diff --git a/examples/vision/matting/modnet/cpp/infer.cc b/examples/vision/matting/modnet/cpp/infer.cc
index aa280eddd..1fef35218 100644
--- a/examples/vision/matting/modnet/cpp/infer.cc
+++ b/examples/vision/matting/modnet/cpp/infer.cc
@@ -35,7 +35,7 @@ void CpuInfer(const std::string& model_file, const std::string& image_file,
   auto vis_im_with_bg =
       fastdeploy::vision::SwapBackground(im, bg, res);
   cv::imwrite("visualized_result.jpg", vis_im_with_bg);
-  cv::imwrite("visualized_result_fg.jpg", vis_im);
+  cv::imwrite("visualized_result_fg.png", vis_im);
   std::cout << "Visualized result save in ./visualized_result_replaced_bg.jpg "
                "and ./visualized_result_fg.jpg"
             << std::endl;
@@ -65,7 +65,7 @@ void GpuInfer(const std::string& model_file, const std::string& image_file,
   auto vis_im_with_bg =
       fastdeploy::vision::SwapBackground(im, bg, res);
   cv::imwrite("visualized_result.jpg", vis_im_with_bg);
-  cv::imwrite("visualized_result_fg.jpg", vis_im);
+  cv::imwrite("visualized_result_fg.png", vis_im);
   std::cout << "Visualized result save in ./visualized_result_replaced_bg.jpg "
                "and ./visualized_result_fg.jpg"
             << std::endl;
@@ -96,7 +96,7 @@ void TrtInfer(const std::string& model_file, const std::string& image_file,
   auto vis_im_with_bg =
       fastdeploy::vision::SwapBackground(im, bg, res);
   cv::imwrite("visualized_result.jpg", vis_im_with_bg);
-  cv::imwrite("visualized_result_fg.jpg", vis_im);
+  cv::imwrite("visualized_result_fg.png", vis_im);
   std::cout << "Visualized result save in ./visualized_result_replaced_bg.jpg "
                "and ./visualized_result_fg.jpg"
             << std::endl;
diff --git a/examples/vision/matting/modnet/python/infer.py b/examples/vision/matting/modnet/python/infer.py
index 37c749010..0be874271 100644
--- a/examples/vision/matting/modnet/python/infer.py
+++ b/examples/vision/matting/modnet/python/infer.py
@@ -57,7 +57,7 @@ print(result)
 # 可视化结果
 vis_im = fd.vision.vis_matting_alpha(im, result)
 vis_im_with_bg = fd.vision.swap_background(im, bg, result)
-cv2.imwrite("visualized_result_fg.jpg", vis_im)
+cv2.imwrite("visualized_result_fg.png", vis_im)
 cv2.imwrite("visualized_result_replaced_bg.jpg", vis_im_with_bg)
 print(
     "Visualized result save in ./visualized_result_replaced_bg.jpg and ./visualized_result_fg.jpg"
diff --git a/examples/vision/matting/rvm/cpp/infer.cc b/examples/vision/matting/rvm/cpp/infer.cc
index 9e2a2aa5d..4ca975216 100755
--- a/examples/vision/matting/rvm/cpp/infer.cc
+++ b/examples/vision/matting/rvm/cpp/infer.cc
@@ -41,7 +41,7 @@ void CpuInfer(const std::string& model_file, const std::string& image_file,
   auto vis_im_with_bg =
       fastdeploy::vision::SwapBackground(im_bak, bg, res);
   cv::imwrite("visualized_result.jpg", vis_im_with_bg);
-  cv::imwrite("visualized_result_fg.jpg", vis_im);
+  cv::imwrite("visualized_result_fg.png", vis_im);
   std::cout << "Visualized result save in ./visualized_result.jpg "
                "and ./visualized_result_fg.jpg"
             << std::endl;
@@ -69,7 +69,7 @@ void GpuInfer(const std::string& model_file, const std::string& image_file,
   auto vis_im_with_bg =
       fastdeploy::vision::SwapBackground(im_bak, bg, res);
   cv::imwrite("visualized_result.jpg", vis_im_with_bg);
