diff --git a/Classes/Domain/Model/PictureConfiguration.php b/Classes/Domain/Model/PictureConfiguration.php
index d4a9bf9..428c75e 100644
--- a/Classes/Domain/Model/PictureConfiguration.php
+++ b/Classes/Domain/Model/PictureConfiguration.php
@@ -51,10 +51,6 @@ public function __construct(array $arguments, array $typoScriptSettings, FileInt
                 $this->sources = $arguments['sources'];
                 $this->addSources = true;
             }
-            if (!empty($typoScriptSettings['lazyLoading']) && !isset($arguments['loading'])) {
-                $this->addLazyLoading = true;
-                $this->lazyLoading = (string)$typoScriptSettings['lazyLoading'];
-            }
             // do not add retina images for elements with variants (the browser should select the best-sized image)
             if (!empty($arguments['sizes'])) {
                 $this->useRetina = false;
@@ -63,6 +59,10 @@ public function __construct(array $arguments, array $typoScriptSettings, FileInt
         if (isset($arguments['pictureClass'])) {
             $this->pictureClass = $arguments['pictureClass'];
         }
+        if (!empty($typoScriptSettings['lazyLoading']) && !isset($arguments['loading'])) {
+            $this->addLazyLoading = true;
+            $this->lazyLoading = (string)$typoScriptSettings['lazyLoading'];
+        }
     }
 
     public function getPictureClass(): ?string
diff --git a/Classes/ViewHelpers/ImageViewHelper.php b/Classes/ViewHelpers/ImageViewHelper.php
index e02c4cd..6491672 100644
--- a/Classes/ViewHelpers/ImageViewHelper.php
+++ b/Classes/ViewHelpers/ImageViewHelper.php
@@ -181,7 +181,7 @@ public function render(): string
                 $sourceOutputs[] = $tag->render();
 
                 // Build additional source with type webp if attribute addWebp is set and previously build tag is not type of webp already.
-                $type = $tag->getAttribute('type');
+                $type = htmlspecialchars_decode($tag->getAttribute('type') ?? '');
                 if ($type !== 'image/webp' && $this->pictureConfiguration->webpShouldBeAdded()) {
                     $tag = $this->addWebpImage($sourceConfiguration, $imageSrc);
                     array_unshift($sourceOutputs, $tag->render());
@@ -214,7 +214,7 @@ protected function buildVariantsIfNeeded(array $configuration, FileInterface $im
         if (!empty($configuration['variants'])) {
             $processingInstructions = $this->getProcessingInstructions($configuration, $image);
             $ratio = null;
-            $variants = GeneralUtility::intExplode(',', $configuration['variants']);
+            $variants = GeneralUtility::intExplode(',', (string)$configuration['variants']);
             sort($variants);
             // determine the ratio
             if (!empty($configuration['width']) && !empty($configuration['height'])) {
@@ -222,16 +222,18 @@ protected function buildVariantsIfNeeded(array $configuration, FileInterface $im
                 $height = (int)preg_replace('/[^0-9]/', '', (string)$configuration['height']);
                 $ratio = $width / $height;
             }
+            $useWidthHeight = $ratio !== null || empty($configuration['maxWidth']);
+            $useMaxWidth = !empty($configuration['maxWidth']);
             foreach ($variants as $variant) {
                 // build processing instructions for each srcset variant
                 $srcsetWidth = $variant;
                 $srcsetHeight = ($ratio ? $variant * (1 / $ratio) : null);
                 $srcsetProcessingInstructions = [
-                    'width' => $srcsetWidth . (strpos((string)$configuration['width'], 'c') ? 'c' : ''),
-                    'height' => $srcsetHeight . (strpos((string)$configuration['height'], 'c') ? 'c' : ''),
+                    'width' => $useWidthHeight ? ($srcsetWidth . (strpos((string)$configuration['width'], 'c') ? 'c' : '')) : null,
+                    'height' => $useWidthHeight && $srcsetHeight ? ($srcsetHeight . (strpos((string)$configuration['height'], 'c') ? 'c' : '')) : null,
                     'minWidth' => null,
                     'minHeight' => null,
-                    'maxWidth' => null,
+                    'maxWidth' => $useMaxWidth ? $srcsetWidth : null,
                     'maxHeight' => null,
                     'crop' => $processingInstructions['crop'],
                 ];
@@ -375,7 +377,7 @@ protected function addRetina(array $processingInstructions, TagBuilder $tag, Fil
         // Process additional retina images. Tag value can be gathered for source tags from srcset value as there it
         // was to be set already because adding retina is not mandatory.
         if ($tag->hasAttribute('srcset')) {
-            $tagValue = $tag->getAttribute('srcset');
+            $tagValue = htmlspecialchars_decode($tag->getAttribute('srcset') ?? '');
             $tag->removeAttribute('srcset');
         } else {
             $tagValue = $imageUriRegular;
@@ -422,11 +424,13 @@ protected function addWebpImage(array $configuration, FileInterface $image): Tag
      */
     protected function wrapWithPictureElement(array $output): array
     {
+        $attributes = '';
         if ($this->pictureConfiguration->hasPictureClass()) {
-            array_unshift($output, '<picture class="' . $this->pictureConfiguration->getPictureClass() . '">');
-        } else {
-            array_unshift($output, '<picture>');
+            $attributes = ' ' . GeneralUtility::implodeAttributes([
+                'class' => $this->pictureConfiguration->getPictureClass(),
+            ]);
         }
+        array_unshift($output, '<picture' . $attributes . '>');
         $output[] = '</picture>';
         return $output;
     }
diff --git a/README.md b/README.md
index c49c350..e9af47b 100644
--- a/README.md
+++ b/README.md
@@ -45,8 +45,9 @@ See `EXT:picture/Configuration/TypoScript/setup.typoscript` for possible configu
 ## Attributes
 
