diff --git a/README.md b/README.md
index 30084b2..db92fc1 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,12 @@
 
 ## Dataset types
 
+`PASCAL VOC`: Pascal voc dataset have a xml file for each image.
+
+`YOLO`: YOLO dataset have a txt file for each image.
+
+`COCO`: COCO dataset have a json file for each image.
+
 ## Current support format
 
 Currently, the following formats are supported:
@@ -16,12 +22,15 @@ Currently, the following formats are supported:
 
 ## Upcoming support format
 
-|    from    |           to           | Issue/PR(if any) |
-| :--------: | :--------------------: | ---------------- |
-| PASCAL VOC |   COCO (JSON files)    | No               |
-|    COCO    | PASCAL VOC (XML files) | No               |
-|    COCO    |    YOLO (TXT files)    | No               |
-|    YOLO    |   COCO (JSON files)    | No               |
+|    from    |            to             | Issue/PR(if any) |
+| :--------: | :-----------------------: | ---------------- |
+| PASCAL VOC |     COCO (JSON files)     | No               |
+| PASCAL VOC | TFRecord (TFRecord files) | No               |
+|    COCO    |  PASCAL VOC (XML files)   | No               |
+|    COCO    |     YOLO (TXT files)      | No               |
+|    COCO    | TFRecord (TFRecord files) | No               |
+|    YOLO    |     COCO (JSON files)     | No               |
+|    YOLO    | TFRecord (TFRecord files) | No               |
 
 ## Installation
 
@@ -61,7 +70,7 @@ python convert.py --input-folder ./data/pascal_voc \
 
 ## Contributing
 
-create an issue/PR if any format is missing.Open-source contribution is welcome.check the [contributing guide](/CONTRIBUTING.md) for details. 
+create an issue/PR if any format is missing.Open-source contribution is welcome.check the [contributing guide](/CONTRIBUTING.md) for details.
 
 ## Reference
 
diff --git a/output/README.md b/output/README.md
deleted file mode 100644
index e64b2da..0000000
--- a/output/README.md
+++ /dev/null
@@ -1 +0,0 @@
-# Output folder after running the script
diff --git a/requirements.txt b/requirements.txt
index 1dbed7b..a917f02 100644
Binary files a/requirements.txt and b/requirements.txt differ
diff --git a/src/utils.py b/src/utils.py
index 5d4a36d..0e0cda8 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -1,15 +1,30 @@
 import os
-from PIL import Image
-from glob import glob
-from xml.etree import ElementTree as ET
 import shutil
+from glob import glob
+from PIL import Image
+from pathlib import Path
 from datetime import datetime
-from path import Path
+from xml.etree import ElementTree as ET
+
 
 class Convertor:
     '''
     Convertor class is a class for converting images and annotations
     from one format to another.
+        
+    Usage:
+        # voc to yolo
+        convertor = Convertor('data/VOC2007', 'outout/VOC2007_yolo', 'voc', 'yolo')
+        convertor.voc2yolo()
+
+        # voc to coco
+        convertor = Convertor('data/VOC2007', 'outout/VOC2007_coco', 'voc', 'coco')
+        convertor.voc2coco()
+
+        # yolo to voc
+        convertor = Convertor('data/yolo', 'outout/VOC2007', 'yolo', 'voc')
+        convertor.yolo2voc()
+
 
     Parameters
     ----------
@@ -30,13 +45,40 @@ class Convertor:
     yolo2voc()
         Convert Yolo5 format to Pascal VOC format.
 
+    yolo2coco()
+        Convert Yolo5 format to COCO format.
+    
+    coco2yolo()
+        Convert COCO format to Yolo5 format.
+
+    voc2coco()
+        Convert Pascal VOC format to COCO format.
+    
+    coco2voc()
+        Convert COCO format to Pascal VOC format.
+
+    pascal2tfrecord()
+        Convert Pascal VOC format to TFRecord format.
+    
+    coco2tfrecord()
+        Convert COCO format to TFRecord format.
+
+    yolo2tfrecord()
+        Convert Yolo5 format to TFRecord format.
+
+
     # Pascal Voc - XML
     # Pascal VOC format is a XML file format for images and annotations.
+
     # Yolo5 - TXT
     # Yolo5 format is a text file format for images and annotations.
+
     # COCO - JSON
     # COCO format is a JSON file format for images and annotations.
 
+    # TFRecord - TFRecord
+    # TFRecord format is a TFRecord file format for images and annotations.
+
     '''
     def __init__(self, input_folder, outout_folder, input_format, output_format):
         root_dit = Path(__file__).parent.parent # root directory
@@ -88,7 +130,7 @@ def voc2yolo(self):
                         f.write(label + ' ' + str(x) + ' ' + str(y) + ' ' + str(w) + ' ' + str(h) + '\n')
 
         else:
-            print('Not support')
+            print('Conversion not supported yet, please check https://github.com/codePerfectPlus/dataset-convertor and create an issue.')
 
     def yolo2voc(self):
         ''' yolo txt format to pascal voc xml format '''
@@ -151,7 +193,7 @@ def yolo2voc(self):
                         tree = ET.ElementTree(root)
                         tree.write(os.path.join(self.output_annotation_folder, image_file_name[:-4] + '.xml'))
         else:
-            print('Not support')
+            print('Conversion not supported yet, please check https://github.com/codePerfectPlus/dataset-convertor and create an issue.')
 
     def yolo2coco(self):
         ''' yolo txt format to coco json format '''
@@ -168,3 +210,16 @@ def voc2coco(self):
     def coco2voc(self):
         ''' coco json format to voc xml format '''
         pass
+
+    def coco2tfrecord(self):
+        ''' coco json format to tfrecord format '''
+        pass
+
+    def yolo2tfrecord(self):
+        ''' yolo txt format to tfrecord format '''
+        pass
+
+    def voc2tfrecord(self):
+        ''' voc xml format to tfrecord format '''
+        pass
+    
\ No newline at end of file