diff --git a/core/resources/datafiles/textures/balsa.jpg b/core/resources/datafiles/textures/balsa.jpg
new file mode 100644
index 000000000..0907a1b05
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diff --git a/core/resources/datafiles/textures/balsa.png b/core/resources/datafiles/textures/balsa.png
deleted file mode 100644
index f48f581fb..000000000
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diff --git a/core/resources/datafiles/textures/cardboard.jpg b/core/resources/datafiles/textures/cardboard.jpg
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index 000000000..f5f0a27bc
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diff --git a/core/resources/datafiles/textures/cardboard.png b/core/resources/datafiles/textures/cardboard.png
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index 0101594de..000000000
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diff --git a/core/resources/datafiles/textures/chute.jpg b/core/resources/datafiles/textures/chute.jpg
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index 000000000..029cd04d6
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diff --git a/core/resources/datafiles/textures/chute.png b/core/resources/datafiles/textures/chute.png
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index c58f4f465..000000000
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diff --git a/core/resources/datafiles/textures/hardboard.jpg b/core/resources/datafiles/textures/hardboard.jpg
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index 000000000..785faaa31
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diff --git a/core/resources/datafiles/textures/hardboard.png b/core/resources/datafiles/textures/hardboard.png
deleted file mode 100644
index a769700d8..000000000
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diff --git a/core/resources/datafiles/textures/motors/estes.jpg b/core/resources/datafiles/textures/motors/estes.jpg
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index 000000000..4b68a44a8
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diff --git a/core/resources/datafiles/textures/motors/estes.png b/core/resources/datafiles/textures/motors/estes.png
deleted file mode 100644
index 9d8efbf24..000000000
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diff --git a/core/resources/datafiles/textures/wadding.png b/core/resources/datafiles/textures/wadding.png
index a80104b0a..626f3dc02 100644
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diff --git a/core/resources/datafiles/textures/wood.jpg b/core/resources/datafiles/textures/wood.jpg
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index 000000000..f47c3676c
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diff --git a/core/resources/datafiles/textures/wood.png b/core/resources/datafiles/textures/wood.png
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index 8e46ce4a4..000000000
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diff --git a/core/src/net/sf/openrocket/appearance/defaults/DefaultAppearance.java b/core/src/net/sf/openrocket/appearance/defaults/DefaultAppearance.java
index acb74b5d9..576580d1c 100644
--- a/core/src/net/sf/openrocket/appearance/defaults/DefaultAppearance.java
+++ b/core/src/net/sf/openrocket/appearance/defaults/DefaultAppearance.java
@@ -47,20 +47,20 @@ public class DefaultAppearance {
 						new ResourceDecalImage(resource), EdgeMode.REPEAT));
 	};
 	
-	private static Appearance BALSA = simple("/datafiles/textures/balsa.png");
-	private static Appearance WOOD = simple("/datafiles/textures/wood.png");
+	private static Appearance BALSA = simple("/datafiles/textures/balsa.jpg");
+	private static Appearance WOOD = simple("/datafiles/textures/wood.jpg");
 	@SuppressWarnings("unused")
-	private static Appearance CARDBOARD = simple("/datafiles/textures/cardboard.png");
-	private static Appearance HARDBOARD = simple("/datafiles/textures/hardboard.png");
+	private static Appearance CARDBOARD = simple("/datafiles/textures/cardboard.jpg");
+	private static Appearance HARDBOARD = simple("/datafiles/textures/hardboard.jpg");
 	private static Appearance WADDING = simple("/datafiles/textures/wadding.png");
-	private static Appearance CHUTE = simple("/datafiles/textures/chute.png");
+	private static Appearance CHUTE = simple("/datafiles/textures/chute.jpg");
 	
 	
 	private static final Appearance ESTES_BT = simpleAlpha(new Color(212, 185, 145), .3f, "/datafiles/textures/spiral-wound-alpha.png");
 	private static final Appearance ESTES_IT = simpleAlpha(new Color(168, 146, 116), .1f, "/datafiles/textures/spiral-wound-alpha.png");
 	private static final Appearance WHITE_BT = simpleAlpha(new Color(240, 240, 240), .3f, "/datafiles/textures/spiral-wound-alpha.png");
 	
-	private static Appearance ESTES_MOTOR = simple("/datafiles/textures/motors/estes.png");
+	private static Appearance ESTES_MOTOR = simple("/datafiles/textures/motors/estes.jpg");
 	private static Appearance AEROTECH_MOTOR = simple("/datafiles/textures/motors/aerotech.png");
 	private static Appearance REUSABLE_MOTOR = simpleAlpha(new Color(195, 60, 50), .6f, "/datafiles/textures/motors/reusable.png");