diff --git a/language/en-GB/en-GB.plg_fields_radicalmultifield.ini b/language/en-GB/en-GB.plg_fields_radicalmultifield.ini
index 98221b1..b916742 100644
--- a/language/en-GB/en-GB.plg_fields_radicalmultifield.ini
+++ b/language/en-GB/en-GB.plg_fields_radicalmultifield.ini
@@ -28,6 +28,9 @@ PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZE_LABEL="Enable image resiz
 PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZE_DESC="When the resize is enabled, the images will resize under the specified maximum width and height"
 PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZEMAXWIDTH_LABEL="Maximum width <br /> in pixels"
 PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZEMAXHEIGHT_LABEL="Maximum height <br /> in pixels"
+PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTPREVIEW_LABEL="Generate preview images"
+PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTPREVIEWMAXWIDTH_LABEL="Max width preview <br /> in pixels"
+PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTPREVIEWMAXHEIGHT_LABEL="Max height preview <br /> in pixels"
 PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZEOVERLAY_LABEL="Apply a watermark"
 PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZEOVERLAYFILE_LABEL="Watermark File"
 PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZEOVERLAYPOS_LABEL="Select a position for the sign"
diff --git a/language/ru-RU/ru-RU.plg_fields_radicalmultifield.ini b/language/ru-RU/ru-RU.plg_fields_radicalmultifield.ini
index ed70544..1c077aa 100644
--- a/language/ru-RU/ru-RU.plg_fields_radicalmultifield.ini
+++ b/language/ru-RU/ru-RU.plg_fields_radicalmultifield.ini
@@ -28,6 +28,9 @@ PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZE_LABEL="Подгонять
 PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZE_DESC="При включеном параметре, изображения будут изменять размер под указанные максимальную ширину и высоту в пикселях"
 PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZEMAXWIDTH_LABEL="Максимальная ширина <br /> в пикселях"
 PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZEMAXHEIGHT_LABEL="Максимальная высота <br /> в пикселях"
+PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTPREVIEW_LABEL="Генерация превью картинок"
+PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTPREVIEWMAXWIDTH_LABEL="Максимальная ширина превью <br /> в пикселях"
+PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTPREVIEWMAXHEIGHT_LABEL="Максимальная высота превью <br /> в пикселях"
 PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZEOVERLAY_LABEL="Накладывать водяной знак"
 PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZEOVERLAYFILE_LABEL="Файл водяного знака"
 PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZEOVERLAYPOS_LABEL="Выберите позицию для знака"
diff --git a/params/radicalmultifield.xml b/params/radicalmultifield.xml
index c7e03e4..4fd2aa0 100644
--- a/params/radicalmultifield.xml
+++ b/params/radicalmultifield.xml
@@ -125,6 +125,36 @@
                    showon="filesimportresize:1[AND]filesimport:1"
             />
 
+            <field name="filesimportpreview"
+                   type="radio"
+                   label="PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTPREVIEW_LABEL"
+                   description="PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTPREVIEW_DESC"
+                   required="true"
+                   class="btn-group"
+                   default="0"
+                   showon="filesimport:1">
+                <option value="1">JYES</option>
+                <option value="0">JNO</option>
+            </field>
+
+            <field name="filesimportpreviewmaxwidth"
+                   type="text"
+                   label="PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTPREVIEWMAXWIDTH_LABEL"
+                   required="true"
+                   default="360"
+                   class="input-xlarge"
+                   showon="filesimportpreview:1[AND]filesimport:1"
+            />
+
+            <field name="filesimportpreviewmaxheight"
+                   type="text"
+                   label="PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTPREVIEWMAXHEIGHT_LABEL"
+                   required="true"
+                   default="360"
+                   class="input-xlarge"
+                   showon="filesimportpreview:1[AND]filesimport:1"
+            />
+
             <field name="filesimportrezizeoverlay"
                    type="radio"
                    label="PLG_RADICAL_MULTI_FIELD_FIELD_PARAMS_FILESIMPORTRESIZEOVERLAY_LABEL"
diff --git a/radicalmultifield.php b/radicalmultifield.php
index f146e08..c4480f1 100644
--- a/radicalmultifield.php
+++ b/radicalmultifield.php
@@ -249,7 +249,7 @@ public function onContentPrepareForm(JForm $form, $data)
 			$tmp = explode('_', $type);
 			$type = $tmp[0];
 			$pluginType = $tmp[1];
-			$pathType = JPATH_PLUGINS . '/radicalmultifield/' . $pluginType . '/params';
+			$pathType = JPATH_PLUGINS . DIRECTORY_SEPARATOR . 'radicalmultifield' . DIRECTORY_SEPARATOR . $pluginType . DIRECTORY_SEPARATOR . 'params';
 		}
 		else
 		{
@@ -257,7 +257,7 @@ public function onContentPrepareForm(JForm $form, $data)
 			$pathType = '';
 		}
 
