diff --git a/src/markdown_exec/formatters/base.py b/src/markdown_exec/formatters/base.py
index 03e07a0..ab37b39 100644
--- a/src/markdown_exec/formatters/base.py
+++ b/src/markdown_exec/formatters/base.py
@@ -105,6 +105,9 @@ def base_format(
         logger.warning(log_message)
         return markdown.convert(str(error))
 
+    if not output:
+        return Markup()
+
     if html:
         if source:
             placeholder = str(uuid4())
diff --git a/tests/test_base_formatter.py b/tests/test_base_formatter.py
index ba439cf..521b5d8 100644
--- a/tests/test_base_formatter.py
+++ b/tests/test_base_formatter.py
@@ -58,3 +58,18 @@ def test_render_console_plus_ansi_result(md: Markdown) -> None:
         result="ansi",
     )
     assert "<code>ansi" in markup
+
+
+def test_dont_render_anything_if_output_is_empty(md: Markdown) -> None:
+    """Assert nothing is rendered if output is empty.
+
+    Parameters:
+        md: A Markdown instance (fixture).
+    """
+    markup = base_format(
+        language="bash",
+        run=lambda code, **_: "",
+        code="whatever",
+        md=md,
+    )
+    assert not markup