary files a/webui/backend/app/fs/__pycache__/filesystem_adapter.cpython-313.pyc and b/webui/backend/app/fs/__pycache__/filesystem_adapter.cpython-313.pyc differ
diff --git a/webui/backend/app/fs/filesystem_adapter.py b/webui/backend/app/fs/filesystem_adapter.py
index 96809f4..ab69c90 100644
--- a/webui/backend/app/fs/filesystem_adapter.py
+++ b/webui/backend/app/fs/filesystem_adapter.py
@@ -104,6 +104,9 @@ class FilesystemAdapter:
     def delete_empty_directory(self, path: Path) -> None:
         path.rmdir()
 
+    def delete_directory_recursive(self, path: Path) -> None:
+        shutil.rmtree(path)
+
     def copy_file(self, source: str, destination: str, on_progress: callable | None = None) -> None:
         src = Path(source)
         dst = Path(destination)
diff --git a/webui/backend/app/services/__pycache__/file_ops_service.cpython-313.pyc b/webui/backend/app/services/__pycache__/file_ops_service.cpython-313.pyc
index 3414f7f..4ff0c43 100644
Binary files a/webui/backend/app/services/__pycache__/file_ops_service.cpython-313.pyc and b/webui/backend/app/services/__pycache__/file_ops_service.cpython-313.pyc differ
diff --git a/webui/backend/app/services/file_ops_service.py b/webui/backend/app/services/file_ops_service.py
index 187de64..7aa8637 100644
--- a/webui/backend/app/services/file_ops_service.py
+++ b/webui/backend/app/services/file_ops_service.py
@@ -158,7 +158,7 @@ class FileOpsService:
             self._record_history_error(operation="rename", source=path, destination=new_name, path=path, error=error)
             raise error
 
-    def delete(self, path: str) -> DeleteResponse:
+    def delete(self, path: str, recursive: bool = False) -> DeleteResponse:
         try:
             resolved_target = self._path_guard.resolve_existing_path(path)
 
@@ -166,13 +166,16 @@ class FileOpsService:
                 self._filesystem.delete_file(resolved_target.absolute)
             elif resolved_target.absolute.is_dir():
                 if not self._filesystem.is_directory_empty(resolved_target.absolute):
-                    raise AppError(
-                        code="directory_not_empty",
-                        message="Directory is not empty",
-                        status_code=409,
-                        details={"path": resolved_target.relative},
-                    )
-                self._filesystem.delete_empty_directory(resolved_target.absolute)
+                    if not recursive:
+                        raise AppError(
+                            code="directory_not_empty",
+                            message="Directory is not empty",
+                            status_code=409,
+                            details={"path": resolved_target.relative},
+                        )
+                    self._filesystem.delete_directory_recursive(resolved_target.absolute)
+                else:
+                    self._filesystem.delete_empty_directory(resolved_target.absolute)
             else:
                 raise AppError(
                     code="type_conflict",
diff --git a/webui/backend/data/tasks.db b/webui/backend/data/tasks.db
index f8c1e17..5c03607 100644
Binary files a/webui/backend/data/tasks.db and b/webui/backend/data/tasks.db differ
diff --git a/webui/backend/tests/golden/__pycache__/test_api_file_ops_golden.cpython-313.pyc b/webui/backend/tests/golden/__pycache__/test_api_file_ops_golden.cpython-313.pyc
index 1976108..2bbe150 100644
Binary files a/webui/backend/tests/golden/__pycache__/test_api_file_ops_golden.cpython-313.pyc and b/webui/backend/tests/golden/__pycache__/test_api_file_ops_golden.cpython-313.pyc differ
diff --git a/webui/backend/tests/golden/__pycache__/test_ui_smoke_golden.cpython-313.pyc b/webui/backend/tests/golden/__pycache__/test_ui_smoke_golden.cpython-313.pyc
index ca384f2..adc5126 100644
Binary files a/webui/backend/tests/golden/__pycache__/test_ui_smoke_golden.cpython-313.pyc and b/webui/backend/tests/golden/__pycache__/test_ui_smoke_golden.cpython-313.pyc differ
diff --git a/webui/backend/tests/golden/test_api_file_ops_golden.py b/webui/backend/tests/golden/test_api_file_ops_golden.py
index 6732a5d..f12247c 100644
--- a/webui/backend/tests/golden/test_api_file_ops_golden.py
+++ b/webui/backend/tests/golden/test_api_file_ops_golden.py
@@ -300,6 +300,22 @@ class FileOpsApiGoldenTest(unittest.TestCase):
             },
         )
 
