diff --git a/chatlas/_chat.py b/chatlas/_chat.py
index 8dfd109..9989404 100644
--- a/chatlas/_chat.py
+++ b/chatlas/_chat.py
@@ -948,11 +948,11 @@ def export(
         is_html = filename.suffix == ".html"
 
         # Get contents from each turn
-        contents = ""
+        content_arr: list[str] = []
         for turn in turns:
             turn_content = "\n\n".join(
                 [
-                    str(content)
+                    str(content).strip()
                     for content in turn.contents
                     if include == "all" or isinstance(content, ContentText)
                 ]
@@ -963,7 +963,8 @@ def export(
                 turn_content = f"<shiny-{msg_type}-message content='{content_attr}'></shiny-{msg_type}-message>"
             else:
                 turn_content = f"## {turn.role.capitalize()}\n\n{turn_content}"
-            contents += f"{turn_content}\n\n"
+            content_arr.append(turn_content)
+        contents = "\n\n".join(content_arr)
 
         # Shiny chat message components requires container elements
         if is_html:
diff --git a/chatlas/_content.py b/chatlas/_content.py
index 0f2737a..76ea2bd 100644
--- a/chatlas/_content.py
+++ b/chatlas/_content.py
@@ -155,7 +155,7 @@ def __str__(self):
         args_str = self._arguments_str()
         func_call = f"{self.name}({args_str})"
         comment = f"# tool request ({self.id})"
-        return f"\n```python\n{comment}\n{func_call}\n```\n"
+        return f"```python\n{comment}\n{func_call}\n```\n"
 
     def _repr_markdown_(self):
         return self.__str__()
@@ -246,7 +246,7 @@ def __str__(self):
         return json.dumps(self.value, indent=2)
 
     def _repr_markdown_(self):
-        return f"""\n```json\n{self.__str__()}\n```\n"""
+        return f"""```json\n{self.__str__()}\n```"""
 
     def __repr__(self, indent: int = 0):
         return " " * indent + f"<ContentJson value={self.value}>"