diff --git a/pom.xml b/pom.xml
index a9de0873..0fc3d693 100644
--- a/pom.xml
+++ b/pom.xml
@@ -105,6 +105,11 @@
       <version>${itext.version}</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>com.itextpdf</groupId>
+      <artifactId>pdfCop</artifactId>
+      <version>1.0.1-SNAPSHOT</version>
+    </dependency>
   </dependencies>
 
   <repositories>
diff --git a/src/main/java/com/itextpdf/rups/view/itext/SyntaxHighlightedStreamPane.java b/src/main/java/com/itextpdf/rups/view/itext/SyntaxHighlightedStreamPane.java
index 460a86cd..25ff2100 100644
--- a/src/main/java/com/itextpdf/rups/view/itext/SyntaxHighlightedStreamPane.java
+++ b/src/main/java/com/itextpdf/rups/view/itext/SyntaxHighlightedStreamPane.java
@@ -49,6 +49,7 @@ This file is part of the iText (R) project.
 import com.itextpdf.kernel.pdf.*;
 import com.itextpdf.kernel.pdf.canvas.parser.util.PdfCanvasParser;
 import com.itextpdf.kernel.pdf.xobject.PdfImageXObject;
+import com.itextpdf.pdfdsl.PdfCop;
 import com.itextpdf.rups.controller.PdfReaderController;
 import com.itextpdf.rups.event.RupsEvent;
 import com.itextpdf.rups.model.LoggerHelper;
@@ -56,6 +57,7 @@ This file is part of the iText (R) project.
 import com.itextpdf.rups.view.contextmenu.ContextMenuMouseListener;
 import com.itextpdf.rups.view.contextmenu.StreamPanelContextMenu;
 import com.itextpdf.rups.view.itext.treenodes.PdfObjectTreeNode;
+import org.antlr.v4.runtime.misc.ParseCancellationException;
 
 import javax.imageio.ImageIO;
 import javax.swing.*;
@@ -123,7 +125,7 @@ public class SyntaxHighlightedStreamPane extends JScrollPane implements Observer
     /**
      * Constructs a SyntaxHighlightedStreamPane.
      *
-     * @param controller the pdf reader controller
+     * @param controller the pdf reader text
      * @param pluginMode the plugin mode
      */
     public SyntaxHighlightedStreamPane(PdfReaderController controller, boolean pluginMode) {
@@ -162,7 +164,7 @@ public void render(PdfObjectTreeNode target) {
         manager.discardAllEdits();
         manager.setLimit(0);
         this.target = target;
-        if (!(target.getPdfObject() instanceof PdfStream)) {
+        if (! ( target.getPdfObject() instanceof PdfStream )) {
             clearPane();
             return;
         }
@@ -172,7 +174,7 @@ public void render(PdfObjectTreeNode target) {
         if (PdfName.Image.equals(stream.getAsName(PdfName.Subtype))) {
             try {
                 //Convert byte array back to Image
-                if (!stream.get(PdfName.Width, false).isNumber() && !stream.get(PdfName.Height, false).isNumber())
+                if (! stream.get(PdfName.Width, false).isNumber() && ! stream.get(PdfName.Height, false).isNumber())
                     return;
                 PdfImageXObject pimg = new PdfImageXObject(stream);
                 BufferedImage img = pimg.getBufferedImage();
@@ -194,6 +196,7 @@ public void actionPerformed(ActionEvent event) {
                                 try {
                                     FileDialog fileDialog = new FileDialog(new Frame(), "Save", FileDialog.SAVE);
                                     fileDialog.setFilenameFilter(new FilenameFilter() {
+
                                         public boolean accept(File dir, String name) {
                                             return name.endsWith(".jpg");
                                         }
@@ -227,6 +230,7 @@ public boolean accept(File dir, String name) {
                 setTextEditableRoutine(false);
             }
         } else if (stream.get(PdfName.Length1) == null) {
+            text.registerKeyboardAction(new SaveAction(text, this.target), KeyStroke.getKeyStroke(KeyEvent.VK_S, InputEvent.CTRL_MASK), JComponent.WHEN_FOCUSED);
             setTextEditableRoutine(true);
             String newline = "\n";
             byte[] bb = null;
@@ -239,7 +243,7 @@ public boolean accept(File dir, String name) {
                 ArrayList<PdfObject> tokens = new ArrayList<>();
                 while (ps.parse(tokens).size() > 0) {
                     // operator is at the end
-                    String operator = (tokens.get(tokens.size() - 1)).toString();
+                    String operator = ( tokens.get(tokens.size() - 1) ).toString();
                     // operands are in front of their operator
                     StringBuilder operandssb = new StringBuilder();
                     for (int i = 0; i < tokens.size() - 1; i++) {
@@ -272,10 +276,10 @@ public boolean accept(File dir, String name) {
     public void saveToTarget() {
         manager.discardAllEdits();
         manager.setLimit(0);
-        if (controller != null && ((PdfDictionary) target.getPdfObject()).containsKey(PdfName.Filter)) {
+        if (controller != null && ( (PdfDictionary) target.getPdfObject() ).containsKey(PdfName.Filter)) {
             controller.deleteTreeNodeDictChild(target, PdfName.Filter);
         }
-        ((PdfStream) target.getPdfObject()).setData(text.getText().getBytes());
+        ( (PdfStream) target.getPdfObject() ).setData(text.getText().getBytes());
         if (controller != null) {
             controller.selectNode(target);
         }
@@ -291,7 +295,7 @@ protected void append(StringBuilder sb, PdfObject obj) {
                     byte[] b = str.getValueBytes();
                     String hex;
                     for (byte aB : b) {
-                        hex = Integer.toHexString((aB & 0xFF));
+                        hex = Integer.toHexString(( aB & 0xFF ));
                         if (hex.length() % 2 == 1)
                             sb.append("0");
                         sb.append(hex);
@@ -435,7 +439,7 @@ protected void initAttributes() {
 
