diff --git a/README.md b/README.md
index 68ce041..feaa5bc 100644
--- a/README.md
+++ b/README.md
@@ -58,11 +58,11 @@
 <li>运行 <code>main.py</code> 即可使用</li>
 </ol>
 <h1>🕹 用户脚本</h1>
-<p>如果您的浏览器安装了 <a href="https://www.tampermonkey.net/">Tampermonkey</a> 浏览器扩展程序，可以添加 <a href="https://raw.githubusercontent.com/JoeanAmier/XHS-Downloader/master/static/XHS-Downloader.js">用户脚本</a>，无需下载即可体验！</p>
-<p>使用 XHS-Downloader 用户脚本批量获取作品链接，搭配 XHS-Downloader 程序可以实现批量下载无水印作品文件！</p>
+<p>如果您的浏览器安装了 <a href="https://www.tampermonkey.net/">Tampermonkey</a> 浏览器扩展程序，可以添加 <a href="https://raw.githubusercontent.com/JoeanAmier/XHS-Downloader/master/static/XHS-Downloader.js">用户脚本</a>，无需下载安装即可体验项目功能！</p>
+<p>提示：可以使用 XHS-Downloader 用户脚本批量提取网页上的作品链接，搭配 XHS-Downloader 程序即可实现批量下载无水印作品文件！</p>
 <h2>脚本功能</h2>
 <ul>
-<li>下载无水印作品文件</li>
+<li>下载小红书无水印作品文件</li>
 <li>提取发现页面作品链接</li>
 <li>提取账号发布作品链接</li>
 <li>提取账号收藏作品链接</li>
@@ -229,9 +229,6 @@ async with XHS(work_path=work_path,
 <li>Email: yonglelolu@gmail.com</li>
 </ul>
 <p>
-<b>XHS-Downloader 是我个人独立维护的一个开源项目，鉴于个人精力有限，请理解项目进展可能较为缓慢，我会尽力保持更新和维护，以确保项目的稳定性和功能的不断改进。</b>
-</p>
-<p>
 <b>如果您通过 Email 联系我，我可能无法及时查看并回复信息，我会尽力在七天内回复您的邮件；如果有紧急事项或需要更快的回复，请通过其他方式与我联系，谢谢理解！</b>
 </p>
 <p><b>如果您对抖音 / TikTok 感兴趣，可以了解一下我的另一个开源项目 <a href="https://github.com/JoeanAmier/TikTokDownloader">TikTokDownloader</a></b></p>
diff --git a/source/TUI/app.py b/source/TUI/app.py
index d3d28ff..7aab79e 100644
--- a/source/TUI/app.py
+++ b/source/TUI/app.py
@@ -35,3 +35,6 @@ class XHSDownloader(App):
 
     async def action_settings(self):
         await self.push_screen("setting")
+
+    async def action_back(self):
+        await self.push_screen("index")
diff --git a/source/TUI/setting.py b/source/TUI/setting.py
index ffbc064..40382ac 100644
--- a/source/TUI/setting.py
+++ b/source/TUI/setting.py
@@ -15,9 +15,13 @@ class Setting(Screen):
         "static/css/setting.tcss")
     BINDINGS = [
         Binding(key="q", action="quit", description="退出程序"),
+        Binding(key="b", action="back", description="返回首页"),
     ]
 
     def compose(self) -> ComposeResult:
         yield Header()
-        yield Label("我是设置页")
+        yield Label("我是设置页，敬请期待！")
         yield Footer()
+
+    def on_mount(self) -> None:
+        self.title = "程序设置"
diff --git a/source/application/Downloader.py b/source/application/Downloader.py
index 1771320..b4f2424 100644
--- a/source/application/Downloader.py
+++ b/source/application/Downloader.py
@@ -12,7 +12,11 @@ __all__ = ['Download']
 
 class Download:
     CONTENT_TYPE_MAP = {
-        "quicktime": "mov",
+        "image/png": "png",
+        "image/jpeg": "jpg",
+        "image/webp": "webp",
+        "application/octet-stream": "",
+        "video/quicktime": "mov",
     }
 
     def __init__(self, manager: Manager, ):
@@ -50,7 +54,7 @@ class Download:
         try:
             async with self.session.get(url, proxy=self.proxy) as response:
                 suffix = self.__extract_type(
-                    response.headers.get("Content-Type", "")) or format_
+                    response.headers.get("Content-Type")) or format_
                 temp = self.temp.joinpath(name)
                 file = path.joinpath(name).with_suffix(f".{suffix}")
                 if self.manager.is_exists(file):
@@ -87,5 +91,4 @@ class Download:
 
     @classmethod
     def __extract_type(cls, content: str) -> str:
-        return "" if content == "application/octet-stream" else cls.CONTENT_TYPE_MAP.get(
-            s := content.split("/")[-1], s)
+        return cls.CONTENT_TYPE_MAP.get(content, "")
diff --git a/source/module/__init__.py b/source/module/__init__.py
index 071ba6d..ca53528 100644
--- a/source/module/__init__.py
+++ b/source/module/__init__.py
@@ -24,6 +24,7 @@ from .static import (
 from .tools import (
     retry,
     logging,
+    wait,
 )
 
 __all__ = [
@@ -50,4 +51,5 @@ __all__ = [
     "COOKIE",
     "retry",
     "logging",
+    "wait",
 ]
diff --git a/source/module/tools.py b/source/module/tools.py
index a6658ad..48ea6d3 100644
--- a/source/module/tools.py
+++ b/source/module/tools.py
@@ -1,8 +1,11 @@
+from asyncio import sleep
+from random import randint
+
 from rich.text import Text
 
 from .static import INFO
 
-__all__ = ["retry", "logging"]
+__all__ = ["retry", "logging", "wait"]
 
 
 def retry(function):
@@ -23,3 +26,7 @@ def logging(log, text, style=INFO):
         log.write(string)
     else:
         print(string)
+
+
+async def wait():
+    await sleep(randint(15, 35) * 0.1)