-		$path = JPATH_PLUGINS . '/' . $this->_type . '/' . $this->_name . '/params/' . $type . '.xml';
+		$path = JPATH_PLUGINS . DIRECTORY_SEPARATOR . $this->_type . DIRECTORY_SEPARATOR . $this->_name . DIRECTORY_SEPARATOR . 'params' . DIRECTORY_SEPARATOR . $type . '.xml';
 
 		// Check if params file exists
 		if (!file_exists($path))
@@ -265,14 +265,14 @@ public function onContentPrepareForm(JForm $form, $data)
 			return;
 		}
 
-		JLoader::import('radicalmultifieldhelper', JPATH_ROOT . '/plugins/fields/radicalmultifield');
+		JLoader::register('RadicalmultifieldHelper', JPATH_ROOT . DIRECTORY_SEPARATOR . implode(DIRECTORY_SEPARATOR, ['plugins', 'fields', 'radicalmultifield', 'radicalmultifieldhelper']) . '.php');
 
 		$paramsfield = file_get_contents($path);
 
 		if(!empty($pluginType)) {
 
-			if(file_exists($pathType . '/newparams.xml')) {
-				$newParams = file_get_contents($pathType . '/newparams.xml');
+			if(file_exists($pathType . DIRECTORY_SEPARATOR . 'newparams.xml')) {
+				$newParams = file_get_contents($pathType . DIRECTORY_SEPARATOR . 'newparams.xml');
 				$paramsfield = str_replace('</fieldset>', $newParams . '</fieldset>', $paramsfield);
 			}
 
@@ -325,7 +325,7 @@ public function onContentPrepareForm(JForm $form, $data)
 
 			if(file_exists($pathType))
 			{
-				$paramsfieldValues = file_get_contents($pathType . '/default.xml');
+				$paramsfieldValues = file_get_contents($pathType . DIRECTORY_SEPARATOR . 'default.xml');
 				$paramsfieldValuesXML = new SimpleXMLElement($paramsfieldValues);
 
 				for ($i = 0; $i < count($paramsfieldValuesXML->fields->fieldset->field); $i++)
@@ -392,7 +392,7 @@ public function onAjaxRadicalmultifield()
 	    $admin = $app->isAdmin();
 	    $allow = true;
 
-	    JLoader::register('RadicalmultifieldHelper', JPATH_SITE . '/plugins/fields/radicalmultifield/radicalmultifieldhelper.php');
+	    JLoader::register('RadicalmultifieldHelper', JPATH_ROOT . DIRECTORY_SEPARATOR . implode(DIRECTORY_SEPARATOR, ['plugins', 'fields', 'radicalmultifield', 'radicalmultifieldhelper']) . '.php');
 
 	    $params = RadicalmultifieldHelper::getParams($data['importfield']);
 
@@ -432,10 +432,10 @@ public function onAjaxRadicalmultifield()
     	if($data['type'] === 'get_files')
     	{
     		$exs = explode(',', $params['filesimportexc']);
-    		$directory = ($data['importfieldpath'] ? $data['importfieldpath'] . '/' : '') . preg_replace('/^root/isu', '', $data['directory']);
-		    $directory = str_replace("//", '/', $directory);
+    		$directory = ($data['importfieldpath'] ? $data['importfieldpath'] . DIRECTORY_SEPARATOR : '') . preg_replace('/^root/isu', '', $data['directory']);
+		    $directory = str_replace(DIRECTORY_SEPARATOR . DIRECTORY_SEPARATOR, DIRECTORY_SEPARATOR, $directory);
 		    $filesOutput = [];
-		    $files = Folder::files(JPATH_ROOT . '/' .(string) $directory);
+		    $files = Folder::files(JPATH_ROOT . DIRECTORY_SEPARATOR .(string) $directory);
 		    foreach ($files as $file)
 		    {
 		    	$tmpExs = explode('.', $file);
@@ -503,15 +503,15 @@ public function onAjaxRadicalmultifield()
 
