diff --git a/docs/handbook/hopper_ps.png b/docs/handbook/hopper_ps.png
deleted file mode 100644
index fe44e7984..000000000
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diff --git a/docs/handbook/hopper_ps.webp b/docs/handbook/hopper_ps.webp
new file mode 100644
index 000000000..3dd2943d6
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diff --git a/docs/handbook/transformed_hopper.jpg b/docs/handbook/transformed_hopper.jpg
deleted file mode 100644
index 33afe67e6..000000000
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diff --git a/docs/handbook/transformed_hopper.webp b/docs/handbook/transformed_hopper.webp
new file mode 100644
index 000000000..be5e90f96
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diff --git a/docs/handbook/tutorial.rst b/docs/handbook/tutorial.rst
index 4e7477143..d8a1ae9c9 100644
--- a/docs/handbook/tutorial.rst
+++ b/docs/handbook/tutorial.rst
@@ -415,7 +415,7 @@ Applying point transforms
     # multiply each pixel by 20
     out = im.point(lambda i: i * 20)
 
-.. image:: transformed_hopper.jpg
+.. image:: transformed_hopper.webp
     :align: center
 
 Using the above technique, you can quickly apply any simple expression to an
@@ -618,7 +618,7 @@ Drawing PostScript
     ps.end_document()
     ps_file.close()
 
-.. image:: hopper_ps.png
+.. image:: hopper_ps.webp
 
 .. note::