diff --git a/DrissionPage/_configs/options_manage.py b/DrissionPage/_configs/options_manage.py
index 5f2b3e5..0be5b8f 100644
--- a/DrissionPage/_configs/options_manage.py
+++ b/DrissionPage/_configs/options_manage.py
@@ -26,7 +26,8 @@ class OptionsManager(object):
             self.ini_path = str(path)
 
         if not Path(self.ini_path).exists():
-            raise FileNotFoundError('ini文件不存在。')
+            raise FileNotFoundError('\nini文件不存在。\n如果是打包使用，请查看打包注意事项\nhttps://g1879.gitee.io/drission'
+                                    'pagedocs/advance/packaging/')
         self._conf = RawConfigParser()
         self._conf.read(self.ini_path, encoding='utf-8')
 
diff --git a/DrissionPage/_units/download_manager.py b/DrissionPage/_units/download_manager.py
index 09b8afb..5cd27a8 100644
--- a/DrissionPage/_units/download_manager.py
+++ b/DrissionPage/_units/download_manager.py
@@ -48,13 +48,16 @@ class BrowserDownloadManager(object):
             self._browser.run_cdp('Browser.setDownloadBehavior', downloadPath=str(Path(path).absolute()),
                                   behavior='allowAndName', eventsEnabled=True)
 
-    def set_rename(self, tab_id, rename):
+    def set_rename(self, tab_id, rename=None, suffix=None):
         """设置某个tab的重命名文件名
         :param tab_id: tab id
-        :param rename: 文件名
+        :param rename: 文件名，可不含后缀，会自动使用远程文件后缀
+        :param suffix: 后缀名，显式设置后缀名，不使用远程文件后缀
         :return: None
         """
-        TabDownloadSettings(tab_id).rename = rename
+        ts = TabDownloadSettings(tab_id)
+        ts.rename = rename
+        ts.suffix = suffix
 
     def set_file_exists(self, tab_id, mode):
         """设置某个tab下载文件重名时执行的策略
@@ -135,12 +138,22 @@ class BrowserDownloadManager(object):
 
         settings = TabDownloadSettings(tab_id if tab_id in TabDownloadSettings.TABS else self._page.tab_id)
         if settings.rename:
-            tmp = kwargs['suggestedFilename'].rsplit('.', 1)
-            ext_name = tmp[-1] if len(tmp) > 1 else ''
-            tmp = settings.rename.rsplit('.', 1)
-            ext_rename = tmp[-1] if len(tmp) > 1 else ''
-            name = settings.rename if ext_rename == ext_name else f'{settings.rename}.{ext_name}'
+            if settings.suffix is not None:
+                name = f'{settings.rename}.{settings.suffix}'
+
+            else:
+                tmp = kwargs['suggestedFilename'].rsplit('.', 1)
+                ext_name = tmp[-1] if len(tmp) > 1 else ''
+                tmp = settings.rename.rsplit('.', 1)
+                ext_rename = tmp[-1] if len(tmp) > 1 else ''
+                name = settings.rename if ext_rename == ext_name else f'{settings.rename}.{ext_name}'
+
             settings.rename = None
+            settings.suffix = None
+
+        elif settings.suffix is not None:
+            name = f'{kwargs["suggestedFilename"].rsplit(".", 1)[0]}.{settings.suffix}'
+            settings.suffix = None
 
         else:
             name = kwargs['suggestedFilename']
@@ -210,6 +223,7 @@ class TabDownloadSettings(object):
         self._created = True
         self.tab_id = tab_id
         self.rename = None
+        self.suffix = None
         self.path = ''
         self.when_file_exists = 'rename'
 
diff --git a/DrissionPage/_units/download_manager.pyi b/DrissionPage/_units/download_manager.pyi
index 5153aa6..c77be03 100644
--- a/DrissionPage/_units/download_manager.pyi
+++ b/DrissionPage/_units/download_manager.pyi
@@ -19,7 +19,7 @@ class BrowserDownloadManager(object):
 
     def set_path(self, tab_id: str, path: Union[Path, str]) -> None: ...
 
-    def set_rename(self, tab_id: str, rename: str) -> None: ...
+    def set_rename(self, tab_id: str, rename: str = None, suffix: str = None) -> None: ...
 
     def set_file_exists(self, tab_id: str, mode: Literal['rename', 'skip', 'overwrite']) -> None: ...
 