 			        $data['name'] = isset($data['name']) ? $data['name'] : '';
 
-				    $path = JPATH_ROOT . '/' . ($data['importfieldpath'] ? $data['importfieldpath'] . '/' : '') . preg_replace('/^root/isu', '', $data['path']) . '/' . $data['name'];
-				    $path = str_replace("//", '/', $path);
+				    $path = JPATH_ROOT . DIRECTORY_SEPARATOR . ($data['importfieldpath'] ? $data['importfieldpath'] . DIRECTORY_SEPARATOR : '') . preg_replace('/^root/isu', '', $data['path']) . DIRECTORY_SEPARATOR . $data['name'];
+				    $path = str_replace(DIRECTORY_SEPARATOR . DIRECTORY_SEPARATOR, DIRECTORY_SEPARATOR, $path);
 
 				    if (!file_exists($path))
 				    {
 					    Folder::create($path);
 				    }
 
-				    if (File::upload($file['tmp_name'], $path . "/" . $uploadedFileName))
+				    if (File::upload($file['tmp_name'], $path . DIRECTORY_SEPARATOR . $uploadedFileName))
 				    {
 
 				    	if(in_array($type, ['jpg', 'gif', 'png', 'jpeg', 'jpg', 'webp']))
@@ -519,9 +519,9 @@ public function onAjaxRadicalmultifield()
 						    if((int)$params['filesimportresize'])
 						    {
 
-							    JLoader::registerNamespace('Gumlet', JPATH_SITE . '/' . implode(DIRECTORY_SEPARATOR , ['plugins', 'fields', 'radicalmultifield', 'libs', 'gumlet', 'lib']));
+							    JLoader::registerNamespace('Gumlet', JPATH_SITE . DIRECTORY_SEPARATOR . implode(DIRECTORY_SEPARATOR , ['plugins', 'fields', 'radicalmultifield', 'libs', 'gumlet', 'lib']));
 
-							    $image = new ImageResize($path . "/" . $uploadedFileName);
+							    $image = new ImageResize($path . DIRECTORY_SEPARATOR . $uploadedFileName);
 
 							    $maxWidth = (int)$params['filesimportrezizemaxwidth'];
 							    $maxHeight = (int)$params['filesimportrezizemaxheight'];
@@ -533,7 +533,7 @@ public function onAjaxRadicalmultifield()
 							    if((int)$params['filesimportrezizeoverlay'])
 							    {
 
-								    $file = JPATH_SITE . '/' . $params['filesimportrezizeoverlayfile'];
+								    $file = JPATH_SITE . DIRECTORY_SEPARATOR . $params['filesimportrezizeoverlayfile'];
 								    $position = $params['filesimportrezizeoverlaypos'];
 								    $padding = $params['filesimportrezizeoverlaypadding'];
 
@@ -618,7 +618,12 @@ public function onAjaxRadicalmultifield()
 
 							    }
 
-							    $image->save($path . "/" . $uploadedFileName);
+							    $image->save($path . DIRECTORY_SEPARATOR . $uploadedFileName);
+
+							    if((int)$params['filesimportpreview'])
+							    {
+								    RadicalmultifieldHelper::generateThumb($params, $path . DIRECTORY_SEPARATOR . $uploadedFileName);
+							    }
 
 						    }
 					    }
@@ -640,11 +645,11 @@ public function onAjaxRadicalmultifield()
 	    {
 		    $lang = Factory::getLanguage();
 	    	$data['name'] = JFILE::makeSafe($lang->transliterate($data['name']));
-    		$path = JPATH_ROOT . '/' . ($data['importfieldpath'] ? $data['importfieldpath'] . '/' : '') . preg_replace('/^root/isu', '', $data['path']) . '/' . $data['name'];
-		    $path = str_replace("//", '/', $path);
+    		$path = JPATH_ROOT . DIRECTORY_SEPARATOR . ($data['importfieldpath'] ? $data['importfieldpath'] . DIRECTORY_SEPARATOR : '') . preg_replace('/^root/isu', '', $data['path']) . DIRECTORY_SEPARATOR . $data['name'];
+		    $path = str_replace(DIRECTORY_SEPARATOR . DIRECTORY_SEPARATOR, DIRECTORY_SEPARATOR, $path);
     		Folder::create($path);
 
