diff --git a/src-tauri/capabilities/SubWindow.json b/src-tauri/capabilities/SubWindow.json
index 9e2e6497..b7b7ef70 100644
--- a/src-tauri/capabilities/SubWindow.json
+++ b/src-tauri/capabilities/SubWindow.json
@@ -6,8 +6,11 @@
   "permissions": [
     "app:allow-version",
     "app:default",
+    "dialog:allow-save",
+    "dialog:default",
     "event:allow-listen",
     "event:default",
+    "fs:default",
     "http:allow-fetch",
     "log:allow-log",
     "log:default",
@@ -21,6 +24,34 @@
     "window:allow-set-title",
     "window:allow-set-fullscreen",
     "window:allow-show",
+    {
+      "identifier": "fs:allow-exists",
+      "allow": [{ "path": "**" }]
+    },
+    {
+      "identifier": "fs:allow-mkdir",
+      "allow": [{ "path": "**" }]
+    },
+    {
+      "identifier": "fs:allow-read-dir",
+      "allow": [{ "path": "**" }]
+    },
+    {
+      "identifier": "fs:allow-read-text-file",
+      "allow": [{ "path": "**" }]
+    },
+    {
+      "identifier": "fs:allow-remove",
+      "allow": [{ "path": "**" }]
+    },
+    {
+      "identifier": "fs:allow-write-file",
+      "allow": [{ "path": "**" }]
+    },
+    {
+      "identifier": "fs:allow-write-text-file",
+      "allow": [{ "path": "**" }]
+    },
     {
       "identifier": "http:default",
       "allow": [
diff --git a/src-tauri/gen/schemas/capabilities.json b/src-tauri/gen/schemas/capabilities.json
index 0de94ad1..e16efa5d 100644
--- a/src-tauri/gen/schemas/capabilities.json
+++ b/src-tauri/gen/schemas/capabilities.json
@@ -59,8 +59,11 @@
     "permissions": [
       "app:allow-version",
       "app:default",
+      "dialog:allow-save",
+      "dialog:default",
       "event:allow-listen",
       "event:default",
+      "fs:default",
       "http:allow-fetch",
       "log:allow-log",
       "log:default",
@@ -74,6 +77,13 @@
       "window:allow-set-title",
       "window:allow-set-fullscreen",
       "window:allow-show",
+      { "identifier": "fs:allow-exists", "allow": [{ "path": "**" }] },
+      { "identifier": "fs:allow-mkdir", "allow": [{ "path": "**" }] },
+      { "identifier": "fs:allow-read-dir", "allow": [{ "path": "**" }] },
+      { "identifier": "fs:allow-read-text-file", "allow": [{ "path": "**" }] },
+      { "identifier": "fs:allow-remove", "allow": [{ "path": "**" }] },
+      { "identifier": "fs:allow-write-file", "allow": [{ "path": "**" }] },
+      { "identifier": "fs:allow-write-text-file", "allow": [{ "path": "**" }] },
       {
         "identifier": "http:default",
         "allow": [{ "url": "https://*.miyoushe.com/*" }, { "url": "https://*.mihoyo.com/*" }]
diff --git a/src/utils/TGShare.ts b/src/utils/TGShare.ts
index 988dfbb7..006f18de 100644
--- a/src/utils/TGShare.ts
+++ b/src/utils/TGShare.ts
@@ -33,7 +33,7 @@ export async function saveCanvasImg(
   const res = await save({
     title: "保存图片",
     filters: [{ name: "图片", extensions: [format] }],
-    defaultPath: `${await path.downloadDir()}${path.sep}${filename}.${format}`,
+    defaultPath: `${await path.downloadDir()}${path.sep()}${filename}.${format}`,
   });
   if (res === null) {
     await TGLogger.Info(`[saveCanvasImg][${filename}] 未选择保存路径`);
@@ -63,7 +63,7 @@ export async function saveImgLocal(url: string): Promise<string> {
  * @returns {Promise<Uint8Array>} 图片 buffer
  */
 export async function getImageBuffer(url: string): Promise<Uint8Array> {
-  const res = await TGHttp<Uint8Array>(url, { method: "GET" });
+  const res = await TGHttp<Uint8Array>(url, { method: "GET", isBlob: true });
   return new Uint8Array(res);
 }