diff --git a/agents-flex-core/src/main/java/com/agentsflex/core/util/ImageUtil.java b/agents-flex-core/src/main/java/com/agentsflex/core/util/ImageUtil.java
new file mode 100644
index 0000000..226e3cd
--- /dev/null
+++ b/agents-flex-core/src/main/java/com/agentsflex/core/util/ImageUtil.java
@@ -0,0 +1,43 @@
+/*
+ *  Copyright (c) 2023-2025, Agents-Flex (fuhai999@gmail.com).
+ *  <p>
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *  <p>
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  <p>
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package com.agentsflex.core.util;
+
+import com.agentsflex.core.llm.client.HttpClient;
+
+import java.io.File;
+import java.io.InputStream;
+import java.util.Base64;
+
+public class ImageUtil {
+
+    private static final HttpClient imageHttpClient = new HttpClient();
+
+
+    public static String imageUrlToBase64(String imageUrl) {
+        byte[] bytes = imageHttpClient.getBytes(imageUrl);
+        return Base64.getEncoder().encodeToString(bytes);
+    }
+
+    public static String imageFileToBase64(File imageFile) {
+        byte[] bytes = IOUtil.readBytes(imageFile);
+        return Base64.getEncoder().encodeToString(bytes);
+    }
+
+    public static String imageStreamToBase64(InputStream imageStream) {
+        byte[] bytes = IOUtil.readBytes(imageStream);
+        return Base64.getEncoder().encodeToString(bytes);
+    }
+}