+    def test_delete_non_empty_directory_recursive_success(self) -> None:
+        target = self.scope / "non_empty_recursive"
+        target.mkdir()
+        nested = target / "nested"
+        nested.mkdir()
+        (nested / "a.txt").write_text("a", encoding="utf-8")
+
+        response = self._post(
+            "/api/files/delete",
+            {"path": "storage1/scope/non_empty_recursive", "recursive": True},
+        )
+
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.json(), {"path": "storage1/scope/non_empty_recursive"})
+        self.assertFalse(target.exists())
+
     def test_delete_invalid_path(self) -> None:
         response = self._post(
             "/api/files/delete",
diff --git a/webui/backend/tests/golden/test_ui_smoke_golden.py b/webui/backend/tests/golden/test_ui_smoke_golden.py
index 68480d0..e8ac8de 100644
--- a/webui/backend/tests/golden/test_ui_smoke_golden.py
+++ b/webui/backend/tests/golden/test_ui_smoke_golden.py
@@ -65,6 +65,9 @@ class UiSmokeGoldenTest(unittest.TestCase):
         self.assertIn('id="upload-modal-count"', body)
         self.assertIn('id="upload-modal-status"', body)
         self.assertIn('id="upload-modal-cancel-btn"', body)
+        self.assertIn('id="feedback-modal"', body)
+        self.assertIn('id="feedback-message"', body)
+        self.assertIn('id="feedback-close-btn"', body)
         self.assertIn('id="settings-btn"', body)
         self.assertIn('id="rename-btn"', body)
         self.assertIn('id="view-btn"', body)
@@ -132,6 +135,10 @@ class UiSmokeGoldenTest(unittest.TestCase):
         self.assertIn(">Target path</label>", body)
         self.assertIn('id="batch-move-popup"', body)
         self.assertIn('id="batch-move-apply-btn"', body)
+        self.assertIn('id="delete-confirm-modal"', body)
+        self.assertIn('id="delete-confirm-apply-btn"', body)
+        self.assertIn('id="delete-confirm-cancel-btn"', body)
+        self.assertIn("Delete folder and contents?", body)
         self.assertIn('id="mkdir-btn"', body)
         self.assertIn('id="copy-btn"', body)
         self.assertIn('id="move-btn"', body)
@@ -189,12 +196,18 @@ class UiSmokeGoldenTest(unittest.TestCase):
         self.assertIn("document.documentElement.dataset.theme", app_js)
         self.assertIn('document.getElementById("theme-toggle").onclick = toggleTheme;', app_js)
         self.assertIn('document.getElementById("upload-btn").onclick = openUploadPicker;', app_js)
+        self.assertIn('function feedbackElements()', app_js)
+        self.assertIn('function openFeedbackModal(message)', app_js)
+        self.assertIn('function closeFeedbackModal()', app_js)
         self.assertIn('document.getElementById("upload-menu-toggle").onclick = (event) => {', app_js)
         self.assertIn('document.getElementById("upload-folder-btn").onclick = openFolderPicker;', app_js)
+        self.assertIn('throw createApiError(response, data);', app_js)
         self.assertIn('function closeUploadMenu()', app_js)
         self.assertIn('function toggleUploadMenu()', app_js)
         self.assertNotIn('if (event.altKey) {', app_js)
         self.assertIn('document.getElementById("settings-btn").onclick = () => openSettings("general");', app_js)
+        self.assertIn('err.code === "directory_not_empty"', app_js)
+        self.assertIn('openDeleteConfirmModal(item.path);', app_js)
         self.assertIn('async function loadSettings()', app_js)
         self.assertIn('await loadSettings();', app_js)
         self.assertIn('settings.showThumbnailsInput.onchange = handleShowThumbnailsChange;', app_js)
@@ -225,6 +238,11 @@ class UiSmokeGoldenTest(unittest.TestCase):
         self.assertIn('async function ensureFolderDirectoryExists(path)', app_js)
         self.assertIn('async function executeFolderUploadPlan(plan)', app_js)
         self.assertIn('async function handleFolderSelection(event)', app_js)
+        self.assertIn('function deleteConfirmElements()', app_js)
+        self.assertIn('function openDeleteConfirmModal(path)', app_js)
+        self.assertIn('async function submitDeleteConfirmModal()', app_js)
+        self.assertIn('recursive: true', app_js)
+        self.assertIn('err.code === "directory_not_empty"', app_js)
         self.assertIn('input.setAttribute("webkitdirectory", "")', app_js)
         self.assertIn('await apiRequest("POST", "/api/files/mkdir", {', app_js)
         self.assertIn('await uploadFileRequest(targetPath, entry.file, overwrite);', app_js)
diff --git a/webui/html/app.js b/webui/html/app.js
index 1ff42c8..8007f56 100644
--- a/webui/html/app.js
+++ b/webui/html/app.js
@@ -47,6 +47,9 @@ let renameState = {
   source: null,
   name: "",
 };
+let deleteConfirmState = {
+  path: null,
+};
 let batchMoveState = {
   destinationBase: "",
   count: 0,
@@ -164,6 +167,15 @@ function setStatus(msg) {
 }
 
 function setError(id, msg) {
+  if (id === "actions-error") {
+    document.getElementById(id).textContent = "";
+    if (msg) {
+      openFeedbackModal(msg);
+    } else {
+      closeFeedbackModal();
+    }
+    return;
+  }
   document.getElementById(id).textContent = msg || "";
 }
 