-		    JLoader::register('FormFieldRadicalmultifieldtreecatalog', JPATH_ROOT . '/plugins/fields/radicalmultifield/elements/radicalmultifieldtreecatalog.php');
+		    JLoader::register('FormFieldRadicalmultifieldtreecatalog', JPATH_ROOT . DIRECTORY_SEPARATOR . implode(DIRECTORY_SEPARATOR, ['plugins', 'fields', 'radicalmultifield', 'elements', 'radicalmultifieldtreecatalog']) . '.php');
 		    $treeCatalog = new FormFieldRadicalmultifieldtreecatalog;
 		    $paramsForField = [
 		    	'name' => 'select-directory',
@@ -656,8 +661,7 @@ public function onAjaxRadicalmultifield()
 		    	'showroot' => 'true',
 		    ];
 
-		    $dataAttributes = array_map(function($value, $key)
-		    {
+		    $dataAttributes = array_map(function($value, $key) {
 			    return $key . '="' . $value . '"';
 		    }, array_values($paramsForField), array_keys($paramsForField));
 
diff --git a/radicalmultifield.xml b/radicalmultifield.xml
index 5a8515b..125a774 100644
--- a/radicalmultifield.xml
+++ b/radicalmultifield.xml
@@ -7,7 +7,7 @@
 	<authorUrl>https://delo-design.ru</authorUrl>
 	<copyright>Copyright (C) 2018 "Delo Design". All rights reserved.</copyright>
 	<license>GNU General Public License version 2 or later; see LICENSE.txt</license>
-	<version>2.0</version>
+	<version>2.1</version>
 	<description>PLG_RADICAL_MULTI_FIELD_XML_DESCRIPTION</description>
 
 	<scriptfile>script.php</scriptfile>
diff --git a/radicalmultifieldhelper.php b/radicalmultifieldhelper.php
index c060388..9baf631 100644
--- a/radicalmultifieldhelper.php
+++ b/radicalmultifieldhelper.php
@@ -2,6 +2,7 @@
 
 use Joomla\CMS\Factory;
 use Joomla\Filesystem\Folder;
+use Gumlet\ImageResize;
 
 
 defined('_JEXEC') or die;
@@ -277,7 +278,8 @@ public static function check($field_id, $item_id, $data = [], $column_find_all =
             foreach ($item as $keyRow => $row)
             {
 
-                if($column_find_all) {
+                if($column_find_all)
+                {
 
                     if(!isset($data[$keyRow]) || ((string)$row !== (string)$data[$keyRow]))
                     {
@@ -285,7 +287,9 @@ public static function check($field_id, $item_id, $data = [], $column_find_all =
                         break;
                     }
 
-                } else {
+                }
+                else
+                {
 
                     if(isset($data[$keyRow]) && ((string)$row == (string)$data[$keyRow]))
                     {
@@ -380,4 +384,88 @@ public static function loadClassExtendField($path)
 		return $fileListsName;
 	}
 