 ### All from f:image
-Our image ViewHelper extends from the Fluid Image ViewHelper, so it has all the same attributes, including:
+Our image ViewHelper mimics the Fluid Image ViewHelper, so it has all the same attributes, including:
 * `width` and `height`, including `c` option for crop scaling
+* `maxWidth` for proportional scaling, without upscaling
 * `fileExtension` to set a file extension (to force webp for example)
 * `alt` and `title`
 * `cropVariant`
diff --git a/Tests/Functional/Frontend/TagRenderingTest.php b/Tests/Functional/Frontend/TagRenderingTest.php
index 8c770b3..b731567 100644
--- a/Tests/Functional/Frontend/TagRenderingTest.php
+++ b/Tests/Functional/Frontend/TagRenderingTest.php
@@ -222,7 +222,7 @@ public function imageWithPictureClassRenderPictureTag(): void
         $this->importCSVDataSet(__DIR__ . '/Fixtures/image_with_picture_class.csv');
         $response = $this->executeFrontendSubRequest(new InternalRequest('http://localhost/'));
         $body = (string)$response->getBody();
-        $expected = '<picture class="my-class"><img src="/typo3conf/ext/picture/Resources/Public/Icons/Extension.svg" width="256" height="256" alt="" /></picture>';
+        $expected = '<picture class="my-class"><img src="/typo3conf/ext/picture/Resources/Public/Icons/Extension.svg" width="256" height="256" loading="lazy" alt="" /></picture>';
         self::assertStringContainsString($expected, $body);
     }
 
diff --git a/Tests/Functional/ViewHelpers/Fixtures/ImageWithSourcesAndRetina.html b/Tests/Functional/ViewHelpers/Fixtures/ImageWithSourcesAndRetina.html
new file mode 100644
index 0000000..0fc990e
--- /dev/null
+++ b/Tests/Functional/ViewHelpers/Fixtures/ImageWithSourcesAndRetina.html
@@ -0,0 +1,9 @@
+<html
+	xmlns:f="http://typo3.org/ns/TYPO3/CMS/Fluid/ViewHelpers"
+	xmlns:i="http://typo3.org/ns/B13/Picture/ViewHelpers"
+	data-namespace-typo3-fluid="true"
+>
+<i:image src="1" width="150c" height="150c"
+				 useRetina="1"
+				 sources="{md: {width: '1680c', height: '1000c'}}" />
+</html>
diff --git a/Tests/Functional/ViewHelpers/ImageViewHelperTest.php b/Tests/Functional/ViewHelpers/ImageViewHelperTest.php
index ffecaa4..79f0931 100644
--- a/Tests/Functional/ViewHelpers/ImageViewHelperTest.php
+++ b/Tests/Functional/ViewHelpers/ImageViewHelperTest.php
@@ -47,6 +47,26 @@ public function imageWithSources(): void
         self::assertTrue(str_contains(trim($content), '<img src='));
     }
 
+    /**
+     * @test
+     */
+    public function imageWithSourcesAndRetina(): void
+    {
+        $this->importCSVDataSet(__DIR__ . '/Fixtures/storage_with_file.csv');
+        $template = __DIR__ . '/Fixtures/ImageWithSourcesAndRetina.html';
+        $view = GeneralUtility::makeInstance(StandaloneView::class);
+        $view->setTemplatePathAndFilename($template);
+        $content = $view->render();
+        $this->assertProcessedFileExists(150, 150);
+        $this->assertProcessedFileExists(300, 300);
+        $this->assertProcessedFileExists(1680, 1000);
+        $this->assertProcessedFileExists(3360, 2000);
+        self::assertTrue(str_starts_with(trim($content), '<picture><source srcset='));
+        self::assertTrue(str_contains(trim($content), '<img src='));
+        self::assertTrue(!str_contains(trim($content), 'eID=dumpFile&amp;amp;'));
+        self::assertTrue(str_contains(trim($content), 'eID=dumpFile&amp;t='));
+    }
+
     /**
      * @test
      */
diff --git a/composer.json b/composer.json
index 38d5d6b..1852f0d 100644
--- a/composer.json
+++ b/composer.json
@@ -31,16 +31,10 @@
     "bin-dir": ".Build/bin",
     "allow-plugins": {
       "typo3/class-alias-loader": true,
-      "typo3/cms-composer-installers": true,
-      "sbuerk/typo3-cmscomposerinstallers-testingframework-bridge": false
+      "typo3/cms-composer-installers": true
     },
     "sort-packages": true
   },
-  "scripts": {
-    "prepare-tests-10": [
-      "TYPO3\\TestingFramework\\Composer\\ExtensionTestEnvironment::prepare"
-    ]
-  },
   "autoload-dev": {
     "psr-4": {
       "B13\\Picture\\Tests\\": "Tests/"