@@ -281,6 +293,24 @@ function batchMoveElements() {
   };
 }
 
+function deleteConfirmElements() {
+  return {
+    overlay: document.getElementById("delete-confirm-modal"),
+    path: document.getElementById("delete-confirm-path"),
+    error: document.getElementById("delete-confirm-error"),
+    applyButton: document.getElementById("delete-confirm-apply-btn"),
+    cancelButton: document.getElementById("delete-confirm-cancel-btn"),
+  };
+}
+
+function feedbackElements() {
+  return {
+    overlay: document.getElementById("feedback-modal"),
+    message: document.getElementById("feedback-message"),
+    closeButton: document.getElementById("feedback-close-btn"),
+  };
+}
+
 function settingsElements() {
   return {
     overlay: document.getElementById("settings-modal"),
@@ -347,6 +377,28 @@ function uploadModalElements() {
   };
 }
 
+function isFeedbackModalOpen() {
+  return !feedbackElements().overlay.classList.contains("hidden");
+}
+
+function openFeedbackModal(message) {
+  const elements = feedbackElements();
+  if (!elements.overlay) {
+    return;
+  }
+  elements.message.textContent = message || "";
+  elements.overlay.classList.remove("hidden");
+}
+
+function closeFeedbackModal() {
+  const elements = feedbackElements();
+  if (!elements.overlay) {
+    return;
+  }
+  elements.message.textContent = "";
+  elements.overlay.classList.add("hidden");
+}
+
 function setUploadModalVisible(visible) {
   const elements = uploadModalElements();
   if (!elements.overlay) {
@@ -486,8 +538,7 @@ async function apiRequest(method, url, body) {
   const response = await fetch(url, options);
   const data = await response.json().catch(() => ({}));
   if (!response.ok) {
-    const error = data.error || {};
-    throw new Error(error.message || `HTTP ${response.status}`);
+    throw createApiError(response, data);
   }
   return data;
 }
@@ -1831,6 +1882,40 @@ async function renameSelected() {
   }
 }
 
+function closeDeleteConfirmModal() {
+  const elements = deleteConfirmElements();
+  deleteConfirmState.path = null;
+  elements.error.textContent = "";
+  elements.overlay.classList.add("hidden");
+}
+
+function openDeleteConfirmModal(path) {
+  const elements = deleteConfirmElements();
+  deleteConfirmState.path = path;
+  elements.path.textContent = path;
+  elements.error.textContent = "";
+  elements.overlay.classList.remove("hidden");
+}
+
+async function submitDeleteConfirmModal() {
+  const path = deleteConfirmState.path;
+  if (!path) {
+    return;
+  }
+  const elements = deleteConfirmElements();
+  elements.error.textContent = "";
+  try {
+    await apiRequest("POST", "/api/files/delete", { path, recursive: true });
+    closeDeleteConfirmModal();
+    setSelectedItem(state.activePane, null);
+    await loadBrowsePane(state.activePane);
+    setStatus("Delete: 1 success, 0 failed");
+    setError("actions-error", "");
+  } catch (err) {
+    elements.error.textContent = err.message;
+  }
+}
+
 async function deleteSelected() {
   const pane = state.activePane;
   const selectedItems = [...paneState(pane).selectedItems];
@@ -1849,6 +1934,16 @@ async function deleteSelected() {
       await apiRequest("POST", "/api/files/delete", { path: item.path });
       successes += 1;
     } catch (err) {
+      if (
+        err.code === "directory_not_empty"
+        && selectedItems.length === 1
+        && item.kind === "directory"
+      ) {
+        failures = 0;
+        firstError = null;
+        openDeleteConfirmModal(item.path);
+        return;
+      }
       failures += 1;
       if (!firstError) {
         firstError = `${item.path}: ${err.message}`;
@@ -2089,6 +2184,10 @@ function isBatchMovePopupOpen() {
   return !batchMoveElements().overlay.classList.contains("hidden");
 }
 