+
+	/**
+	 * @param $fieldOrParams
+	 * @param $source
+	 *
+	 * @return mixed|string
+	 */
+	public static function generateThumb(&$fieldOrParams, $source)
+	{
+		$source = str_replace(JPATH_ROOT . DIRECTORY_SEPARATOR, '', $source);
+		$paths = explode(DIRECTORY_SEPARATOR, $source);
+		$file = array_pop($paths);
+		$fileSplit = explode('.', $file);
+		$fileExt = array_pop($fileSplit);
+		$extAccept = ['jpg', 'jpeg', 'png', 'gif'];
+
+		if(!in_array($fileExt, $extAccept))
+		{
+			return $file;
+		}
+
+		$pathThumb = implode(DIRECTORY_SEPARATOR, array_merge($paths, ['_thumb']));
+		$pathFileThumb = implode(DIRECTORY_SEPARATOR, array_merge($paths, ['_thumb'])) . DIRECTORY_SEPARATOR . $file;
+		$fullPathThumb =  JPATH_ROOT . DIRECTORY_SEPARATOR . $pathThumb . DIRECTORY_SEPARATOR . $file;
+
+		//если есть проевью, то отдаем ссылку на файл
+		if(file_exists($fullPathThumb))
+		{
+			return $pathFileThumb;
+		}
+
+		//если нет, генерируем превью
+
+		//проверяем создан ли каталог для превью
+		if(!file_exists(JPATH_ROOT . DIRECTORY_SEPARATOR . $pathThumb))
+		{
+			//создаем каталог
+			Folder::create(JPATH_ROOT . DIRECTORY_SEPARATOR . $pathThumb);
+		}
+
+		//подгружаем библиотеку для фото
+		JLoader::registerNamespace('Gumlet', JPATH_SITE . DIRECTORY_SEPARATOR . implode(DIRECTORY_SEPARATOR , ['plugins', 'fields', 'radicalmultifield', 'libs', 'gumlet', 'lib']));
+
+		$params = [];
+
+		if(is_object($fieldOrParams))
+		{
+			if(!isset($fieldOrParams->name))
+			{
+				return $source;
+			}
+
+			//подгружаем параметры поля
+			$params = self::getParams($fieldOrParams->name);
+
+		}
+
+		if(is_array($fieldOrParams))
+		{
+			$params = $fieldOrParams;
+		}
+
+
+		if(!isset($params['filesimportpreviewmaxwidth']) || !isset($params['filesimportpreviewmaxheight']))
+		{
+			return $source;
+		}
+
+		copy(JPATH_ROOT . DIRECTORY_SEPARATOR . $source, $fullPathThumb);
+		$image = new ImageResize($fullPathThumb);
+
+		$maxWidth = (int)$params['filesimportpreviewmaxwidth'];
+		$maxHeight = (int)$params['filesimportpreviewmaxheight'];
+
+		$image->resizeToBestFit($maxWidth, $maxHeight);
+		$image->save($fullPathThumb);
+		unset($image);
+
+		return $pathFileThumb;
+
+	}
+
+
+
 }
\ No newline at end of file
diff --git a/tmpl/galleryforuikit2.php b/tmpl/galleryforuikit2.php
index e3df5e0..bb42d6e 100644
--- a/tmpl/galleryforuikit2.php
+++ b/tmpl/galleryforuikit2.php
@@ -18,6 +18,8 @@
 $values = json_decode($field->value, JSON_OBJECT_AS_ARRAY);
 $listtype = $this->getListTypeFromField($field);
 
+jimport('radicalmultifieldhelper', JPATH_ROOT . DIRECTORY_SEPARATOR . implode(DIRECTORY_SEPARATOR, ['plugins', 'fields', 'radicalmultifield'])); //подключаем хелпер
+
 ?>
 
 
@@ -26,7 +28,7 @@
 
         <div>
             <a href="<?= $row['image']?>" data-uk-lightbox="{group:'group-fields-<?= $field->id ?>'}" title="<?= $row['alt'] ?>">
-                <img src="<?= $row['image']?>" alt="<?= $row['alt'] ?>"/>
+                <img src="<?= RadicalmultifieldHelper::generateThumb($field, $row['image'])?>" alt="<?= $row['alt'] ?>"/>
             </a>
         </div>
 
diff --git a/tmpl/galleryforuikit3.php b/tmpl/galleryforuikit3.php
index 2c0240e..aa328c3 100644
--- a/tmpl/galleryforuikit3.php
+++ b/tmpl/galleryforuikit3.php
@@ -18,6 +18,8 @@
 $values = json_decode($field->value, JSON_OBJECT_AS_ARRAY);
 $listtype = $this->getListTypeFromField($field);
 
+jimport('radicalmultifieldhelper', JPATH_ROOT . DIRECTORY_SEPARATOR . implode(DIRECTORY_SEPARATOR, ['plugins', 'fields', 'radicalmultifield'])); //подключаем хелпер
+
 ?>
 
 <div class="uk-child-width-1-5@m" uk-grid uk-height-match="img" uk-lightbox="animation: slide">
@@ -25,7 +27,7 @@
 
         <div>
             <a class="uk-inline" href="<?= $row['image'] ?>" data-caption="<?= $row['alt'] ?>">
-                <img src="<?= $row['image']?>" alt="<?= $row['alt'] ?>"/>
+                <img src="<?= RadicalmultifieldHelper::generateThumb($field, $row['image'])?>" alt="<?= $row['alt'] ?>"/>
             </a>
         </div>