     private void setTextEditableRoutine(boolean editable) {
         text.setEditable(editable);
-        if ((pdfStreamGetInputStreamMethod != null) && editable && (target != null) && (target.getPdfObject() instanceof PdfStream)) {
+        if (( pdfStreamGetInputStreamMethod != null ) && editable && ( target != null ) && ( target.getPdfObject() instanceof PdfStream )) {
             try {
                 popupMenu.setSaveToStreamEnabled(pdfStreamGetInputStreamMethod.invoke(target.getPdfObject()) == null);
                 return;
@@ -457,7 +461,7 @@ private void clearPane() {
     /**
      * a serial version id.
      */
-    private static final long serialVersionUID = -3699893393067753664L;
+    private static final long serialVersionUID = - 3699893393067753664L;
 
 }
 
@@ -492,6 +496,7 @@ public void append(String s, Map<Object, Object> attr) {
 }
 
 class UndoAction extends AbstractAction {
+
     private UndoManager manager;
 
     public UndoAction(UndoManager manager) {
@@ -508,6 +513,7 @@ public void actionPerformed(ActionEvent evt) {
 }
 
 class RedoAction extends AbstractAction {
+
     private UndoManager manager;
 
     public RedoAction(UndoManager manager) {
@@ -522,3 +528,33 @@ public void actionPerformed(ActionEvent evt) {
         }
     }
 }
+
+class SaveAction extends AbstractAction {
+
+    private final ColorTextPane text;
+    private final PdfObjectTreeNode target;
+
+    public SaveAction(ColorTextPane text, PdfObjectTreeNode target) {
+        this.text = text;
+        this.target = target;
+    }
+
+    public void actionPerformed(ActionEvent evt) {
+        String contentStreamContent = this.text.getText();
+
+        PdfCop pdfCop = new PdfCop();
+
+        try {
+            pdfCop.compile(contentStreamContent);
+            System.out.println("Syntax compiled successfully!");
+            PdfObject targetPdfObject = this.target.getPdfObject();
+            if (targetPdfObject instanceof PdfStream) {
+                PdfStream stream = (PdfStream) targetPdfObject;
+                stream.setData(contentStreamContent.getBytes());
+            }
+        } catch (ParseCancellationException pce) {
+            System.out.println("Syntax failed to compile: " + pce.getMessage());
+        }
+
+    }
+}