diff --git a/elodie.py b/elodie.py
index fa5c815..d14a196 100755
--- a/elodie.py
+++ b/elodie.py
@@ -21,6 +21,7 @@ from elodie import log
 from elodie.compatability import _decode
 from elodie.config import load_config
 from elodie.filesystem import FileSystem
+from elodie.gui import CompareImageApp
 from elodie.localstorage import Db
 from elodie.media.media import Media, get_all_subclasses
 from elodie.media.audio import Audio
@@ -474,11 +475,60 @@ def _update(album, location, time, title, paths, debug):
         sys.exit(1)
 
 
+@click.command('compare')
+@click.option('--debug', default=False, is_flag=True,
+              help='Override the value in constants.py with True.')
+@click.option('--dry-run', default=False, is_flag=True,
+              help='Dry run only, no change made to the filesystem.')
+@click.option('--find-duplicates', '-f', default=False, is_flag=True)
+@click.option('--output-dir', '-o', default=False, is_flag=True, help='output\
+        dir')
+@click.option('--remove-duplicates', '-r', default=False, is_flag=True)
+@click.option('--revert-compare', '-R', default=False, is_flag=True, help='Revert\
+        compare')
+@click.option('--similar-to', '-s', default=False, help='Similar to given\
+        image')
+@click.option('--similarity', '-S', default=80, help='Similarity level for\
+        images')
+@click.option('--verbose', '-v', default=False, is_flag=True,
+              help='True if you want to see details of file processing')
+@click.argument('path', nargs=1, required=True)
+def _compare(debug, dry_run, find_duplicates, output_dir, remove_duplicates,
+        revert_compare, similar_to, similarity, verbose, path):
+    '''Compare files in directories'''
+
+    logger = logging.getLogger('elodie')
+    if debug:
+        logger.setLevel(logging.DEBUG)
+    elif verbose:
+        logger.setLevel(logging.INFO)
+    else:
+        logger.setLevel(logging.ERROR)
+
+    # Initialize Db
+    db = Db(path)
+
+    filesystem = FileSystem(mode='move', dry_run=dry_run, logger=logger)
+
+    if revert_compare:
+        summary, has_errors = filesystem.revert_compare(path, db, dry_run)
+    else:
+        summary, has_errors = filesystem.sort_similar_images(path, db,
+                similarity, dry_run)
+
+    if verbose or debug:
+        summary.write()
+
+    if has_errors:
+        sys.exit(1)
+
+
 @click.group()
 def main():
     pass
 
 
+main.add_command(_compare)
 main.add_command(_import)
 main.add_command(_sort)
 main.add_command(_update)
diff --git a/elodie/filesystem.py b/elodie/filesystem.py
index 17df748..7f5044a 100644
--- a/elodie/filesystem.py
+++ b/elodie/filesystem.py
@@ -21,6 +21,7 @@ from elodie import constants
 
 from elodie.localstorage import Db
 from elodie.media.media import get_media_class, get_all_subclasses
+from elodie.media.photo import CompareImages
 from elodie.plugins.plugins import Plugins
 from elodie.summary import Summary
 
@@ -893,6 +894,149 @@ class FileSystem(object):
             return self.summary, has_errors
 
