diff --git a/src/main/java/com/sheepit/client/Client.java b/src/main/java/com/sheepit/client/Client.java
index 32fc9f7..38c4311 100644
--- a/src/main/java/com/sheepit/client/Client.java
+++ b/src/main/java/com/sheepit/client/Client.java
@@ -1164,6 +1164,12 @@ import okhttp3.HttpUrl;
 		frame.delete();
 		ajob.setOutputImagePath(null);
 		
+		if (ajob.getPreviewImagePath() != null) {
+			frame = new File(ajob.getPreviewImagePath());
+			frame.delete();
+			ajob.setPreviewImagePath(null);
+		}
+		
 		return confirmJobReturnCode;
 	}
 	
diff --git a/src/main/java/com/sheepit/client/Job.java b/src/main/java/com/sheepit/client/Job.java
index 9a0cf0c..26becc9 100644
--- a/src/main/java/com/sheepit/client/Job.java
+++ b/src/main/java/com/sheepit/client/Job.java
@@ -40,6 +40,7 @@ import java.text.SimpleDateFormat;
 import java.time.Duration;
 import java.time.Instant;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.List;
@@ -63,6 +64,8 @@ import java.util.regex.Pattern;
 	private String rendererMD5;
 	private String id;
 	private String outputImagePath;
+	
+	private String previewImagePath;
 	private long outputImageSize;
 	private String path; // path inside of the archive
 	private String rendererCommand;
@@ -502,7 +505,7 @@ import java.util.regex.Pattern;
 			}
 			
 			if (files.length != 0) {
-				new File(files[0].getAbsolutePath()).delete();
+				Arrays.stream(files).forEach( file -> new File(file.getAbsolutePath()).delete());
 			}
 			if (isServerBlockJob()) {
 				return Error.Type.RENDERER_KILLED_BY_SERVER;
@@ -547,6 +550,15 @@ import java.util.regex.Pattern;
 			return Error.Type.NOOUTPUTFILE;
 		}
 		else {
+			if (files.length == 2) {
+				Arrays.sort(files);	//in case of an exr we end up with 2 images, the output as an exr and the preview as a jpg, we want to ensure the output comes first
+				String path = files[1].getAbsolutePath();
+				String extension = path.substring(path.lastIndexOf(".") + 1).toLowerCase();
+				if ("jpg".equals(extension)) {
+					setPreviewImagePath(files[1].getAbsolutePath());
+				}
+			}
+			
 			setOutputImagePath(files[0].getAbsolutePath());
 			this.outputImageSize = new File(getOutputImagePath()).length();
 			log.debug(String.format("Job::render pictureFilename: %s, size: %d'", getOutputImagePath(), this.outputImageSize));
diff --git a/src/main/java/com/sheepit/client/Utils.java b/src/main/java/com/sheepit/client/Utils.java
index 1e6f464..6e6e041 100644
--- a/src/main/java/com/sheepit/client/Utils.java
+++ b/src/main/java/com/sheepit/client/Utils.java
@@ -41,11 +41,21 @@ import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.Calendar;
 import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
 import java.util.TimeZone;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 public class Utils {
+	
+	private static Map<String, String> mimeTypes = new HashMap<>();
+	
+	static {
+		mimeTypes.put(".tga", "image/tga");
+		mimeTypes.put(".exr", "image/x-exr");
+	}
+	
 	public static int unzipFileIntoDirectory(String zipFileName_, String destinationDirectory, char[] password, Log log) {
 		try {
 			ZipFile zipFile = new ZipFile(zipFileName_);
@@ -227,12 +237,14 @@ public class Utils {
 			mimeType = URLConnection.guessContentTypeFromName(file);
 		}
 		
-		if (mimeType == null && file.endsWith(".tga")) { // fallback for TGA
-			mimeType = "image/tga";
-		}
-
-		if (mimeType == null && file.endsWith(".exr")) { // fallback for EXR
-			mimeType = "image/x-exr";
+		if (mimeType == null || (mimeType.equals("image/aces") && file.toLowerCase().endsWith(".exr"))) {
+			try {
+				String extension = file.substring(file.lastIndexOf('.'));
+				mimeType = mimeTypes.get(extension);
+			}
+			catch (IndexOutOfBoundsException e) {
+				e.printStackTrace();
+			}
 		}
 
 		return mimeType;
diff --git a/src/main/java/com/sheepit/client/standalone/GuiSwing.java b/src/main/java/com/sheepit/client/standalone/GuiSwing.java
index 1ed86e5..b09d0b3 100644
--- a/src/main/java/com/sheepit/client/standalone/GuiSwing.java
+++ b/src/main/java/com/sheepit/client/standalone/GuiSwing.java
@@ -47,7 +47,6 @@ import javax.swing.border.EmptyBorder;
 import java.awt.AWTException;
 import java.awt.Dimension;
 import java.awt.FontMetrics;
-import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.GridBagLayout;
 import java.awt.Image;
@@ -64,7 +63,6 @@ import java.awt.image.BufferedImage;
 import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
 import java.net.URL;
-import java.util.Objects;
 import java.util.Timer;
 import java.util.TimerTask;
 
diff --git a/src/main/java/com/sheepit/client/standalone/swing/activity/Working.java b/src/main/java/com/sheepit/client/standalone/swing/activity/Working.java
index 67ea0c8..54a1820 100644
--- a/src/main/java/com/sheepit/client/standalone/swing/activity/Working.java
+++ b/src/main/java/com/sheepit/client/standalone/swing/activity/Working.java
@@ -31,6 +31,7 @@ import java.awt.event.WindowEvent;
 import java.awt.image.BufferedImage;
 import java.awt.Image;
 import java.io.File;
+import java.io.IOException;
 import java.text.DecimalFormat;
 import java.util.Date;
 import java.util.Objects;
@@ -416,8 +417,16 @@ public class Working implements Activity {
 					icon = new ImageIcon(getClass().getResource("/frame_power_detection.jpg"));
 				}
 				else {
+					String path = null;
 					try {
-						String path = lastJob.getOutputImagePath();
+						boolean hasPreview = lastJob.getPreviewImagePath() != null;
+						
+						if (hasPreview) {
+							path = lastJob.getPreviewImagePath();
+						}
+						else {
+							path = lastJob.getOutputImagePath();
+						}
 						
 						BufferedImage img = ImageIO.read(new File(path));
 						float width = img.getWidth();
@@ -433,7 +442,7 @@ public class Working implements Activity {
 					}
 					catch (Exception e) {
 						log.error(String.format("Working::showLastRender() Unable to load/preview rendered frame [%s]. Exception %s",
-							lastJob.getOutputImagePath(), e.getMessage()));
+							path, e.getMessage()));
 					}
 				}