diff --git a/src/main/java/com/iqser/red/pdftronlogic/commons/InvisibleElementRemovalService.java b/src/main/java/com/iqser/red/pdftronlogic/commons/InvisibleElementRemovalService.java
index d0345ad..827c13d 100644
--- a/src/main/java/com/iqser/red/pdftronlogic/commons/InvisibleElementRemovalService.java
+++ b/src/main/java/com/iqser/red/pdftronlogic/commons/InvisibleElementRemovalService.java
@@ -12,8 +12,6 @@ import java.util.List;
 import java.util.Set;
 import java.util.TreeSet;
 
-import org.springframework.stereotype.Service;
-
 import com.google.common.primitives.Bytes;
 import com.google.common.primitives.Doubles;
 import com.pdftron.common.Matrix2D;
@@ -38,33 +36,13 @@ import lombok.SneakyThrows;
 import lombok.extern.slf4j.Slf4j;
 
 @Slf4j
-@Service
 public class InvisibleElementRemovalService {
 
     static public final double TOLERANCE = 1e-3;
 
 
-    /**
-     * Removes all hidden Text, Path and Image Elements from a PDF Document.
-     * handled cases:
-     * -Text which is transparent or is set to not render
-     * -Elements outside of clipping path
-     * -Elements that have been painted over by visible and filled Paths
-     * unhandled cases:
-     * -Elements covered by widely stroked path
-     * -Elements with the same color as background
-     * -Any Text set to clipping with its many interactions with other elements
-     *
-     * @param pdfFile The PDF file to process
-     * @param delta   If this flag is set only the removed Elements will be written to the output file.
-     *                The Elements are red if they are removed by clipping path, blue for transparency, and a green bounding box for overlap.
-     * @param out     OutputStream to write the resulting file to
-     **/
     @SneakyThrows
-    public void removeInvisibleElements(InputStream pdfFile, OutputStream out, boolean delta) {
-
-        PDFDoc pdfDoc = new PDFDoc(pdfFile);
-
+    private void execute(PDFDoc pdfDoc, boolean delta) {
         ElementWriter writer = new ElementWriter();
         ElementReader reader = new ElementReader();
         Set<Long> visitedXObjIds = new TreeSet<>();
@@ -90,21 +68,49 @@ public class InvisibleElementRemovalService {
             context.visitedXObjIds().clear();
 
             removeOverlappedElements(page, writer, context);
+            writer.destroy();
+            reader.destroy();
         }
+    }
+    /**
+     * Removes all hidden Text, Path and Image Elements from a PDF Document.
+     * handled cases:
+     * -Text which is transparent or is set to not render
+     * -Elements outside of clipping path
+     * -Elements that have been painted over by visible and filled Paths
+     * unhandled cases:
+     * -Elements covered by widely stroked path
+     * -Elements with the same color as background
+     * -Any Text set to clipping with its many interactions with other elements
+     *
+     * @param pdfFile The PDF file to process
+     * @param delta   If this flag is set only the removed Elements will be written to the output file.
+     *                The Elements are red if they are removed by clipping path, blue for transparency, and a green bounding box for overlap.
+     * @param out     OutputStream to write the resulting file to
+     **/
+    @SneakyThrows
+    public void removeInvisibleElements(InputStream pdfFile, OutputStream out, boolean delta) {
+
+        PDFDoc pdfDoc = new PDFDoc(pdfFile);
+
+        execute(pdfDoc, delta);
 
         try {
-            pdfDoc.save(out, SDFDoc.SaveMode.LINEARIZED, null);
+             pdfDoc.save(out, SDFDoc.SaveMode.LINEARIZED, null);
         } catch (Exception e) {
             log.error("File could not be saved after invisible element removal");
             throw new RuntimeException(e);
         }
 
-        writer.destroy();
-        reader.destroy();
         pdfDoc.close();
     }
 
 
+    @SneakyThrows
+    public void removeInvisibleElements(PDFDoc pdfDoc, boolean delta) {
+        execute(pdfDoc, delta);
+    }
+
     private void removeClippedElementsAndInvisibleTextAndRememberOverlappedElements(Page page,
                                                                                     ElementWriter writer,
                                                                                     InvisibleElementRemovalContext context) throws PDFNetException {