diff --git a/tiddlywiki5/store/Command Line Sketch.jpg.meta b/tiddlywiki5/store/Command Line Sketch.jpg.meta
index c720b0cbe..93c53f45d 100644
--- a/tiddlywiki5/store/Command Line Sketch.jpg.meta	
+++ b/tiddlywiki5/store/Command Line Sketch.jpg.meta	
@@ -1,3 +1,3 @@
 title: Command Line Sketch.jpg
 modifier: JeremyRuston
-type: image/png
+type: image/jpeg
diff --git a/tiddlywiki5/store/Main Screen Sketch.jpg.meta b/tiddlywiki5/store/Main Screen Sketch.jpg.meta
index 1d9b62953..ae833cb8e 100644
--- a/tiddlywiki5/store/Main Screen Sketch.jpg.meta	
+++ b/tiddlywiki5/store/Main Screen Sketch.jpg.meta	
@@ -1,3 +1,3 @@
 title: Main Screen Sketch.jpg
 modifier: JeremyRuston
-type: image/png
+type: image/jpeg
diff --git a/tiddlywiki5/store/View Switcher Sketch.jpg.meta b/tiddlywiki5/store/View Switcher Sketch.jpg.meta
index bb8a84237..305928b3a 100644
--- a/tiddlywiki5/store/View Switcher Sketch.jpg.meta	
+++ b/tiddlywiki5/store/View Switcher Sketch.jpg.meta	
@@ -1,3 +1,3 @@
 title: View Switcher Sketch.jpg
 modifier: JeremyRuston
-type: image/png
+type: image/jpeg