diff --git a/src/MadeYourDay/Contao/Module/Slider.php b/src/MadeYourDay/Contao/Module/Slider.php
index 583a635..c9c81fa 100644
--- a/src/MadeYourDay/Contao/Module/Slider.php
+++ b/src/MadeYourDay/Contao/Module/Slider.php
@@ -92,7 +92,7 @@ protected function compile()
 
 				$file = new \File($files->path, true);
 
-				if (!$file->isGdImage) {
+				if (!$file->isGdImage && !$file->isImage) {
 					continue;
 				}
 
@@ -248,7 +248,7 @@ protected function parseSlides($objSlides)
 					: \FilesModel::findByUuid($slide['singleSRC'])
 				) &&
 				($fileObject = new \File($file->path, true)) &&
-				$fileObject->isGdImage
+				($fileObject->isGdImage || $fileObject->isImage)
 			) {
 				$meta = $this->getMetaData($file->meta, $objPage->language);
 				$slide['image'] = new \stdClass;
@@ -264,6 +264,7 @@ protected function parseSlides($objSlides)
 			}
 
 			if ($slide['videoURL'] && empty($slide['image'])) {
+				$slide['image'] = new \stdClass;
 				if (preg_match(
 					'(^
 						https?://  # http or https
@@ -277,17 +278,19 @@ protected function parseSlides($objSlides)
 					html_entity_decode($slide['videoURL']), $matches)
 				) {
 					$video = $matches[1];
-					$slide['image'] = new \stdClass;
 					$slide['image']->src = '//img.youtube.com/vi/' . $video . '/0.jpg';
-					$slide['image']->imgSize = '';
-					$slide['image']->alt = '';
 				}
 				else {
-					$slide['image'] = new \stdClass;
 					// Grey dummy image
 					$slide['image']->src = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAJCAMAAAAM9FwAAAAAA1BMVEXGxsbd/8BlAAAAFUlEQVR42s3BAQEAAACAkP6vdiO6AgCZAAG/wrlvAAAAAElFTkSuQmCC';
-					$slide['image']->imgSize = '';
-					$slide['image']->alt = '';
+				}
+				$slide['image']->imgSize = '';
+				$slide['image']->alt = '';
+				if (version_compare(VERSION, '3.4', '>=')) {
+					$slide['image']->picture = array(
+						'img' => array('src' => $slide['image']->src, 'srcset' => $slide['image']->src),
+						'sources' => array(),
+					);
 				}
 			}
 
@@ -298,7 +301,7 @@ protected function parseSlides($objSlides)
 					: \FilesModel::findByUuid($slide['backgroundImage'])
 				) &&
 				($fileObject = new \File($file->path, true)) &&
-				$fileObject->isGdImage
+				($fileObject->isGdImage || $fileObject->isImage)
 			) {
 				$meta = $this->getMetaData($file->meta, $objPage->language);
 				$slide['backgroundImage'] = new \stdClass;
diff --git a/templates/rsts_default.html5 b/templates/rsts_default.html5
index 25f4f37..2c01102 100644
--- a/templates/rsts_default.html5
+++ b/templates/rsts_default.html5
@@ -7,7 +7,11 @@
 	<?php foreach ($this->images as $image): ?>
 
 		<div data-rsts-type="image">
-			<img src="<?php echo $image->src ?>"<?php echo $image->imgSize ?> alt="<?php echo $image->alt ?>">
+			<?php if (version_compare(VERSION, '3.4', '<')): ?>
+				<img src="<?php echo $image->src ?>"<?php echo $image->imgSize ?> alt="<?php echo $image->alt ?>">
+			<?php else: ?>
+				<?php $this->insert('picture_default', $image->picture) ?>
+			<?php endif ?>
 			<?php if ($image->href): ?>
 				<a href="<?php echo $image->href ?>"><?php echo $GLOBALS['TL_LANG']['MSC']['more'] ?></a>
 			<?php endif ?>
@@ -46,12 +50,28 @@
 		<?php if (! empty($slide['videoURL'])): ?>
 
 			<div data-rsts-type="video" data-rsts-video="<?php echo $slide['videoURL'] ?>" <?php echo $attributes ?>>
-				<img src="<?php echo $slide['image']->src ?>" alt="<?php echo $slide['image']->alt ?>" <?php echo $imageAttributes ?>>
+				<?php if (version_compare(VERSION, '3.4', '<')): ?>
+					<img src="<?php echo $slide['image']->src ?>"<?php echo $slide['image']->imgSize ?> alt="<?php echo $slide['image']->alt ?>" <?php echo $imageAttributes ?>>
+				<?php else: ?>
+					<?php
+						ob_start();
+						$this->insert('picture_default', $slide['image']->picture);
+						echo preg_replace('(<img\\s)i', '<img ' . $imageAttributes . ' ', ob_get_clean());
+					?>
+				<?php endif ?>
 