+function isDeleteConfirmModalOpen() {
+  return !deleteConfirmElements().overlay.classList.contains("hidden");
+}
+
 function isUploadConflictModalOpen() {
   return isUploadConflictOpen();
 }
@@ -3150,6 +3249,13 @@ function handleKeyboardShortcuts(event) {
     closeUploadMenu();
     return;
   }
+  if (isFeedbackModalOpen()) {
+    if (event.key === "Escape" || event.key === "Enter") {
+      event.preventDefault();
+      closeFeedbackModal();
+    }
+    return;
+  }
   if (isInfoOpen()) {
     if (event.key === "Escape") {
       event.preventDefault();
@@ -3204,6 +3310,19 @@ function handleKeyboardShortcuts(event) {
     }
     return;
   }
+  if (isDeleteConfirmModalOpen()) {
+    if (event.key === "Escape") {
+      event.preventDefault();
+      closeDeleteConfirmModal();
+      return;
+    }
+    if (event.key === "Enter") {
+      event.preventDefault();
+      submitDeleteConfirmModal();
+      return;
+    }
+    return;
+  }
   if (isUploadConflictModalOpen()) {
     if (event.key === "Escape") {
       event.preventDefault();
@@ -3393,6 +3512,17 @@ function setupEvents() {
   if (modalCancel) {
     modalCancel.onclick = requestUploadCancel;
   }
+  const feedback = feedbackElements();
+  if (feedback.closeButton) {
+    feedback.closeButton.onclick = closeFeedbackModal;
+  }
+  if (feedback.overlay) {
+    feedback.overlay.onclick = (event) => {
+      if (event.target === feedback.overlay) {
+        closeFeedbackModal();
+      }
+    };
+  }
   document.addEventListener("click", (event) => {
     const elements = uploadElements();
     if (!elements.menu || elements.menu.contains(event.target)) {
@@ -3514,6 +3644,15 @@ function setupEvents() {
     }
   };
 
+  const deleteConfirm = deleteConfirmElements();
+  deleteConfirm.cancelButton.onclick = closeDeleteConfirmModal;
+  deleteConfirm.applyButton.onclick = submitDeleteConfirmModal;
+  deleteConfirm.overlay.onclick = (event) => {
+    if (event.target === deleteConfirm.overlay) {
+      closeDeleteConfirmModal();
+    }
+  };
+
   const viewer = viewerElements();
   viewer.closeButton.onclick = closeViewer;
   viewer.overlay.onclick = (event) => {
diff --git a/webui/html/base.css b/webui/html/base.css
index 2448b44..a0c0a37 100644
--- a/webui/html/base.css
+++ b/webui/html/base.css
@@ -656,6 +656,10 @@ button:disabled {
   box-shadow: var(--shadow-elevated);
 }
 
+.feedback-card {
+  width: min(440px, calc(100vw - 24px));
+}
+
 #upload-modal .popup-card {
   max-width: 320px;
   padding: 12px 14px;
diff --git a/webui/html/index.html b/webui/html/index.html
index ae00d78..9b09bca 100644
--- a/webui/html/index.html
+++ b/webui/html/index.html
@@ -108,6 +108,16 @@
     </section>
   </div>
 
+  <div id="feedback-modal" class="popup-overlay hidden" role="dialog" aria-modal="true" aria-labelledby="feedback-title">
+    <div class="popup-card feedback-card">
+      <h3 id="feedback-title">Action feedback</h3>
+      <div id="feedback-message" class="popup-meta"></div>
+      <div class="popup-actions">
+        <button id="feedback-close-btn" type="button">Close</button>
+      </div>
+    </div>
+  </div>
+
   <div id="settings-modal" class="popup-overlay hidden" role="dialog" aria-modal="true" aria-labelledby="settings-title">
     <div class="popup-card settings-card">
       <button id="settings-close-btn" class="viewer-close" type="button" aria-label="Close settings">X</button>
@@ -257,6 +267,19 @@
     </div>
   </div>
 
+  <div id="delete-confirm-modal" class="popup-overlay hidden" role="dialog" aria-modal="true" aria-labelledby="delete-confirm-title">
+    <div class="popup-card">
+      <h3 id="delete-confirm-title">Delete folder and contents?</h3>
+      <div class="popup-meta">This will permanently delete the folder and all files and subfolders inside it.</div>
+      <div id="delete-confirm-path" class="popup-meta"></div>
+      <div id="delete-confirm-error" class="error"></div>
+      <div class="popup-actions">
+        <button id="delete-confirm-apply-btn" type="button">Delete</button>
+        <button id="delete-confirm-cancel-btn" type="button">Cancel</button>
+      </div>
+    </div>
+  </div>
+
   <div id="viewer-modal" class="popup-overlay hidden" role="dialog" aria-modal="true" aria-labelledby="viewer-title">
     <div class="popup-card viewer-card">
       <button id="viewer-close-btn" class="viewer-close" type="button" aria-label="Close viewer">X</button>