diff --git a/doc/src/compute_xrd.rst b/doc/src/compute_xrd.rst
index 8c2de043ab..18bb4c886f 100644
--- a/doc/src/compute_xrd.rst
+++ b/doc/src/compute_xrd.rst
@@ -73,7 +73,7 @@ reciprocal lattice nodes. The mesh spacing is defined either (a) by the
 entire simulation domain or (b) manually using selected values as shown
 in the 2D diagram below.
 
-.. image:: img/xrd_mesh.jpg
+.. image:: img/xrd_mesh.png
    :scale: 75%
    :align: center
 
diff --git a/doc/src/img/xrd_mesh.jpg b/doc/src/img/xrd_mesh.jpg
deleted file mode 100644
index 677234caab..0000000000
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diff --git a/doc/src/img/xrd_mesh.png b/doc/src/img/xrd_mesh.png
new file mode 100644
index 0000000000..e58c7322a5
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