diff --git a/src/main/java/io/company/localhost/service/localbordService.java b/src/main/java/io/company/localhost/service/localbordService.java
index 7a36ee2..de07c5d 100644
--- a/src/main/java/io/company/localhost/service/localbordService.java
+++ b/src/main/java/io/company/localhost/service/localbordService.java
@@ -191,14 +191,15 @@ public class localbordService {
 
     private String extractFirstImageUrl(String jsonContent) {
         try {
+            // JSON 유효성 검사
+            if (!isValidJson(jsonContent)) {
+                throw new IllegalArgumentException("Invalid JSON content: " + jsonContent);
+            }
+
             ObjectMapper objectMapper = new ObjectMapper();
             JsonNode rootNode = objectMapper.readTree(jsonContent);
 
-            if (!rootNode.isArray()) {
-                System.err.println("JSON content is not an array");
-                return null;
-            }
-
+            // JSON 배열 순회
             for (JsonNode node : rootNode) {
                 JsonNode insertNode = node.get("insert");
                 if (insertNode != null && insertNode.has("image")) {
@@ -212,6 +213,16 @@ public class localbordService {
         return null; // 이미지가 없는 경우
     }
 
+    private boolean isValidJson(String json) {
+        try {
+            final ObjectMapper objectMapper = new ObjectMapper();
+            objectMapper.readTree(json); // JSON 파싱 시도
+            return true; // JSON이 유효하면 true 반환
+        } catch (Exception e) {
+            return false; // 유효하지 않은 경우 false 반환
+        }
+    }
+
     private String extractPlainTextFromJson(String jsonContent) {
         StringBuilder plainTextBuilder = new StringBuilder();
         try {
@@ -257,20 +268,15 @@ public class localbordService {
                 post.put("dislikeCount", reactions.getOrDefault("dislikeCount", 0));
 
                 Object content = post.get("content");
-                if (content != null) {
-                    String contentString = convertBlobToString(content);
-                    post.put("content", contentString);
+                String contentString = convertBlobToString(content);
+                post.put("content", contentString);
 
-                    // 첫 번째 이미지 URL 및 순수 텍스트 추출
-                    String firstImageUrl = extractFirstImageUrl(contentString);
-                    post.put("firstImageUrl", firstImageUrl);
+                String firstImageUrl = extractFirstImageUrl(contentString);
+                post.put("firstImageUrl", firstImageUrl);
 
-                    String plainContent = extractPlainTextFromJson(contentString);
-                    post.put("plainContent", plainContent);
+                String plainContent = extractPlainTextFromJson(contentString);
+                post.put("plainContent", plainContent);
                 }
-            } else {
-                post.put("commentCount", 0);
-            }
         }
     }