diff --git a/structuretoolkit/visualize.py b/structuretoolkit/visualize.py
index 4774c4f2b..053e1c43b 100644
--- a/structuretoolkit/visualize.py
+++ b/structuretoolkit/visualize.py
@@ -41,6 +41,7 @@ def plot3d(
     view_plane=np.array([0, 0, 1]),
     distance_from_camera=1.0,
     opacity=1.0,
+    height=None,
 ):
     """
     Plot3d relies on NGLView or plotly to visualize atomic structures. Here, we construct a string in the "protein database"
@@ -82,6 +83,8 @@ def plot3d(
             call. (Default is np.array([0, 0, 1]), which is view normal to the x-y plane.)
         distance_from_camera (float): Distance of the camera from the structure. Higher = farther away.
             (Default is 14, which also seems to be the NGLView default value.)
+        height (int/float/None): height of the plot area in pixel (only
+            available in plotly) Default: 600
 
         Possible NGLView color schemes:
           " ", "picking", "random", "uniform", "atomindex", "residueindex",
@@ -96,6 +99,8 @@ def plot3d(
         * The colour interpretation of some hex codes is weird, e.g. 'green'.
     """
     if mode == "NGLview":
+        if height is not None:
+            warnings.warn("`height` is not implemented in NGLview", SyntaxWarning)
         return _plot3d(
             structure=structure,
             show_cell=show_cell,
@@ -128,8 +133,11 @@ def plot3d(
             view_plane=view_plane,
             distance_from_camera=distance_from_camera,
             opacity=opacity,
+            height=height,
         )
     elif mode == "ase":
+        if height is not None:
+            warnings.warn("`height` is not implemented in ase", SyntaxWarning)
         return _plot3d_ase(
             structure=structure,
             show_cell=show_cell,
@@ -165,6 +173,7 @@ def _plot3d_plotly(
     view_plane=np.array([1, 1, 1]),
     distance_from_camera=1,
     opacity=1,
+    height=None,
 ):
     """
     Make a 3D plot of the atomic structure.
@@ -183,6 +192,7 @@ def _plot3d_plotly(
         distance_from_camera (float): Distance of the camera from the structure. Higher = farther away.
             (Default is 14, which also seems to be the NGLView default value.)
         opacity (float): opacity
+        height (int/float/None): height of the plot area in pixel. Default: 600
 
     Returns:
         (plotly.express): The NGLView widget itself, which can be operated on further or viewed as-is.
@@ -227,6 +237,9 @@ def _plot3d_plotly(
     fig.update_layout(scene_camera=angle)
     fig.update_traces(marker=dict(line=dict(width=0.1, color="DarkSlateGrey")))
     fig.update_scenes(aspectmode="data")
+    if height is None:
+        height = 600
+    fig.update_layout(autosize=True, height=height)
     fig.update_layout(legend={"itemsizing": "constant"})
     return fig