diff --git a/docs/_static/gallery/normalization_and_contrast.png b/docs/_static/gallery/normalization_and_contrast.png
new file mode 100644
index 00000000..adc903e0
Binary files /dev/null and b/docs/_static/gallery/normalization_and_contrast.png differ
diff --git a/docs/gallery.md b/docs/gallery.md
index 16d41d2b..2151d39e 100644
--- a/docs/gallery.md
+++ b/docs/gallery.md
@@ -44,6 +44,16 @@ selection for images, and the `datashader` backend for large collections
 of shapes and points.
 :::
 
+:::{grid-item-card} Normalization and contrast
+:link: notebooks/tutorials/normalization_and_contrast
+:link-type: doc
+:img-top: _static/gallery/normalization_and_contrast.png
+
+How `norm=` maps data to colours: fixed contrast limits, clipping,
+logarithmic and percentile scaling with `PercentileNormalize`, and
+per-channel norms for images.
+:::
+
 ::::
 
 ## Examples
diff --git a/docs/notebooks b/docs/notebooks
index 05b0f515..c27989fc 160000
--- a/docs/notebooks
+++ b/docs/notebooks
@@ -1 +1 @@
-Subproject commit 05b0f515192f21c0eb4b00304b7d342035ea9200
+Subproject commit c27989fc68941e289d833a49a1cafb976306da6b