diff --git a/src/cev/_embedding_comparison_widget.py b/src/cev/_embedding_comparison_widget.py
index 18cf17e..eb1518c 100644
--- a/src/cev/_embedding_comparison_widget.py
+++ b/src/cev/_embedding_comparison_widget.py
@@ -22,6 +22,9 @@
 from cev._widget_utils import add_ilocs_trait, parse_label
 from cev.components import MarkerSelectionIndicator, WidthOptimizer
 
+if typing.TYPE_CHECKING:
+    import pandas as pd
+
 
 def _create_titles(
     titles: tuple[str, str]
@@ -46,11 +49,17 @@ def _create_titles(
     return spacer, title_widget
 
 
+def _coerce_to_embedding(embedding: Embedding | pd.DataFrame) -> Embedding:
+    if isinstance(embedding, Embedding):
+        return embedding
+    return Embedding.from_df(embedding)
+
+
 class EmbeddingComparisonWidget(ipywidgets.VBox):
     def __init__(
         self,
-        left_embedding: Embedding,
-        right_embedding: Embedding,
+        left_embedding: Embedding | pd.DataFrame,
+        right_embedding: Embedding | pd.DataFrame,
         row_height: int = 250,
         metric: typing.Literal["confusion", "neigbhorhood", "abundance"] = "confusion",
         inverted_colormap: bool = False,
@@ -61,6 +70,8 @@ def __init__(
         active_markers: list[str] | typing.Literal["all"] = "all",
         **kwargs,
     ):
+        left_embedding = _coerce_to_embedding(left_embedding)
+        right_embedding = _coerce_to_embedding(right_embedding)
         pointwise_correspondence = has_pointwise_correspondence(
             left_embedding, right_embedding
         )