 
+    def check_path(self, path):
+        path = os.path.abspath(os.path.expanduser(path))
+
+        # some error checking
+        if not os.path.exists(path):
+            self.logger.error(f'Directory {path} does not exist')
+            sys.exit(1)
+
+        return path
+
+
+    def set_hash(self, result, src_path, dest_path, checksum, db):
+        if result:
+            # Check if file remain the same
+            result = self.checkcomp(dest_path, checksum)
+            has_errors = False
+            if result:
+                if not self.dry_run:
+                    db.add_hash(checksum, dest_path)
+                    db.update_hash_db()
+
+                if dest_path:
+                    self.logger.info(f'{src_path} -> {dest_path}')
+
+                self.summary.append((src_path, dest_path))
+
+            else:
+                self.logger.error(f'Files {src_path} and {dest_path} are not identical')
+                # sys.exit(1)
+                self.summary.append((src_path, False))
+                has_errors = True
+        else:
+            self.summary.append((src_path, False))
+            has_errors = True
+
+        return has_errors
+
+
+    def move_file(self, img_path, dest_path, checksum, db):
+        if not self.dry_run:
+            try:
+                shutil.move(img_path, dest_path)
+            except OSError as error:
+                self.logger.error(error)
+
+        self.logger.info(f'move: {img_path} -> {dest_path}')
+        return self.set_hash(True, img_path, dest_path, checksum, db)
+
+
+    def sort_similar_images(self, path, db, similarity=80):
+
+        has_errors = False
+        path = self.check_path(path)
+        for dirname, dirnames, filenames, level in self.walklevel(path, None):
+            if dirname == os.path.join(path, '.elodie'):
+                continue
+            if dirname.find('similar_to') == 0:
+                continue
+
+            file_paths = set()
+            for filename in filenames:
+                file_paths.add(os.path.join(dirname, filename))
+
+            ci = CompareImages(file_paths, logger=self.logger)
+
+            images = set([ i for i in ci.get_images() ])
+            for image in images:
+                if not os.path.isfile(image):
+                    continue
+                checksum1 = db.checksum(image)
+                # Process files
+                # media = get_media_class(src_path, False)
+                # TODO compare metadata
+                # if media:
+                #     metadata = media.get_metadata()
+                similar = False
+                moved_imgs = set()
+                for img_path in ci.find_similar(image, similarity):
+                    similar = True
+                    checksum2 = db.checksum(img_path)
+                    # move image into directory
+                    name = os.path.splitext(os.path.basename(image))[0]
+                    directory_name = 'similar_to_' + name
+                    dest_directory = os.path.join(os.path.dirname(img_path),
+                            directory_name)
+                    dest_path = os.path.join(dest_directory, os.path.basename(img_path))
+
+                    result = self.create_directory(dest_directory)
+                    # Move the simlars file into the destination directory
+                    if result:
+                        result = self.move_file(img_path, dest_path, checksum2, db)
+                        moved_imgs.add(img_path)
+                        if not result:
+                            has_errors = True
+                    else:
+                        has_errors = True
+
+
+                if similar:
+                    dest_path = os.path.join(dest_directory,
+                            os.path.basename(image))
+                    result = self.move_file(image, dest_path, checksum1, db)
+                    moved_imgs.add(image)
+                    if not result:
+                        has_errors = True
+
+                for moved_img in moved_imgs:
+                    ci.file_paths.remove(moved_img)
+
+        return self.summary, has_errors
+
+
+    def revert_compare(self, path, db):
+
+        has_errors = False
+        path = self.check_path(path)
+        for dirname, dirnames, filenames, level in self.walklevel(path, None):
+            if dirname == os.path.join(path, '.elodie'):
+                continue
+            if dirname.find('similar_to') == 0:
+                continue
+
+            for subdir in dirnames:
+                if subdir.find('similar_to') == 0:
+                    file_names = os.listdir(os.path.abspath(os.path.join(dirname, subdir)))
+                    for file_name in file_names:
+                        # move file to initial folder
+                        img_path = os.path.join(dirname, subdir, file_name)
+                        if os.path.isdir(img_path):
+                            continue
+                        checksum = db.checksum(img_path)
+                        dest_path = os.path.join(dirname, os.path.basename(img_path))
+                        result = self.move_file(img_path, dest_path, checksum, db)
+                        if not result:
+                            has_errors = True
+                    # remove directory
+                    try:
+                        os.rmdir(os.path.join (dirname, subdir))
+                    except OSError as error:
+                        self.logger.error(error)
+
+        return self.summary, has_errors
+
     def process_file(self, _file, destination, db, media, album_from_folder,
             mode, **kwargs):
         allow_duplicate = False
diff --git a/elodie/media/photo.py b/elodie/media/photo.py
index 7475230..a4bb3b0 100644
--- a/elodie/media/photo.py
+++ b/elodie/media/photo.py
@@ -5,8 +5,12 @@ image objects (JPG, DNG, etc.).
 .. moduleauthor:: Jaisen Mathai <jaisen@jmathai.com>
 """
 
+import imagehash
 import imghdr
+import logging
+import numpy as np
 import os
+from PIL import Image
 import time
 
 from .media import Media
@@ -81,3 +85,88 @@ class Photo(Media):
                         return False
 
         return extension in self.extensions
+
+
+class CompareImages:
+    def __init__(self, file_paths, hash_size=8, logger=logging.getLogger()):
+        self.file_paths = file_paths
+        self.hash_size = hash_size
+        self.logger = logger
+        logger.setLevel(logging.INFO)
+
+    def get_images(self):
+        '''
+        :returns: img_path generator
+        '''
+        for img_path in self.file_paths:
+            if imghdr.what(img_path) is not None:
+                yield img_path
+
+
+    def find_duplicates(self):
+        """
+        Find duplicates
+        """
+
+        hashes = {}
+        duplicates = []
+        # Searching for duplicates.
+        for img_path in self.get_images():
+            if imghdr.what(img_path) is not None:
+                with Image.open(img_path) as img:
+                    temp_hash = imagehash.average_hash(img, self.hash_size)
+                    if temp_hash in hashes:
+                        self.logger.info("Duplicate {} \nfound for image {}\n".format(img_path, hashes[temp_hash]))
+                        duplicates.append(img_path)
+                    else:
+                        hashes[temp_hash] = img_path
+
+        return duplicates
+
+
+    def remove_duplicates(self, duplicates):
+        for duplicate in duplicates:
+            try:
+                os.remove(duplicate)
+            except OSError as error:
+                self.logger.error(error)
+
+
+    def remove_duplicates_interactive(self, duplicates):
+        if len(duplicates) != 0:
+            answer = input(f"Do you want to delete these {duplicates} images? Y/n: ")
+            if(answer.strip().lower() == 'y'):
+                self.remove_duplicates(duplicates)
+                self.logger.info(f'{duplicate} deleted successfully!')
+        else:
+            self.logger.info("No duplicates found")
+
+
+    def find_similar(self, image, similarity=80):
+        '''
+        Find similar images
+        :returns: img_path generator
+        '''
+        threshold = 1 - similarity/100
+        diff_limit = int(threshold*(self.hash_size**2))
+
+        hash1 = ''
+        if imghdr.what(image) is not None:
+            with Image.open(image) as img:
+                hash1 = imagehash.average_hash(img, self.hash_size).hash
+
+        self.logger.info(f'Finding similar images to {image}')
+        for img_path in self.get_images():
+            if img_path == image:
+                continue
+            with Image.open(img_path) as img:
+                hash2 = imagehash.average_hash(img, self.hash_size).hash
+
+                diff_images = np.count_nonzero(hash1 != hash2)
+                if diff_images <= diff_limit:
+                    threshold_img = diff_images / (self.hash_size**2)
+                    similarity_img = round((1 - threshold_img) * 100)
+                    self.logger.info(f'{img_path} image found {similarity_img}% similar to {image}')
+                    yield img_path
+
+
diff --git a/requirements.txt b/requirements.txt
index a828291..6eae61c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 click==6.6
+imagehash==4.2.1
 requests==2.20.0
 Send2Trash==1.3.0
 configparser==3.5.0