diff --git a/src/formatitko/html.py b/src/formatitko/html.py
index 55d54b7..28e408b 100644
--- a/src/formatitko/html.py
+++ b/src/formatitko/html.py
@@ -13,8 +13,13 @@ from .util import inlinify
 from .context import Group
 from .images import ImageProcessor
 
+import warnings
+warnings.warn("The html function has been deprecated, is left only for reference and will be removed in future commits. HTML_generator should be used in its place.", DeprecationWarning)
+
 def html(e: Union[Element, ListContainer], k: KatexClient, i: ImageProcessor, indent_level: int=0, indent_str: str="\t") -> str:
-	
+
+	warnings.warn("The html function has been deprecated, is left only for reference and will be removed in future commits. HTML_generator should be used in its place.", DeprecationWarning)
+
 	# `only` attribute which makes transformed elements appear only in tex
 	# output or html output
 	if hasattr(e, "attributes") and "only" in e.attributes and e.attributes["only"] != "html":