 		<?php elseif (! empty($slide['image'])): ?>
 
 			<div data-rsts-type="image" <?php echo $attributes ?>>
-				<img src="<?php echo $slide['image']->src ?>"<?php echo $slide['image']->imgSize ?> alt="<?php echo $slide['image']->alt ?>" <?php echo $imageAttributes ?>>
+				<?php if (version_compare(VERSION, '3.4', '<')): ?>
+					<img src="<?php echo $slide['image']->src ?>"<?php echo $slide['image']->imgSize ?> alt="<?php echo $slide['image']->alt ?>" <?php echo $imageAttributes ?>>
+				<?php else: ?>
+					<?php
+						ob_start();
+						$this->insert('picture_default', $slide['image']->picture);
+						echo preg_replace('(<img\\s)i', '<img ' . $imageAttributes . ' ', ob_get_clean());
+					?>
+				<?php endif ?>
 				<?php if ($slide['image']->href): ?>
 					<a class="rsts-details" href="<?php echo $slide['image']->href ?>"><?php echo $GLOBALS['TL_LANG']['MSC']['more'] ?></a>
 				<?php endif ?>
diff --git a/templates/rsts_default.xhtml b/templates/rsts_default.xhtml
index af4586d..8bf1ff7 100644
--- a/templates/rsts_default.xhtml
+++ b/templates/rsts_default.xhtml
@@ -7,7 +7,11 @@
 	<?php foreach ($this->images as $image): ?>
 
 		<div data-rsts-type="image">
-			<img src="<?php echo $image->src ?>"<?php echo $image->imgSize ?> alt="<?php echo $image->alt ?>" />
+			<?php if (version_compare(VERSION, '3.4', '<')): ?>
+				<img src="<?php echo $image->src ?>"<?php echo $image->imgSize ?> alt="<?php echo $image->alt ?>" />
+			<?php else: ?>
+				<?php $this->insert('picture_default', $image->picture) ?>
+			<?php endif ?>
 			<?php if ($image->href): ?>
 				<a href="<?php echo $image->href ?>"><?php echo $GLOBALS['TL_LANG']['MSC']['more'] ?></a>
 			<?php endif ?>
@@ -46,12 +50,28 @@
 		<?php if (! empty($slide['videoURL'])): ?>
 
 			<div data-rsts-type="video" data-rsts-video="<?php echo $slide['videoURL'] ?>" <?php echo $attributes ?>>
-				<img src="<?php echo $slide['image']->src ?>" alt="<?php echo $slide['image']->alt ?>" <?php echo $imageAttributes ?> />
+				<?php if (version_compare(VERSION, '3.4', '<')): ?>
+					<img src="<?php echo $slide['image']->src ?>"<?php echo $slide['image']->imgSize ?> alt="<?php echo $slide['image']->alt ?>" <?php echo $imageAttributes ?> />
+				<?php else: ?>
+					<?php
+						ob_start();
+						$this->insert('picture_default', $slide['image']->picture);
+						echo preg_replace('(<img\\s)i', '<img ' . $imageAttributes . ' ', ob_get_clean());
+					?>
+				<?php endif ?>
 
 		<?php elseif (! empty($slide['image'])): ?>
 
 			<div data-rsts-type="image" <?php echo $attributes ?>>
-				<img src="<?php echo $slide['image']->src ?>"<?php echo $slide['image']->imgSize ?> alt="<?php echo $slide['image']->alt ?>" <?php echo $imageAttributes ?> />
+				<?php if (version_compare(VERSION, '3.4', '<')): ?>
+					<img src="<?php echo $slide['image']->src ?>"<?php echo $slide['image']->imgSize ?> alt="<?php echo $slide['image']->alt ?>" <?php echo $imageAttributes ?> />
+				<?php else: ?>
+					<?php
+						ob_start();
+						$this->insert('picture_default', $slide['image']->picture);
+						echo preg_replace('(<img\\s)i', '<img ' . $imageAttributes . ' ', ob_get_clean());
+					?>
+				<?php endif ?>
 				<?php if ($slide['image']->href): ?>
 					<a class="rsts-details" href="<?php echo $slide['image']->href ?>"><?php echo $GLOBALS['TL_LANG']['MSC']['more'] ?></a>
 				<?php endif ?>