diff --git a/dist/main.css b/dist/main.css
old mode 100644
new mode 100755
index 77ebe73..22d2bf3
Binary files a/dist/main.css and b/dist/main.css differ
diff --git a/dist/main.js b/dist/main.js
old mode 100644
new mode 100755
index de9b6dd..3362330
Binary files a/dist/main.js and b/dist/main.js differ
diff --git a/php/database/update_030003.php b/php/database/update_030003.php
new file mode 100644
index 0000000..c658bc0
--- /dev/null
+++ b/php/database/update_030003.php
@@ -0,0 +1,25 @@
+<?php
+
+###
+# @name			Update to version 3.0.3
+# @copyright	2015 by Tobias Reich
+###
+
+if (!defined('LYCHEE')) exit('Error: Direct access is not allowed!');
+
+# Add skipDuplicates to settings
+$query	= Database::prepare($database, "SELECT `key` FROM `?` WHERE `key` = 'skipDuplicates' LIMIT 1", array(LYCHEE_TABLE_SETTINGS));
+$result	= $database->query($query);
+if ($result->num_rows===0) {
+	$query	= Database::prepare($database, "INSERT INTO `?` (`key`, `value`) VALUES ('skipDuplicates', '0')", array(LYCHEE_TABLE_SETTINGS));
+	$result	= $database->query($query);
+	if (!$result) {
+		Log::error($database, 'update_030003', __LINE__, 'Could not update database (' . $database->error . ')');
+		return false;
+	}
+}
+
+# Set version
+if (Database::setVersion($database, '030003')===false) return false;
+
+?>
\ No newline at end of file
diff --git a/php/modules/Database.php b/php/modules/Database.php
index 66c1124..13bcff7 100755
--- a/php/modules/Database.php
+++ b/php/modules/Database.php
@@ -56,7 +56,8 @@ class Database extends Module {
 			'020602', #2.6.2
 			'020700', #2.7.0
 			'030000', #3.0.0
-			'030001' #3.0.1
+			'030001', #3.0.1
+			'030003' #3.0.3
 		);
 
 		# For each update
diff --git a/php/modules/Photo.php b/php/modules/Photo.php
index 8d1c292..0d9eff6 100755
--- a/php/modules/Photo.php
+++ b/php/modules/Photo.php
@@ -40,7 +40,7 @@ class Photo extends Module {
 	public function add($files, $albumID, $description = '', $tags = '') {
 
 		# Check dependencies
-		self::dependencies(isset($this->database));
+		self::dependencies(isset($this->database, $this->settings, $files));
 
 		# Check permissions
 		if (hasPermissions(LYCHEE_UPLOADS)===false||
@@ -150,6 +150,15 @@ class Photo extends Module {
 					}
 				}
 
+			} else {
+
+				# Photo already exists
+				# Check if the user wants to skip duplicates
+				if ($this->settings['skipDuplicates']==='1') {
+					Log::notice($this->database, __METHOD__, __LINE__, 'Skipped upload of existing photo because skipDuplicates is activated');
+					exit('Warning: This photo has been skipped because it\'s already in your library.');
+				}
+
 			}
 
 			# Read infos
diff --git a/src/package.json b/src/package.json
index dde5567..7e42746 100644
--- a/src/package.json
+++ b/src/package.json
@@ -1,6 +1,6 @@
 {
   "name": "Lychee",
-  "version": "3.0.2",
+  "version": "3.0.3",
   "description": "Self-hosted photo-management done right.",
   "authors": "Tobias Reich <tobias@electerious.com>",
   "license": "MIT",
@@ -10,16 +10,16 @@
     "url": "https://github.com/electerious/Lychee.git"
   },
   "devDependencies": {
-    "basiccontext": "^3.0.3",
+    "basiccontext": "^3.1.0",
     "gulp": "^3.9.0",
     "gulp-autoprefixer": "2.3.1",
     "gulp-babel": "^5.1.0",
-    "gulp-concat": "^2.5.2",
+    "gulp-concat": "^2.6.0",
     "gulp-inject": "^1.3.1",
     "gulp-load-plugins": "^1.0.0-rc",
-    "gulp-minify-css": "^1.1.6",
+    "gulp-minify-css": "^1.2.0",
     "gulp-rimraf": "^0.1.1",
-    "gulp-sass": "^2.0.1",
+    "gulp-sass": "^2.0.2",
     "gulp-uglify": "^1.2.0",
     "jquery": "^2.1.4",
     "mousetrap": "^1.5.2"
diff --git a/src/scripts/lychee.js b/src/scripts/lychee.js
index db74cab..8238f18 100644
--- a/src/scripts/lychee.js
+++ b/src/scripts/lychee.js
@@ -6,8 +6,8 @@
 lychee = {
 
