diff --git a/docs/src/css/custom.css b/docs/src/css/custom.css
index 4108207..cd604c3 100644
--- a/docs/src/css/custom.css
+++ b/docs/src/css/custom.css
@@ -24,6 +24,10 @@
   padding: 0 var(--ifm-pre-padding);
 }
 
+img {
+  border-radius: 15px;
+}
+
 /* align image to the right */
 .image-container {
   float: right;
diff --git a/docs/static/img/hdr_comparison.png b/docs/static/img/hdr_comparison.png
index b646f42..3f294fc 100644
Binary files a/docs/static/img/hdr_comparison.png and b/docs/static/img/hdr_comparison.png differ
diff --git a/docs/static/img/sdr_comparison.png b/docs/static/img/sdr_comparison.png
index dcdb9f1..39ffeb6 100644
Binary files a/docs/static/img/sdr_comparison.png and b/docs/static/img/sdr_comparison.png differ