diff --git a/thumbnails/bar-stacked.svg b/thumbnails/bar-stacked.svg
index 05fbeffd3b..be3705ca81 100644
--- a/thumbnails/bar-stacked.svg
+++ b/thumbnails/bar-stacked.svg
@@ -1,24 +1,28 @@
-
-
\ No newline at end of file
+
diff --git a/thumbnails/gauge.svg b/thumbnails/gauge.svg
index e5531a5a3a..6618425598 100644
--- a/thumbnails/gauge.svg
+++ b/thumbnails/gauge.svg
@@ -13,5 +13,6 @@
+
\ No newline at end of file
diff --git a/thumbnails/heat-map.svg b/thumbnails/heat-map.svg
index db0ba4ba9a..28e38e5532 100644
--- a/thumbnails/heat-map.svg
+++ b/thumbnails/heat-map.svg
@@ -1,62 +1,61 @@
-
-
\ No newline at end of file
+
diff --git a/thumbnails/tree-map.svg b/thumbnails/tree-map.svg
index cde9692448..d62c324bc2 100644
--- a/thumbnails/tree-map.svg
+++ b/thumbnails/tree-map.svg
@@ -1,11 +1,10 @@
-
-
\ No newline at end of file
+