@@ -47,6 +47,7 @@ class TabDownloadSettings(object):
     tab_id: str = ...
     waiting_flag: Optional[bool, dict] = ...
     rename: Optional[str] = ...
+    suffix: Optional[str] = ...
     path: Optional[str] = ...
     when_file_exists: str = ...
 
diff --git a/DrissionPage/_units/setter.py b/DrissionPage/_units/setter.py
index 841aea3..d8bf2af 100644
--- a/DrissionPage/_units/setter.py
+++ b/DrissionPage/_units/setter.py
@@ -137,12 +137,13 @@ class TabSetter(ChromiumBaseSetter):
         if self._page._DownloadKit:
             self._page._DownloadKit.set.goal_path(path)
 
-    def download_file_name(self, name):
+    def download_file_name(self, name=None, suffix=None):
         """设置下一个被下载文件的名称
-        :param name: 文件名，可不含后缀
+        :param name: 文件名，可不含后缀，会自动使用远程文件后缀
+        :param suffix: 后缀名，显式设置后缀名，不使用远程文件后缀
         :return: None
         """
-        self._page.browser._dl_mgr.set_rename(self._page.tab_id, name)
+        self._page.browser._dl_mgr.set_rename(self._page.tab_id, name, suffix)
 
     def when_download_file_exists(self, mode):
         """设置当存在同名文件时的处理方式
@@ -181,6 +182,11 @@ class ChromiumPageSetter(TabSetter):
             tab_or_id = tab_or_id.tab_id
         self._page.browser.activate_tab(tab_or_id)
 
+    @property
+    def window(self):
+        """返回用于设置浏览器窗口的对象"""
+        return PageWindowSetter(self._page)
+
 
 class SessionPageSetter(object):
     def __init__(self, page):
@@ -558,14 +564,6 @@ class WindowSetter(object):
             y = y if y is not None else info['top']
             self._perform({'left': x - 8, 'top': y})
 
-    def hide(self):
-        """隐藏浏览器窗口，只在Windows系统可用"""
-        show_or_hide_browser(self._page, hide=True)
-
-    def show(self):
-        """显示浏览器窗口，只在Windows系统可用"""
-        show_or_hide_browser(self._page, hide=False)
-
     def _get_info(self):
         """获取窗口位置及大小信息"""
         return self._page.run_cdp('Browser.getWindowForTarget')
@@ -576,3 +574,13 @@ class WindowSetter(object):
         :return: None
         """
         self._page.run_cdp('Browser.setWindowBounds', windowId=self._window_id, bounds=bounds)
+
+
+class PageWindowSetter(WindowSetter):
+    def hide(self):
+        """隐藏浏览器窗口，只在Windows系统可用"""
+        show_or_hide_browser(self._page, hide=True)
+
+    def show(self):
+        """显示浏览器窗口，只在Windows系统可用"""
+        show_or_hide_browser(self._page, hide=False)
diff --git a/DrissionPage/_units/setter.pyi b/DrissionPage/_units/setter.pyi
index e98b7de..e337d3b 100644
--- a/DrissionPage/_units/setter.pyi
+++ b/DrissionPage/_units/setter.pyi
@@ -61,7 +61,7 @@ class TabSetter(ChromiumBaseSetter):
 
     def download_path(self, path: Union[str, Path]) -> None: ...
 
-    def download_file_name(self, name: str) -> None: ...
+    def download_file_name(self, name: str = None, suffix: str = None) -> None: ...
 
     def when_download_file_exists(self, mode: FILE_EXISTS) -> None: ...
 
@@ -71,6 +71,9 @@ class TabSetter(ChromiumBaseSetter):
 class ChromiumPageSetter(TabSetter):
     _page: ChromiumPage = ...
 
+    @property
+    def window(self) -> PageWindowSetter: ...
+
     def main_tab(self, tab_id: str = None) -> None: ...
 
     def tab_to_front(self, tab_or_id: Union[str, ChromiumTab] = None) -> None: ...
@@ -183,7 +186,6 @@ class PageScrollSetter(object):
 
 
 class WindowSetter(object):
-
     def __init__(self, page: ChromiumBase):
         self._page: ChromiumBase = ...
         self._window_id: str = ...
@@ -200,10 +202,14 @@ class WindowSetter(object):
 
     def location(self, x: int = None, y: int = None) -> None: ...
 
-    def hide(self) -> None: ...
-
-    def show(self) -> None: ...
-
     def _get_info(self) -> dict: ...
 
     def _perform(self, bounds: dict) -> None: ...
+
+
+class PageWindowSetter(WindowSetter):
+    _page: ChromiumPage = ...
+
+    def hide(self) -> None: ...
+
+    def show(self) -> None: ...