diff --git a/yxt-common/yxt-common-base/src/main/java/com/yxt/common/base/config/component/FileBatchUploadComponent.java b/yxt-common/yxt-common-base/src/main/java/com/yxt/common/base/config/component/FileBatchUploadComponent.java
index 1ae0105..b682867 100644
--- a/yxt-common/yxt-common-base/src/main/java/com/yxt/common/base/config/component/FileBatchUploadComponent.java
+++ b/yxt-common/yxt-common-base/src/main/java/com/yxt/common/base/config/component/FileBatchUploadComponent.java
@@ -101,10 +101,16 @@ public class FileBatchUploadComponent {
                     e.printStackTrace();
                 }*/
                 try {
-                    // 读取图片的宽高，不加载整个图像到内存中
+                    // 动态选择输出格式（根据源文件扩展名）
+                    String outputFormat = suffixName.substring(1); // 去除点(.)，比如 "jpg" -> "jpg"
+                  /*  // 读取图片的宽高，不加载整个图像到内存中
                     BufferedImage thumbnail = Thumbnails.of(file.getInputStream()).size(1, 1).asBufferedImage();
                     width = String.valueOf(thumbnail.getWidth());
-                    height = String.valueOf(thumbnail.getHeight());
+                    height = String.valueOf(thumbnail.getHeight());*/
+                    BufferedImage thumbnail = Thumbnails.of(file.getInputStream())
+                            .size(800, 600)  // 限制最大宽度和高度
+                            .outputFormat(outputFormat)  // 设置输出格式
+                            .asBufferedImage();
                     // 处理宽高信息
                 } catch (IOException e) {
                     e.printStackTrace();