-  cv::imwrite("visualized_result_fg.jpg", vis_im);
+  cv::imwrite("visualized_result_fg.png", vis_im);
   std::cout << "Visualized result save in ./visualized_result_replaced_bg.jpg "
                "and ./visualized_result_fg.jpg"
             << std::endl;
@@ -103,7 +103,7 @@ void TrtInfer(const std::string& model_file, const std::string& image_file,
   auto vis_im_with_bg =
       fastdeploy::vision::SwapBackground(im_bak, bg, res);
   cv::imwrite("visualized_result.jpg", vis_im_with_bg);
-  cv::imwrite("visualized_result_fg.jpg", vis_im);
+  cv::imwrite("visualized_result_fg.png", vis_im);
   std::cout << "Visualized result save in ./visualized_result.jpg "
                "and ./visualized_result_fg.jpg"
             << std::endl;
diff --git a/examples/vision/matting/rvm/python/infer.py b/examples/vision/matting/rvm/python/infer.py
index 0e9eb6b21..b2ade3c0b 100755
--- a/examples/vision/matting/rvm/python/infer.py
+++ b/examples/vision/matting/rvm/python/infer.py
@@ -105,7 +105,7 @@ if args.image is not None:
     # 可视化结果
     vis_im = fd.vision.vis_matting(im, result)
     vis_im_with_bg = fd.vision.swap_background(im, bg, result)
-    cv2.imwrite("visualized_result_fg.jpg", vis_im)
+    cv2.imwrite("visualized_result_fg.png", vis_im)
     cv2.imwrite("visualized_result_replaced_bg.jpg", vis_im_with_bg)
     print(
         "Visualized result save in ./visualized_result_replaced_bg.jpg and ./visualized_result_fg.jpg"
diff --git a/examples/vision/segmentation/ppmatting/cpu-gpu/cpp/infer.cc b/examples/vision/segmentation/ppmatting/cpu-gpu/cpp/infer.cc
index 975f0e76b..9f1e69d5e 100644
--- a/examples/vision/segmentation/ppmatting/cpu-gpu/cpp/infer.cc
+++ b/examples/vision/segmentation/ppmatting/cpu-gpu/cpp/infer.cc
@@ -44,7 +44,7 @@ void CpuInfer(const std::string& model_dir, const std::string& image_file,
   auto vis_im = fastdeploy::vision::VisMatting(im, res);
   auto vis_im_with_bg = fastdeploy::vision::SwapBackground(im, bg, res);
   cv::imwrite("visualized_result.jpg", vis_im_with_bg);
-  cv::imwrite("visualized_result_fg.jpg", vis_im);
+  cv::imwrite("visualized_result_fg.png", vis_im);
   std::cout << "Visualized result save in ./visualized_result_replaced_bg.jpg "
                "and ./visualized_result_fg.jpg"
             << std::endl;
@@ -74,7 +74,7 @@ void KunlunXinInfer(const std::string& model_dir, const std::string& image_file,
   auto vis_im = fastdeploy::vision::VisMatting(im, res);
   auto vis_im_with_bg = fastdeploy::vision::SwapBackground(im, bg, res);
   cv::imwrite("visualized_result.jpg", vis_im_with_bg);
-  cv::imwrite("visualized_result_fg.jpg", vis_im);
+  cv::imwrite("visualized_result_fg.png", vis_im);
   std::cout << "Visualized result save in ./visualized_result_replaced_bg.jpg "
                "and ./visualized_result_fg.jpg"
             << std::endl;
@@ -143,7 +143,7 @@ void TrtInfer(const std::string& model_dir, const std::string& image_file,
   auto vis_im = fastdeploy::vision::VisMatting(im, res);
   auto vis_im_with_bg = fastdeploy::vision::SwapBackground(im, bg, res);
   cv::imwrite("visualized_result.jpg", vis_im_with_bg);
-  cv::imwrite("visualized_result_fg.jpg", vis_im);
+  cv::imwrite("visualized_result_fg.png", vis_im);
   std::cout << "Visualized result save in ./visualized_result_replaced_bg.jpg "
                "and ./visualized_result_fg.jpg"
             << std::endl;