diff --git a/modules/services/serviceGeneration/renderers/rendererImage.py b/modules/services/serviceGeneration/renderers/rendererImage.py
index 7ea450b2..ad83673b 100644
--- a/modules/services/serviceGeneration/renderers/rendererImage.py
+++ b/modules/services/serviceGeneration/renderers/rendererImage.py
@@ -47,15 +47,15 @@ class RendererImage(BaseRenderer):
             if not aiService:
                 raise ValueError("AI service is required for image generation")
             
-            # Validate JSON structure
-            if not isinstance(extractedContent, dict):
-                raise ValueError("Extracted content must be a dictionary")
+            # Validate JSON structure (standardized schema: {metadata: {...}, documents: [{sections: [...]}]})
+            if not self._validateJsonStructure(extractedContent):
+                raise ValueError("Extracted content must follow standardized schema: {metadata: {...}, documents: [{sections: [...]}]}")
             
-            if "sections" not in extractedContent:
-                raise ValueError("Extracted content must contain 'sections' field")
+            # Extract metadata from standardized schema
+            metadata = self._extractMetadata(extractedContent)
             
             # Use title from JSON metadata if available, otherwise use provided title
-            documentTitle = extractedContent.get("metadata", {}).get("title", title)
+            documentTitle = metadata.get("title", title)
             
             # Create AI prompt for image generation
             imagePrompt = await self._createImageGeneratePrompt(extractedContent, documentTitle, userPrompt, aiService)
diff --git a/modules/services/serviceGeneration/renderers/rendererXlsx.py b/modules/services/serviceGeneration/renderers/rendererXlsx.py
index 2ebe11c2..a8cffd56 100644
--- a/modules/services/serviceGeneration/renderers/rendererXlsx.py
+++ b/modules/services/serviceGeneration/renderers/rendererXlsx.py
@@ -210,15 +210,15 @@ class RendererXlsx(BaseRenderer):
             # Get style set: default styles, enhanced with AI if userPrompt provided
             styles = await self._getStyleSet(userPrompt, aiService)
             
-            # Validate JSON structure
-            if not isinstance(jsonContent, dict):
-                raise ValueError("JSON content must be a dictionary")
+            # Validate JSON structure (standardized schema: {metadata: {...}, documents: [{sections: [...]}]})
+            if not self._validateJsonStructure(jsonContent):
+                raise ValueError("JSON content must follow standardized schema: {metadata: {...}, documents: [{sections: [...]}]}")
             
-            if "sections" not in jsonContent:
-                raise ValueError("JSON content must contain 'sections' field")
+            # Extract metadata from standardized schema
+            metadata = self._extractMetadata(jsonContent)
             
             # Use title from JSON metadata if available, otherwise use provided title
-            document_title = jsonContent.get("metadata", {}).get("title", title)
+            document_title = metadata.get("title", title)
             
             # Create workbook
             wb = Workbook()