diff --git a/ocr-service-v1/ocr-service-server-v1/src/main/java/com/iqser/red/service/ocr/v1/server/service/InvisibleElementRemovalService.java b/ocr-service-v1/ocr-service-server-v1/src/main/java/com/iqser/red/service/ocr/v1/server/service/InvisibleElementRemovalService.java
index 2e7bda6..a0005ae 100644
--- a/ocr-service-v1/ocr-service-server-v1/src/main/java/com/iqser/red/service/ocr/v1/server/service/InvisibleElementRemovalService.java
+++ b/ocr-service-v1/ocr-service-server-v1/src/main/java/com/iqser/red/service/ocr/v1/server/service/InvisibleElementRemovalService.java
@@ -89,7 +89,7 @@ public class InvisibleElementRemovalService {
 
             context.visitedXObjIds().clear();
 
-            // removeOverlappedElements(page, writer, context);
+            removeOverlappedElements(page, writer, context);
         }
         pdfDoc.save(out, SDFDoc.SaveMode.REMOVE_UNUSED, null);
     }
diff --git a/ocr-service-v1/ocr-service-server-v1/src/main/java/com/iqser/red/service/ocr/v1/server/service/OCRService.java b/ocr-service-v1/ocr-service-server-v1/src/main/java/com/iqser/red/service/ocr/v1/server/service/OCRService.java
index 8f8626e..afa3b93 100644
--- a/ocr-service-v1/ocr-service-server-v1/src/main/java/com/iqser/red/service/ocr/v1/server/service/OCRService.java
+++ b/ocr-service-v1/ocr-service-server-v1/src/main/java/com/iqser/red/service/ocr/v1/server/service/OCRService.java
@@ -6,7 +6,6 @@ import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.Map;
 
-import io.micrometer.core.annotation.Timed;
 import org.springframework.amqp.rabbit.core.RabbitTemplate;
 import org.springframework.stereotype.Service;
 
@@ -23,6 +22,7 @@ import com.pdftron.pdf.Page;
 import com.pdftron.pdf.RectCollection;
 import com.pdftron.sdf.SDFDoc;
 
+import io.micrometer.core.annotation.Timed;
 import lombok.RequiredArgsConstructor;
 import lombok.SneakyThrows;
 import lombok.extern.slf4j.Slf4j;
@@ -81,15 +81,16 @@ public class OCRService {
 
         Map<Integer, RectCollection> pageIdToRectCollection = imagePositionRetrievalService.getImagePositionPerPage(pdfDoc, true);
 
-        OCROptions options = new OCROptions();
-        PDFDoc ocrPageDoc = new PDFDoc();
-
         int numProcessedPages = 0;
         for (Integer pageId : pageIdToRectCollection.keySet()) {
             try {
-                // optimization by only scanning pages that contain images
+                // optimization: creating a new document is faster than reusing the same and adding/removing pages one by one
+                OCROptions options = new OCROptions();
+                PDFDoc ocrPageDoc = new PDFDoc();
+                // optimization: only scanning pages that contain images
                 Page pdfPage = pdfDoc.getPage(pageId);
-                pdfPage.setMediaBox(pdfPage.getCropBox()); // this line ensures the ocr text is placed correctly by PDFTron
+                // optimization: this line ensures the ocr text is placed correctly by PDFTron
+                pdfPage.setMediaBox(pdfPage.getCropBox());
                 ocrPageDoc.pagePushBack(pdfPage);
                 options.addTextZonesForPage(pageIdToRectCollection.get(pageId), 1);
                 options.addLang(ENGLISH);
@@ -109,7 +110,7 @@ public class OCRService {
                 Page ocrPage = ocrPageDoc.getPage(1);
                 pdfDoc.pageInsert(pdfDoc.getPageIterator(pageId), ocrPage);
                 pdfDoc.pageRemove(pdfDoc.getPageIterator(pageId + 1));
-                ocrPageDoc.pageRemove(ocrPageDoc.getPageIterator(1));
+                ocrPageDoc.close();
 
                 rabbitTemplate.convertAndSend(MessagingConfiguration.OCR_STATUS_UPDATE_RESPONSE_QUEUE,
                         objectMapper.writeValueAsString(OCRStatusUpdateResponse.builder()
@@ -124,8 +125,6 @@ public class OCRService {
             }
         }
 
-        ocrPageDoc.close();
-
         rabbitTemplate.convertAndSend(MessagingConfiguration.OCR_STATUS_UPDATE_RESPONSE_QUEUE,
                 objectMapper.writeValueAsString(OCRStatusUpdateResponse.builder()
                         .fileId(fileId)
@@ -137,4 +136,5 @@ public class OCRService {
         Optimizer.optimize(pdfDoc);
         pdfDoc.save(out, SDFDoc.SaveMode.LINEARIZED, null);
     }
+
 }
diff --git a/ocr-service-v1/ocr-service-server-v1/src/test/resources/log4j2-test.xml b/ocr-service-v1/ocr-service-server-v1/src/test/resources/log4j2-test.xml
new file mode 100644
index 0000000..b4895cf
--- /dev/null
+++ b/ocr-service-v1/ocr-service-server-v1/src/test/resources/log4j2-test.xml
@@ -0,0 +1,16 @@
+<Configuration>
+
+    <Appenders>
+        <Console name="CONSOLE" target="SYSTEM_OUT">
+            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
+        </Console>
+    </Appenders>
+
+    <Loggers>
+        <Root level="warn">
+            <AppenderRef ref="CONSOLE"/>
+        </Root>
+        <Logger name="com.iqser" level="info"/>
+    </Loggers>
+
+</Configuration>