diff --git a/utils/markdown_to_image.py b/utils/markdown_to_image.py
index 02bf75c..072df05 100644
--- a/utils/markdown_to_image.py
+++ b/utils/markdown_to_image.py
@@ -214,9 +214,13 @@ async def html_to_image(html_file, output_image):
             try:
                 page = await browser.new_page()
                 await page.goto(f'file://{os.path.abspath(html_file)}')
-                await page.set_viewport_size({"width": 750, "height": 800})
-                await page.wait_for_timeout(500)
-                await page.screenshot(path=output_image, full_page=True)
+                # 获取页面内容的实际高度
+                content_height = await page.evaluate("document.body.scrollHeight")
+                # 设置视口大小，宽度固定为 750，高度根据内容动态调整（加 50px 缓冲）
+                await page.set_viewport_size({"width": 750, "height": content_height + 50})
+                await page.wait_for_timeout(500)  # 等待渲染
+                await page.screenshot(path=output_image, full_page=False)  # full_page=False 以使用视口大小
+                print(f"图片生成成功，动态高度: {content_height + 50}px")
             except Exception as e:
                 print(f"截图失败: {e}")
             finally: