diff --git a/core/core.php b/core/core.php
index 544986a7..2dc816a0 100644
--- a/core/core.php
+++ b/core/core.php
@@ -26,6 +26,10 @@ class common {
 	const GROUP_MEMBER = 1;
 	const GROUP_MODERATOR = 2;
 	const GROUP_ADMIN = 3;
+	const BACKUP_DIR = 'site/backup/';
+	const DATA_DIR = 'site/data/';
+	const FILE_DIR = 'site/file/';
+	const TEMP_DIR = 'site/tmp/';
 
 	// Numéro de version 
 	const ZWII_VERSION = '9.1.08';
@@ -130,13 +134,13 @@ class common {
 		$this->importData();
 
 		// Génère le fichier de données lorque les deux fichiers sont absents ou seulement le thème est - installation fraîche par défaut
-		if(file_exists('site/data/core.json')   === false OR 
-		   file_exists('site/data/theme.json')  === false) {
+		if(file_exists(self::DATA_DIR.'core.json')   === false OR 
+		   file_exists(self::DATA_DIR.'theme.json')  === false) {
 			include_once('core/module/install/ressource/defaultdata.php');   
 			$this->setData([install::$defaultData]);
 			$this->saveData();
-			chmod('site/data/core.json', 0755);
-			chmod('site/data/theme.json', 0755);
+			chmod(self::DATA_DIR.'core.json', 0755);
+			chmod(self::DATA_DIR.'theme.json', 0755);
 		} 
 
 		// Import des données d'un fichier data.json déjà présent
@@ -223,7 +227,7 @@ class common {
 	public function readData() {
 		// Trois tentatives
 		for($i = 0; $i < 3; $i++) {
-			$this->setData([json_decode(file_get_contents('site/data/core.json'), true) + json_decode(file_get_contents('site/data/theme.json'), true)]);
+			$this->setData([json_decode(file_get_contents(self::DATA_DIR.'core.json'), true) + json_decode(file_get_contents(self::DATA_DIR.'theme.json'), true)]);
 			if($this->data) {
 				break;
 			}
@@ -240,26 +244,26 @@ class common {
 	 * Converti un fichier de données data.json puis le renomme
 	 */
 	public function importData() {
-		if(file_exists('site/data/data.json')) {
+		if(file_exists(self::DATA_DIR.'data.json')) {
 			// Trois tentatives
 			for($i = 0; $i < 3; $i++) {
-				$tempData = [json_decode(file_get_contents('site/data/data.json'), true)];			
+				$tempData = [json_decode(file_get_contents(self::DATA_DIR.'data.json'), true)];			
 				if($tempData) {
 					for($i = 0; $i < 3; $i++) {
-						if(file_put_contents('site/data/core.json', json_encode(array_slice($tempData[0],0,5)), LOCK_EX) !== false) {
+						if(file_put_contents(self::DATA_DIR.'core.json', json_encode(array_slice($tempData[0],0,5)), LOCK_EX) !== false) {
 							break;
 						}
 						// Pause de 10 millisecondes
 						usleep(10000);
 					}
 					for($i = 0; $i < 3; $i++) {
-						if(file_put_contents('site/data/theme.json', json_encode(array_slice($tempData[0],5)), LOCK_EX) !== false) {
+						if(file_put_contents(self::DATA_DIR.'theme.json', json_encode(array_slice($tempData[0],5)), LOCK_EX) !== false) {
 							break;
 						}
 						// Pause de 10 millisecondes
 						usleep(10000);
 					}					
-					rename ('site/data/data.json','site/data/imported_data.json');
+					rename (self::DATA_DIR.'data.json',self::DATA_DIR.'imported_data.json');
 					break;
 				}
 				elseif($i === 2) {
@@ -342,7 +346,7 @@ class common {
 	 * En local, copie du site décran de ZwiiCMS
 	 */	
 	public function makeImageTag () {
-		if (!file_exists('site/file/source/screenshot.png'))
+		if (!file_exists(self::FILE_DIR.'source/screenshot.png'))
 		{ 			
 			if ( strpos(helper::baseUrl(false),'localhost') == 0 AND strpos(helper::baseUrl(false),'127.0.0.1') == 0)	{							
 				$googlePagespeedData = file_get_contents('https://www.googleapis.com/pagespeedonline/v2/runPagespeed?url='. helper::baseUrl(false) .'&screenshot=true');	
@@ -351,7 +355,7 @@ class common {
 				$screenshot = str_replace(array('_','-'),array('/','+'),$screenshot);
 				$data = 'data:image/jpeg;base64,'.$screenshot;
 				$data = base64_decode(preg_replace('#^data:image/\w+;base64,#i', '', $data));			
-				file_put_contents( 'site/file/source/screenshot.png',$data);
+				file_put_contents( self::FILE_DIR.'source/screenshot.png',$data);
 			}
 		}
 	}
@@ -521,7 +525,7 @@ class common {
 		// 5 premières clés principales
 		// Trois tentatives
 		for($i = 0; $i < 3; $i++) {
-			if(file_put_contents('site/data/core.json', json_encode(array_slice($this->getData(),0,5)) , LOCK_EX) !== false) {
+			if(file_put_contents(self::DATA_DIR.'core.json', json_encode(array_slice($this->getData(),0,5)) , LOCK_EX) !== false) {
 				break;
 			}
 			// Pause de 10 millisecondes
@@ -531,7 +535,7 @@ class common {
 		// dernière clé principale
 		// Trois tentatives
 		for($i = 0; $i < 3; $i++) {
-			if(file_put_contents('site/data/theme.json', json_encode(array_slice($this->getData(),5)), LOCK_EX) !== false) {
+			if(file_put_contents(self::DATA_DIR.'theme.json', json_encode(array_slice($this->getData(),5)), LOCK_EX) !== false) {
 				break;
 			}
 			// Pause de 10 millisecondes
@@ -904,7 +908,7 @@ class core extends common {
 		// Supprime les fichiers temporaires
 		$lastClearTmp = mktime(0, 0, 0);
 		if($lastClearTmp > $this->getData(['core', 'lastClearTmp']) + 86400) {
-			$iterator = new DirectoryIterator('site/tmp/');
+			$iterator = new DirectoryIterator(self::TEMP_DIR);
 			foreach($iterator as $fileInfos) {
 				if($fileInfos->isFile() AND $fileInfos->getBasename() !== '.gitkeep') {
 					@unlink($fileInfos->getPathname());
@@ -923,13 +927,13 @@ class core extends common {
 			AND $this->getData(['user']) // Pas de backup pendant l'installation
 		) {
 			// Copie du fichier de données
-			copy('site/data/core.json', 'site/backup/' . date('Y-m-d', $lastBackup) . '.json');
+			copy(self::DATA_DIR.'core.json', self::BACKUP_DIR . date('Y-m-d', $lastBackup) . '.json');
 			// Date du dernier backup
 			$this->setData(['core', 'lastBackup', $lastBackup]);
 			// Enregistre les données
 			$this->saveData();
 			// Supprime les backups de plus de 30 jours
-			$iterator = new DirectoryIterator('site/backup/');
+			$iterator = new DirectoryIterator(self::BACKUP_DIR);
 			foreach($iterator as $fileInfos) {
 				if(
 					$fileInfos->isFile()
@@ -941,17 +945,17 @@ class core extends common {
 			}
 		}
 		// Crée le fichier de personnalisation avancée
-		if(file_exists('site/data/custom.css') === false) {
-			file_put_contents('site/data/custom.css', file_get_contents('core/module/theme/resource/custom.css'));
-			chmod('site/data/custom.css', 0755);
+		if(file_exists(self::DATA_DIR.'custom.css') === false) {
+			file_put_contents(self::DATA_DIR.'custom.css', file_get_contents('core/module/theme/resource/custom.css'));
+			chmod(self::DATA_DIR.'custom.css', 0755);
 		}
 		// Crée le fichier de personnalisation
-		if(file_exists('site/data/theme.css') === false) {
-			file_put_contents('site/data/theme.css', '');
-			chmod('site/data/theme.css', 0755);
+		if(file_exists(self::DATA_DIR.'theme.css') === false) {
+			file_put_contents(self::DATA_DIR.'theme.css', '');
+			chmod(self::DATA_DIR.'theme.css', 0755);
 		}
 		// Check la version
-		$cssVersion = preg_split('/\*+/', file_get_contents('site/data/theme.css'));
+		$cssVersion = preg_split('/\*+/', file_get_contents(self::DATA_DIR.'theme.css'));
 		if(empty($cssVersion[1]) OR $cssVersion[1] !== md5(json_encode($this->getData(['theme'])))) {
 			// Version
 			$css = '/*' . md5(json_encode($this->getData(['theme']))) . '*/';
@@ -999,11 +1003,11 @@ class core extends common {
 
 			if ($this->getData(['theme', 'header', 'height']) === 'none') {
 				// Controle de l'existence du fichier
-				if (file_exists('site/file/source/' . $this->getData(['theme','header','image'])) &&
+				if (file_exists(self::FILE_DIR.'source/' . $this->getData(['theme','header','image'])) &&
 					$this->getData(['theme', 'header', 'image'])	 ) {					
 					// On établie la hauteur du div en proportion de l'image
 					// (hauteur / largeur) . 100 
-					$sizes = getimagesize('site/file/source/'.$this->getData(['theme','header','image']));
+					$sizes = getimagesize(self::FILE_DIR.'source/'.$this->getData(['theme','header','image']));
 					$css .= ';height: 0;  padding-top:';
 					$css .= ( $sizes[1] / $sizes[0] )* 100;
 					$css .= '%';
@@ -1051,7 +1055,7 @@ class core extends common {
 			$css .= '#footerText{text-align:' . $this->getData(['theme', 'footer', 'textAlign']) . '}';
 			$css .= '#footerCopyright{text-align:' . $this->getData(['theme', 'footer', 'copyrightAlign']) . '}';
 			// Enregistre la personnalisation
-			file_put_contents('site/data/theme.css', $css);
+			file_put_contents(self::DATA_DIR.'theme.css', $css);
 		}
 	}
 	/**
@@ -1930,9 +1934,9 @@ class layout extends common {
 	public function showFavicon() {
 		$favicon = $this->getData(['config', 'favicon']);
 		if($favicon &&
-			file_exists('site/file/source/' . $favicon)
+			file_exists(self::FILE_DIR.'source/' . $favicon)
 			) {
-			echo '<link rel="shortcut icon" href="' . helper::baseUrl(false) . 'site/file/source/' . $favicon . '">';
+			echo '<link rel="shortcut icon" href="' . helper::baseUrl(false) . self::FILE_DIR.'source/' . $favicon . '">';
 		} else {
 			echo '<link rel="shortcut icon" href="' . helper::baseUrl(false) . 'core/vendor/zwiico/ico/favicon.ico">';
 		}
@@ -1982,14 +1986,14 @@ class layout extends common {
 				    break;
 				case 'icon' :
 				    if ($this->getData(['page', $parentPageId, 'iconUrl']) != "") {
-				    $items .= '<img alt="'.$this->getData(['page', $parentPageId, 'title']).'" src="'. helper::baseUrl(false) .'site/file/source/'.$this->getData(['page', $parentPageId, 'iconUrl']).'" />';
+				    $items .= '<img alt="'.$this->getData(['page', $parentPageId, 'title']).'" src="'. helper::baseUrl(false) .self::FILE_DIR.'source/'.$this->getData(['page', $parentPageId, 'iconUrl']).'" />';
 				    } else {
 				    $items .= $this->getData(['page', $parentPageId, 'title']);
 				    }
 				    break;
 				case 'icontitle' :
 				    if ($this->getData(['page', $parentPageId, 'iconUrl']) != "") {
-				    	$items .= '<img alt="'.$this->getData(['page', $parentPageId, 'title']).'" src="'. helper::baseUrl(false) .'site/file/source/'.$this->getData(['page', $parentPageId, 'iconUrl']).'" data-tippy-content="';
+				    	$items .= '<img alt="'.$this->getData(['page', $parentPageId, 'title']).'" src="'. helper::baseUrl(false) .self::FILE_DIR.'source/'.$this->getData(['page', $parentPageId, 'iconUrl']).'" data-tippy-content="';
 				   	 	$items .= $this->getData(['page', $parentPageId, 'title']).'"/>';
 				    } else {
 				  	 	$items .= $this->getData(['page', $parentPageId, 'title']);
@@ -2042,14 +2046,14 @@ class layout extends common {
 						break;
 					case 'icon' :
 						if ($this->getData(['page', $childKey, 'iconUrl']) != "") {
-						$items .= '<img alt="'.$this->getData(['page', $parentPageId, 'title']).'" src="'. helper::baseUrl(false) .'site/file/source/'.$this->getData(['page', $childKey, 'iconUrl']).'" />';
+						$items .= '<img alt="'.$this->getData(['page', $parentPageId, 'title']).'" src="'. helper::baseUrl(false) .self::FILE_DIR.'source/'.$this->getData(['page', $childKey, 'iconUrl']).'" />';
 						} else {
 						$items .= $this->getData(['page', $parentPageId, 'title']);
 						}
 						break;
 					case 'icontitle' :
 						if ($this->getData(['page', $childKey, 'iconUrl']) != "") {
-						$items .= '<img alt="'.$this->getData(['page', $parentPageId, 'title']).'" src="'. helper::baseUrl(false) .'site/file/source/'.$this->getData(['page', $childKey, 'iconUrl']).'" data-tippy-content="';
+						$items .= '<img alt="'.$this->getData(['page', $parentPageId, 'title']).'" src="'. helper::baseUrl(false) .self::FILE_DIR.'source/'.$this->getData(['page', $childKey, 'iconUrl']).'" data-tippy-content="';
 						$items .= $this->getData(['page', $childKey, 'title']).'"/>';
 						} else {
 						$items .= $this->getData(['page', $childKey, 'title']);
@@ -2057,7 +2061,7 @@ class layout extends common {
 						break;
 					case 'icontext' :
 						if ($this->getData(['page', $childKey, 'iconUrl']) != "") {
-						$items .= '<img alt="'.$this->getData(['page', $parentPageId, 'title']).'" src="'. helper::baseUrl(false) .'site/file/source/'.$this->getData(['page', $childKey, 'iconUrl']).'" />';
+						$items .= '<img alt="'.$this->getData(['page', $parentPageId, 'title']).'" src="'. helper::baseUrl(false) .self::FILE_DIR.'source/'.$this->getData(['page', $childKey, 'iconUrl']).'" />';
 						$items .= $this->getData(['page', $childKey, 'title']);
 						} else {
 						$items .= $this->getData(['page', $childKey, 'title']);
@@ -2220,7 +2224,7 @@ class layout extends common {
 	 * Affiche la meta image (site screenshot)
 	 */
 	public function showMetaImage() {
-		echo '<meta property="og:image" content="' . helper::baseUrl() .'site/file/source/screenshot.png" />';
+		echo '<meta property="og:image" content="' . helper::baseUrl() .self::FILE_DIR.'source/screenshot.png" />';
 	}
 
 
@@ -2320,7 +2324,7 @@ class layout extends common {
 			$rightItems = '';
 			if($this->getUser('group') >= self::GROUP_MODERATOR) {
 
-				$rightItems .= '<li><a href="' . helper::baseUrl(false) . 'core/vendor/filemanager/dialog.php?type=0&akey=' . md5_file('site/data/core.json') .'" data-tippy-content="Gérer les fichiers" data-lity>' . template::ico('folder') . '</a></li>';
+				$rightItems .= '<li><a href="' . helper::baseUrl(false) . 'core/vendor/filemanager/dialog.php?type=0&akey=' . md5_file(self::DATA_DIR.'core.json') .'" data-tippy-content="Gérer les fichiers" data-lity>' . template::ico('folder') . '</a></li>';
 			}
 			if($this->getUser('group') >= self::GROUP_ADMIN) {
 				$rightItems .= '<li><a href="' . helper::baseUrl() . 'user" data-tippy-content="Configurer les utilisateurs">' . template::ico('users') . '</a></li>';
@@ -2412,7 +2416,7 @@ class layout extends common {
 			$this->getUser('password') === $this->getInput('ZWII_USER_PASSWORD')
 			AND $this->getUser('group') >= self::GROUP_MODERATOR
 		) {
-			$vars .= 'var privateKey = ' . json_encode(md5_file('site/data/core.json')) . ';';
+			$vars .= 'var privateKey = ' . json_encode(md5_file(self::DATA_DIR.'core.json')) . ';';
 		}
 		echo '<script>' . helper::minifyJs($vars) . '</script>';
 		// Librairies
@@ -2700,7 +2704,8 @@ class template {
 					'?relative_url=1' .
 					'&field_id=' . $attributes['id'] .
 					'&type=' . $attributes['type'] .
-					'&akey=' . md5_file('site/data/core.json') .
+					//'&akey=' . md5_file('site/data/'.'core.json') .
+					'&akey=' . md5_file(core::DATA_DIR.'core.json') .
 					($attributes['extensions'] ? '&extensions=' . $attributes['extensions'] : '')
 				. '"
 				class="inputFile %s %s"
diff --git a/core/layout/blank.php b/core/layout/blank.php
index 5cda91ce..60544b37 100755
--- a/core/layout/blank.php
+++ b/core/layout/blank.php
@@ -12,8 +12,8 @@
 	<?php $layout->showVendor(); ?>
 	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>core/layout/common.css">
 	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>core/layout/blank.css">
-	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>site/data/theme.css?<?php echo md5_file('site/data/theme.css'); ?>">
-	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>site/data/custom.css?<?php echo md5_file('site/data/custom.css'); ?>"></head>
+	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>site/data/theme.css?<?php echo md5_file(self::DATA_DIR.'theme.css'); ?>">
+	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>site/data/custom.css?<?php echo md5_file(self::DATA_DIR.'custom.css'); ?>"></head>
 <body>
 <?php $layout->showStyle(); ?>
 <?php $layout->showContent(); ?>
diff --git a/core/layout/light.php b/core/layout/light.php
index ad4776f8..5dde1966 100755
--- a/core/layout/light.php
+++ b/core/layout/light.php
@@ -12,8 +12,8 @@
 	<?php $layout->showVendor(); ?>
 	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>core/layout/common.css">
 	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>core/layout/light.css">
-	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>site/data/theme.css?<?php echo md5_file('site/data/theme.css'); ?>">
-	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>site/data/custom.css?<?php echo md5_file('site/data/custom.css'); ?>">
+	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>site/data/theme.css?<?php echo md5_file(self::DATA_DIR.'theme.css'); ?>">
+	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>site/data/custom.css?<?php echo md5_file(self::DATA_DIR.'custom.css'); ?>">
 </head>
 <body>
 <?php $layout->showStyle(); ?>
diff --git a/core/layout/main.php b/core/layout/main.php
index 4d9d7a8f..2ac89899 100755
--- a/core/layout/main.php
+++ b/core/layout/main.php
@@ -12,8 +12,8 @@
 	<?php $layout->showVendor(); ?>
 	<?php $layout->showAnalytics(); ?>	
 	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>core/layout/common.css">
-	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>site/data/theme.css?<?php echo md5_file('site/data/theme.css'); ?>">
-	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>site/data/custom.css?<?php echo md5_file('site/data/custom.css'); ?>">
+	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>site/data/theme.css?<?php echo md5_file(self::DATA_DIR.'theme.css'); ?>">
+	<link rel="stylesheet" href="<?php echo helper::baseUrl(false); ?>site/data/custom.css?<?php echo md5_file(self::DATA_DIR.'custom.css'); ?>">
 </head>
 <body>
 <?php $layout->showStyle(); ?>
diff --git a/core/module/config/config.php b/core/module/config/config.php
index 17608d03..a976c4ec 100755
--- a/core/module/config/config.php
+++ b/core/module/config/config.php
@@ -203,7 +203,7 @@ class config extends common {
 		// Creation du ZIP
 		$fileName = date('Y-m-d-h-i-s', time()) . '.zip';
 		$zip = new ZipArchive();
-		if($zip->open('site/tmp/' . $fileName, ZipArchive::CREATE) === TRUE){
+		if($zip->open(self::TEMP_DIR . $fileName, ZipArchive::CREATE) === TRUE){
 			foreach(configHelper::scanDir('site/') as $file) {
 				$zip->addFile($file);
 			}
@@ -212,13 +212,13 @@ class config extends common {
 		// Téléchargement du ZIP
 		header('Content-Transfer-Encoding: binary');
 		header('Content-Disposition: attachment; filename="' . $fileName . '"');
-		header('Content-Length: ' . filesize('site/tmp/' . $fileName));
-		readfile('site/tmp/' . $fileName);
+		header('Content-Length: ' . filesize(self::TEMP_DIR . $fileName));
+		readfile(self::TEMP_DIR . $fileName);
 		// Valeurs en sortie
 		$this->addOutput([
 			'display' => self::DISPLAY_RAW
 		]);
-		unlink('site/tmp/' . $fileName);
+		unlink(self::TEMP_DIR . $fileName);
 	}
 
 	/**
@@ -237,7 +237,7 @@ class config extends common {
 		$screenshot = str_replace(array('_','-'),array('/','+'),$screenshot);
 		$data = 'data:image/jpeg;base64,'.$screenshot;
 		$data = base64_decode(preg_replace('#^data:image/\w+;base64,#i', '', $data));			
-		file_put_contents( 'site/file/source/screenshot.png',$data);
+		file_put_contents( self::FILE_DIR.'source/screenshot.png',$data);
 
 		// Valeurs en sortie
 		$this->addOutput([
@@ -323,7 +323,7 @@ class config extends common {
 			]);
 		}
 		// Initialisation du screen 
-		if (!file_exists('site/file/source/screenshot.png')) {
+		if (!file_exists(self::FILE_DIR.'source/screenshot.png')) {
 			$this->configMetaImage();
 		}
 		// Valeurs en sortie
diff --git a/core/module/config/view/index/index.php b/core/module/config/view/index/index.php
index c2099a89..a15b4f19 100755
--- a/core/module/config/view/index/index.php
+++ b/core/module/config/view/index/index.php
@@ -63,7 +63,7 @@
 				<h4>Copie d'écran OpenGraph</h4>
 				<div class="row">
 					<div class="col8 offset2">
-						<img src='<?php echo helper::baseUrl(false) . 'site/file/source/screenshot.png';?>' />
+						<img src='<?php echo helper::baseUrl(false) . self::FILE_DIR.'source/screenshot.png';?>' />
 					</div>
 				</div>
 				<div class="row">				
diff --git a/core/module/install/install.php b/core/module/install/install.php
index c4933652..1199e5f6 100755
--- a/core/module/install/install.php
+++ b/core/module/install/install.php
@@ -62,9 +62,9 @@ class install extends common {
 					// Ajouter ici la liste des pages privées qui ne sont pas vues lors de l'installation.
 					$this->deleteData(['page', 'privee']);
 					// Effacer les fichiers par défaut
-					if (is_dir('site/file/source/galerie')) {
-						$this->removeAll('site/file/source/galerie');
-						$this->removeAll('site/file/thumb/galerie');
+					if (is_dir(self::FILE_DIR.'source/galerie')) {
+						$this->removeAll(self::FILE_DIR.'source/galerie');
+						$this->removeAll(self::FILE_DIR.'thumb/galerie');
 					}
 				} else {
 					$this->setData(['module', 'blog', 'mon-premier-article', 'userId', $userId]);
@@ -123,14 +123,14 @@ class install extends common {
 			case 1:
 				$success = true;
 				// Copie du fichier de données
-				copy('site/data/core.json', 'site/backup/' . date('Y-m-d', time()) . '-core-update.json');
-				copy('site/data/theme.json', 'site/backup/' . date('Y-m-d', time()) . '-theme-update.json');
+				copy(self::DATA_DIR.'core.json', self::BACKUP_DIR . date('Y-m-d', time()) . '-core-update.json');
+				copy(self::DATA_DIR.'theme.json', self::BACKUP_DIR . date('Y-m-d', time()) . '-theme-update.json');
 				// Nettoyage des fichiers temporaires
-				if(file_exists('site/tmp/update.tar.gz')) {
-					$success = unlink('site/tmp/update.tar.gz');
+				if(file_exists(self::TEMP_DIR.'update.tar.gz')) {
+					$success = unlink(self::TEMP_DIR.'update.tar.gz');
 				}
-				if(file_exists('site/tmp/update.tar')) {
-					$success = unlink('site/tmp/update.tar');
+				if(file_exists(self::TEMP_DIR.'update.tar')) {
+					$success = unlink(self::TEMP_DIR.'update.tar');
 				}
 				// Valeurs en sortie
 				$this->addOutput([
@@ -144,7 +144,7 @@ class install extends common {
 			// Téléchargement
 			case 2:
 				// Téléchargement depuis le serveur de Zwii
-				$success = (file_put_contents('site/tmp/update.tar.gz', file_get_contents('https://zwiicms.com/update/update.tar.gz')) !== false);
+				$success = (file_put_contents(self::TEMP_DIR.'update.tar.gz', file_get_contents('https://zwiicms.com/update/update.tar.gz')) !== false);
 				// Valeurs en sortie
 				$this->addOutput([
 					'display' => self::DISPLAY_JSON,
@@ -162,7 +162,7 @@ class install extends common {
 				// Décompression et installation
 				try {
 					// Décompression dans le dossier de fichier temporaires
-					$pharData = new PharData('site/tmp/update.tar.gz');
+					$pharData = new PharData(self::TEMP_DIR.'update.tar.gz');
 					$pharData->decompress();
 					// Installation
 					$pharData->extractTo(__DIR__ . '/../../../', null, true);
@@ -170,11 +170,11 @@ class install extends common {
 					$success = $e->getMessage();
 				}
 				// Netooyage du dossier
-				if(file_exists('site/tmp/update.tar.gz')) {
-					unlink('site/tmp/update.tar.gz');
+				if(file_exists(self::TEMP_DIR.'update.tar.gz')) {
+					unlink(self::TEMP_DIR.'update.tar.gz');
 				}
-				if(file_exists('site/tmp/update.tar')) {
-					unlink('site/tmp/update.tar');
+				if(file_exists(self::TEMP_DIR.'update.tar')) {
+					unlink(self::TEMP_DIR.'update.tar');
 				}
 				// Valeurs en sortie
 				$this->addOutput([
diff --git a/core/module/install/ressource/defaultdata.php b/core/module/install/ressource/defaultdata.php
index aa1c5ac0..c93fb094 100644
--- a/core/module/install/ressource/defaultdata.php
+++ b/core/module/install/ressource/defaultdata.php
@@ -356,7 +356,7 @@ class install extends common {
 				'beaux-paysages' => [
 					'config' => [
 						'name' => 'Beaux paysages',
-						'directory' => 'site/file/source/galerie/landscape'
+						'directory' => self::FILE_DIR.'source/galerie/landscape'
 					],
 					'legend' => [
 						'desert.jpg' => 'Un désert',
@@ -367,7 +367,7 @@ class install extends common {
 				'espace' => [
 					'config' => [
 						'name' => 'Espace',
-						'directory' => 'site/file/source/galerie/space'
+						'directory' => self::FILE_DIR.'source/galerie/space'
 					],
 					'legend' => [
 						'earth.jpg' => 'La Terre et la Lune',
diff --git a/core/module/page/view/edit/edit.php b/core/module/page/view/edit/edit.php
index bc4b933d..3efc44c4 100755
--- a/core/module/page/view/edit/edit.php
+++ b/core/module/page/view/edit/edit.php
@@ -176,7 +176,7 @@ echo template::formOpen('pageEditForm'); ?>
 	<div class="row">
 		<div class="col12" id="pageEditMenuSpecial">
 			<div class="block">
-			<h4>Options d'emplacement avancées </h4>	
+			<h4>Options d'emplacement avancées</h4>	
 				<div class="row">
 					<div class="col12">
 					<?php echo template::checkbox('pageEditHideMenuChildren', true, 'Masquer les pages enfants de cette page dans le menu horizontal', [
diff --git a/core/module/theme/theme.php b/core/module/theme/theme.php
index d68f689b..9d524052 100755
--- a/core/module/theme/theme.php
+++ b/core/module/theme/theme.php
@@ -216,7 +216,7 @@ class theme extends common {
 		// Soumission du formulaire
 		if($this->isPost()) {
 			// Enregistre le CSS
-			file_put_contents('site/data/custom.css', $this->getInput('themeAdvancedCss', null));
+			file_put_contents(self::DATA_DIR.'custom.css', $this->getInput('themeAdvancedCss', null));
 			// Valeurs en sortie
 			$this->addOutput([
 				'notification' => 'Modifications enregistrées',
@@ -432,7 +432,7 @@ class theme extends common {
 	 */
 	public function reset() {
 		// Supprime le fichier de personnalisation avancée
-		unlink('site/data/custom.css');
+		unlink(self::DATA_DIR.'custom.css');
 		// Valeurs en sortie
 		$this->addOutput([
 			'notification' => 'Personnalisation avancée réinitialisée',
@@ -492,7 +492,7 @@ class theme extends common {
 			$zipFilename =	$this->getInput('themeManageImport', helper::FILTER_STRING_SHORT, true);
 
 			$zip = new ZipArchive();
-			if ($zip->open('site/file/source/'.$zipFilename) === TRUE) {
+			if ($zip->open(self::FILE_DIR.'source/'.$zipFilename) === TRUE) {
 				$zip->extractTo('.');
 				$zip->close();
 			// Valeurs en sortie
@@ -527,10 +527,10 @@ class theme extends common {
 			header('Content-Type: application/octet-stream');
 			header('Content-Transfer-Encoding: binary');
 			header('Content-Disposition: attachment; filename="' . $zipFilename . '"');
-			header('Content-Length: ' . filesize('site/tmp/' . $zipFilename));
-			readfile('site/tmp/' . $zipFilename);
+			header('Content-Length: ' . filesize(self::TEMP_DIR . $zipFilename));
+			readfile(self::TEMP_DIR . $zipFilename);
 			// Nettoyage du dossier
-			unlink ('site/tmp/' . $zipFilename);
+			unlink (self::TEMP_DIR . $zipFilename);
 			die();
 	}
 
@@ -541,10 +541,10 @@ class theme extends common {
 		// Make zip
 		$zipFilename = $this->makezip();
 		// Téléchargement du ZIP
-		mkdir('site/file/source/theme');
-		copy ('site/tmp/' . $zipFilename , 'site/file/source/theme/' . $zipFilename);
+		mkdir(self::FILE_DIR.'source/theme');
+		copy (self::TEMP_DIR . $zipFilename , self::FILE_DIR.'source/theme/' . $zipFilename);
 		// Nettoyage du dossier
-		unlink ('site/tmp/' . $zipFilename);
+		unlink (self::TEMP_DIR . $zipFilename);
 		// Valeurs en sortie
 		$this->addOutput([
 			'notification' => 'Archive <b>'.$zipFilename.'</b> sauvegardée dans fichiers',
@@ -561,18 +561,18 @@ class theme extends common {
 		// $zipFilename  =  'theme-'.date('dmY').'-'.date('hm').'-'.rand(10,99).'.zip';
 		$zipFilename  =  'theme  '.date('d m Y').'  '.date('H i s ').'.zip';
 		$zip = new ZipArchive();
-		if ($zip->open('site/tmp/' . $zipFilename, ZipArchive::CREATE | ZipArchive::OVERWRITE ) === TRUE) {
-			$zip->addFile('site/data/theme.json','site/data/theme.json');
-			$zip->addFile('site/data/theme.json','site/data/theme.css');
-			$zip->addFile('site/data/theme.json','site/data/custom.css');			
+		if ($zip->open(self::TEMP_DIR . $zipFilename, ZipArchive::CREATE | ZipArchive::OVERWRITE ) === TRUE) {
+			$zip->addFile(self::DATA_DIR.'theme.json',self::DATA_DIR.'theme.json');
+			$zip->addFile(self::DATA_DIR.'theme.json',self::DATA_DIR.'theme.css');
+			$zip->addFile(self::DATA_DIR.'theme.json',self::DATA_DIR.'custom.css');			
 			if ($this->getData(['theme','body','image']) !== '' ) {
-			$zip->addFile('site/file/source/'.$this->getData(['theme','body','image']),
-						'site/file/source/'.$this->getData(['theme','body','image'])
+			$zip->addFile(self::FILE_DIR.'source/'.$this->getData(['theme','body','image']),
+						self::FILE_DIR.'source/'.$this->getData(['theme','body','image'])
 						);
 			}
 			if ($this->getData(['theme','header','image']) !== '' ) {			
-			$zip->addFile('site/file/source/'.$this->getData(['theme','header','image']),
-						  'site/file/source/'.$this->getData(['theme','header','image'])
+			$zip->addFile(self::FILE_DIR.'source/'.$this->getData(['theme','header','image']),
+						  self::FILE_DIR.'source/'.$this->getData(['theme','header','image'])
 						);
 			}
 			$ret = $zip->close();
diff --git a/core/module/theme/view/advanced/advanced.php b/core/module/theme/view/advanced/advanced.php
index bec93378..613164cb 100755
--- a/core/module/theme/view/advanced/advanced.php
+++ b/core/module/theme/view/advanced/advanced.php
@@ -23,7 +23,7 @@
 	<div class="row">
 		<div class="col12">
 			<?php echo template::textarea('themeAdvancedCss', [
-				'value' => file_get_contents('site/data/custom.css'),
+				'value' => file_get_contents(self::DATA_DIR.'custom.css'),
 				'class' => 'editorCss'
 			]); ?>
 		</div>
diff --git a/core/module/theme/view/body/body.php b/core/module/theme/view/body/body.php
index 16695055..47ada5e1 100755
--- a/core/module/theme/view/body/body.php
+++ b/core/module/theme/view/body/body.php
@@ -28,7 +28,7 @@
 			<div class="block">
 				<h4>Image</h4>
 				<?php
-				$imageFile = file_exists('site/file/source/'.$this->getData(['theme', 'body', 'image'])) ? $this->getData(['theme', 'body', 'image']) : "";
+				$imageFile = file_exists(self::FILE_DIR.'source/'.$this->getData(['theme', 'body', 'image'])) ? $this->getData(['theme', 'body', 'image']) : "";
 				echo template::file('themeBodyImage', [
 					'label' => 'Fond',
 					'type' => 1,
diff --git a/core/module/theme/view/header/header.php b/core/module/theme/view/header/header.php
index 1ae91233..2c6ecd6b 100755
--- a/core/module/theme/view/header/header.php
+++ b/core/module/theme/view/header/header.php
@@ -40,7 +40,7 @@
 			<div class="block">
 				<h4>Image</h4>
 				<?php 
-				$imageFile = file_exists('site/file/source/'.$this->getData(['theme', 'header', 'image'])) ? $this->getData(['theme', 'header', 'image']) : "";
+				$imageFile = file_exists(self::FILE_DIR.'source/'.$this->getData(['theme', 'header', 'image'])) ? $this->getData(['theme', 'header', 'image']) : "";
 				echo template::file('themeHeaderImage', [
 					'label' => 'Fond',
 					'type' => 1,
diff --git a/module/blog/view/article/article.php b/module/blog/view/article/article.php
index cd4f7344..c6f03501 100644
--- a/module/blog/view/article/article.php
+++ b/module/blog/view/article/article.php
@@ -5,8 +5,8 @@
 </div>
 
 	<?php if ($this->getData(['module', $this->getUrl(0), $this->getUrl(1), 'hidePicture']) == false) {
-		// echo '<div id="blogArticlePicture" style="background-image:url(' . helper::baseUrl(false) . 'site/file/source/' . $this->getData(['module', $this->getUrl(0), $this->getUrl(1), 'picture']) . ');"></div>';
-		echo '<div id="blogArticlePicture"><img id="blogArticlePicture" src="' . helper::baseUrl(false) . 'site/file/source/' . $this->getData(['module', $this->getUrl(0), $this->getUrl(1), 'picture']) . '"></div>';
+		// echo '<div id="blogArticlePicture" style="background-image:url(' . helper::baseUrl(false) . self::FILE_DIR.'source/' . $this->getData(['module', $this->getUrl(0), $this->getUrl(1), 'picture']) . ');"></div>';
+		echo '<div id="blogArticlePicture"><img id="blogArticlePicture" src="' . helper::baseUrl(false) . self::FILE_DIR.'source/' . $this->getData(['module', $this->getUrl(0), $this->getUrl(1), 'picture']) . '"></div>';
 	} ?>
 
 <?php echo $this->getData(['module', $this->getUrl(0), $this->getUrl(1), 'content']); ?>
diff --git a/module/blog/view/index/index.php b/module/blog/view/index/index.php
index b8b55e03..9670adb2 100644
--- a/module/blog/view/index/index.php
+++ b/module/blog/view/index/index.php
@@ -5,7 +5,7 @@
 				<div class="row">
 					<div class="col3">
 						<a href="<?php echo helper::baseUrl() . $this->getUrl(0) . '/' . $articleId; ?>" class="blogPicture">
-							<img src="<?php echo helper::baseUrl(false) . 'site/file/thumb/' . $article['picture']; ?>">
+							<img src="<?php echo helper::baseUrl(false) . self::FILE_DIR.'thumb/' . $article['picture']; ?>">
 						</a>
 					</div>
 					<div class="col9">
diff --git a/module/form/form.php b/module/form/form.php
index 659aec56..8713116d 100644
--- a/module/form/form.php
+++ b/module/form/form.php
@@ -178,10 +178,10 @@ class form extends common {
 			$data = $this->getData(['module', $this->getUrl(0), 'data']);
 			if ($data !== []) {
 				$csvfilename = 'data-'.date('dmY').'-'.date('hm').'-'.rand(10,99).'.csv';
-				if (!file_exists('site/file/source/data')) {
-					mkdir('site/file/source/data');
+				if (!file_exists(self::FILE_DIR.'source/data')) {
+					mkdir(self::FILE_DIR.'source/data');
 				}
-				$fp = fopen('site/file/source/data/'.$csvfilename, 'w');
+				$fp = fopen(self::FILE_DIR.'source/data/'.$csvfilename, 'w');
 				fputcsv($fp, array_keys($data[1]), ';','"');
 				foreach ($data as $fields) {
 					fputcsv($fp, $fields, ';','"');
diff --git a/module/gallery/gallery.php b/module/gallery/gallery.php
index e5956541..c36c5844 100644
--- a/module/gallery/gallery.php
+++ b/module/gallery/gallery.php
@@ -130,7 +130,7 @@ class gallery extends common {
 		// Valeurs en sortie
 		$this->addOutput([
 			'display' => self::DISPLAY_JSON,
-			'content' => galleriesHelper::scanDir('site/file/source')
+			'content' => galleriesHelper::scanDir(self::FILE_DIR.'source')
 		]);
 	}