diff --git a/src/main/java/io/company/localhost/service/localbordService.java b/src/main/java/io/company/localhost/service/localbordService.java
index 98b00c8..8e0b1a4 100644
--- a/src/main/java/io/company/localhost/service/localbordService.java
+++ b/src/main/java/io/company/localhost/service/localbordService.java
@@ -6,6 +6,7 @@ import java.nio.charset.StandardCharsets;
 import java.util.List;
 import java.util.Map;
 import java.util.UUID;
+import io.company.localhost.utils.BlobUtil;
 
 import org.springframework.stereotype.Service;
 
@@ -196,24 +197,6 @@ public class localbordService {
         return boardMapper.selectCountCommentReactions(boardId);
     }
 
-    private String procBlobToString(Object blob) {
-        try {
-            if (blob instanceof String) {
-                return (String) blob;  // 이미 문자열이면 그대로 반환
-            } else if (blob instanceof java.sql.Blob) {
-                java.sql.Blob sqlBlob = (java.sql.Blob) blob;
-                long blobLength = sqlBlob.length();
-                byte[] blobBytes = sqlBlob.getBytes(1, (int) blobLength);
-                return new String(blobBytes, StandardCharsets.UTF_8);  // SQL BLOB → 바이트 배열 → 문자열 변환
-            } else {
-                throw new UnsupportedOperationException("Unsupported blob type: " + blob.getClass());  // 지원되지 않는 타입이면 예외 발생
-            }
-        } catch (Exception e) {
-            throw new RuntimeException("Failed to convert Blob to String: " + e.getMessage(), e);  // 변환 실패 시 예외 처리
-        }
-    }
-
-
     private String procFirstImageUrl(String jsonContent) {
         try {
             // JSON 유효성 검사
@@ -292,7 +275,7 @@ public class localbordService {
         // Blob 데이터를 문자열로 변환
         Object content = boardDetail.get("content");
         if (content != null) {
-            String contentString = procBlobToString(content); // Blob을 문자열로 변환
+            String contentString = BlobUtil.procBlobToString(content); // Blob을 문자열로 변환
             boardDetail.put("content", contentString); // JSON 변환 가능
         }
     }
@@ -309,7 +292,7 @@ public class localbordService {
                 post.put("dislikeCount", reactions.getOrDefault("dislikeCount", 0));
 
                 Object content = post.get("content");
-                String contentString = procBlobToString(content);
+                String contentString = BlobUtil.procBlobToString(content);
                 post.put("content", contentString);
 
                 String firstImageUrl = procFirstImageUrl(contentString);
diff --git a/src/main/java/io/company/localhost/utils/BlobUtil.java b/src/main/java/io/company/localhost/utils/BlobUtil.java
new file mode 100644
index 0000000..4fea605
--- /dev/null
+++ b/src/main/java/io/company/localhost/utils/BlobUtil.java
@@ -0,0 +1,42 @@
+/************************************************************
+ *
+ * @packageName    : io.company.localhost.utils
+ * @fileName       : BlobUtil.java
+ * @author         : 서지희
+ * @date           : 25.02.25
+ * @description    :
+ *
+ * ===========================================================
+ * DATE            AUTHOR       NOTE
+ * -----------------------------------------------------------
+ * 25.02.25        서지희        최초 생성
+ *
+ *************************************************************/
+package io.company.localhost.utils;
+
+import java.nio.charset.StandardCharsets;
+import java.sql.Blob;
+
+public class BlobUtil {
+	
+	private BlobUtil() {
+        // 객체 생성 방지 (유틸리티 클래스는 인스턴스를 만들 필요가 없음)
+    }
+	
+	public static String procBlobToString(Object blob) {
+        try {
+            if (blob instanceof String) {
+                return (String) blob;  // 이미 문자열이면 그대로 반환
+            } else if (blob instanceof Blob) {
+                Blob sqlBlob = (Blob) blob;
+                long blobLength = sqlBlob.length();
+                byte[] blobBytes = sqlBlob.getBytes(1, (int) blobLength);
+                return new String(blobBytes, StandardCharsets.UTF_8);  // SQL BLOB → 바이트 배열 → 문자열 변환
+            } else {
+                throw new UnsupportedOperationException("Unsupported blob type: " + blob.getClass());  // 지원되지 않는 타입이면 예외 발생
+            }
+        } catch (Exception e) {
+            throw new RuntimeException("Failed to convert Blob to String: " + e.getMessage(), e);  // 변환 실패 시 예외 처리
+        }
+    }
+}