 	title:			document.title,
-	version:		'3.0.2',
-	version_code:	'030002',
+	version:		'3.0.3',
+	version_code:	'030003',
 
 	update_path:	'http://lychee.electerious.com/version/index.php',
 	updateURL:		'https://github.com/electerious/Lychee',
diff --git a/src/scripts/upload.js b/src/scripts/upload.js
index e50f425..9d5833b 100755
--- a/src/scripts/upload.js
+++ b/src/scripts/upload.js
@@ -44,6 +44,7 @@ upload.start = {
 
 		var albumID	= album.getID(),
 			error 	= false,
+			warning	= false,
 			process	= function(files, file) {
 
 				var formData		= new FormData(),
@@ -56,12 +57,18 @@ upload.start = {
 
 						$('#upload_files').val('');
 
-						if (error===false) {
+						if (error===false&&warning===false) {
 
 							// Success
 							basicModal.close();
 							upload.notify('Upload complete');
 
+						} else if (error===false&&warning===true) {
+
+							// Warning
+							$('.basicModal #basicModal__action.hidden').show();
+							upload.notify('Upload complete');
+
 						} else {
 
 							// Error
@@ -130,23 +137,44 @@ upload.start = {
 
 					} else {
 
-						// Error
-						$('.basicModal .rows .row:nth-child(' + (file.num+1) + ') .status')
-							.html('Error')
-							.addClass('error');
+						if (xhr.responseText.substr(0, 6)==='Error:') {
 
-						if (xhr.responseText.substr(0, 6)==='Error:') errorText = xhr.responseText.substr(6) + ' Please take a look at the console of your browser for further details.';
-						else errorText = 'Server returned an unknown response. Please take a look at the console of your browser for further details.';
+							errorText = xhr.responseText.substr(6) + ' Please take a look at the console of your browser for further details.';
+							error = true;
+
+							// Error Status
+							$('.basicModal .rows .row:nth-child(' + (file.num+1) + ') .status')
+								.html('Failed')
+								.addClass('error');
+
+						} else if (xhr.responseText.substr(0, 8)==='Warning:') {
+
+							errorText = xhr.responseText.substr(8);
+							warning = true;
+
+							// Warning Status
+							$('.basicModal .rows .row:nth-child(' + (file.num+1) + ') .status')
+								.html('Skipped')
+								.addClass('warning');
+
+						} else {
+
+							errorText = 'Server returned an unknown response. Please take a look at the console of your browser for further details.';
+							error = true;
+
+							// Error Status
+							$('.basicModal .rows .row:nth-child(' + (file.num+1) + ') .status')
+								.html('Failed')
+								.addClass('error');
+
+						}
 
 						$('.basicModal .rows .row:nth-child(' + (file.num+1) + ') p.notice')
 							.html(errorText)
 							.show();
 
-						// Set global error
-						error = true;
-
 						// Throw error
-						lychee.error('Upload failed. Server returned the status code ' + xhr.status + '!', xhr, xhr.responseText);
+						if (error===true) lychee.error('Upload failed. Server returned the status code ' + xhr.status + '!', xhr, xhr.responseText);
 
 					}
 
diff --git a/src/styles/_message.scss b/src/styles/_message.scss
index a3a4898..7df5676 100644
--- a/src/styles/_message.scss
+++ b/src/styles/_message.scss
@@ -301,11 +301,14 @@
 			animation-iteration-count: infinite;
 
 			&.error,
+			&.warning,
 			&.success { animation: none; }
 
-			&.error { color: rgb(213, 24, 24); }
+			&.error { color: rgb(233, 42, 0); }
 
-			&.success { color: rgb(42, 213, 0); }
+			&.warning { color: rgb(228, 233, 0); }
+
+			&.success { color: rgb(126, 233, 0); }
 		}
 
 		p.notice {