diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index 3fdc6ce..bfcdc28 100644
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -434,6 +434,12 @@ private function getIconsNode(string $info): ArrayNodeDefinition
             ->treatTrueLike([])
             ->treatNullLike([])
             ->arrayPrototype()
+                ->beforeNormalization()
+                    ->ifString()
+                    ->then(static fn (string $v): array => [
+                            'src' => $v,
+                        ])
+                ->end()
                 ->children()
                     ->scalarNode('src')
                         ->isRequired()
@@ -502,6 +508,12 @@ private function getScreenshotsNode(string $info): ArrayNodeDefinition
             ->treatTrueLike([])
             ->treatNullLike([])
             ->arrayPrototype()
+                ->beforeNormalization()
+                    ->ifString()
+                    ->then(static fn (string $v): array => [
+                            'src' => $v,
+                        ])
+                ->end()
                 ->children()
                     ->scalarNode('src')
                         ->info('The path to the screenshot. Can be served by Asset Mapper.')
diff --git a/src/Normalizer/IconNormalizer.php b/src/Normalizer/IconNormalizer.php
index 77bc4af..599e2d2 100644
--- a/src/Normalizer/IconNormalizer.php
+++ b/src/Normalizer/IconNormalizer.php
@@ -5,14 +5,18 @@
 namespace SpomkyLabs\PwaBundle\Normalizer;
 
 use SpomkyLabs\PwaBundle\Dto\Icon;
+use SpomkyLabs\PwaBundle\ImageProcessor\ImageProcessor;
 use Symfony\Component\AssetMapper\AssetMapperInterface;
+use Symfony\Component\AssetMapper\MappedAsset;
+use Symfony\Component\Mime\MimeTypes;
 use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
 use function assert;
 
 final readonly class IconNormalizer implements NormalizerInterface
 {
     public function __construct(
-        private AssetMapperInterface $assetMapper
+        private AssetMapperInterface $assetMapper,
+        private null|ImageProcessor $imageProcessor,
     ) {
     }
 
@@ -20,17 +24,20 @@ public function normalize(mixed $object, string $format = null, array $context =
     {
         assert($object instanceof Icon);
         $url = null;
+        $asset = null;
         if (! str_starts_with($object->src, '/')) {
-            $url = $this->assetMapper->getAsset($object->src)?->publicPath;
+            $asset = $this->assetMapper->getAsset($object->src);
+            $url = $asset?->publicPath;
         }
         if ($url === null) {
             $url = $object->src;
         }
+        $format = $this->getFormat($object, $asset);
 
         $result = [
             'src' => $url,
             'sizes' => $object->getSizeList(),
-            'type' => $object->format,
+            'type' => $format,
             'purpose' => $object->purpose,
         ];
 
@@ -56,4 +63,18 @@ public function getSupportedTypes(?string $format): array
             Icon::class => true,
         ];
     }
+
+    private function getFormat(Icon $object, ?MappedAsset $asset): ?string
+    {
+        if ($object->format !== null) {
+            return $object->format;
+        }
+
+        if ($this->imageProcessor === null || $asset === null || ! class_exists(MimeTypes::class)) {
+            return null;
+        }
+
+        $mime = MimeTypes::getDefault();
+        return $mime->guessMimeType($asset->sourcePath);
+    }
 }
diff --git a/src/Twig/PwaRuntime.php b/src/Twig/PwaRuntime.php
index 6d38a51..11b7d99 100644
--- a/src/Twig/PwaRuntime.php
+++ b/src/Twig/PwaRuntime.php
@@ -22,14 +22,40 @@ public function __construct(
         $this->manifestPublicUrl = '/' . trim($manifestPublicUrl, '/');
     }
 
-    public function load(): string
+    public function load(bool $themeColor = true, bool $icons = true): string
     {
         $url = $this->assetMapper->getPublicPath($this->manifestPublicUrl) ?? $this->manifestPublicUrl;
         $output = sprintf('<link rel="manifest" href="%s">', $url);
-        if ($this->manifest->themeColor !== null) {
+        if ($this->manifest->icons !== [] && $icons === true) {
+            foreach ($this->manifest->icons as $icon) {
+                $iconUrl = $this->getIconPublicUrl($icon->src);
+                $output .= sprintf(
+                    '%s<link rel="%s" sizes="%s" href="%s">',
+                    PHP_EOL,
+                    str_contains($icon->purpose ?? '', 'maskable') ? 'mask-icon' : 'icon',
+                    $icon->getSizeList(),
+                    $iconUrl
+                );
+            }
+        }
+        if ($this->manifest->themeColor !== null && $themeColor === true) {
             $output .= sprintf('%s<meta name="theme-color" content="%s">', PHP_EOL, $this->manifest->themeColor);
         }
 
         return $output;
     }
+
+    private function getIconPublicUrl(string $source): ?string
+    {
+        $url = null;
+        if (! str_starts_with($source, '/')) {
+            $asset = $this->assetMapper->getAsset($source);
+            $url = $asset?->publicPath;
+        }
+        if ($url === null) {
+            $url = $source;
+        }
+
+        return $url;
+    }
 }
diff --git a/tests/config.php b/tests/config.php
index ae83477..befd97e 100644
--- a/tests/config.php
+++ b/tests/config.php
@@ -114,16 +114,7 @@
         'scope' => '/app/',
         'start_url' => 'https://example.com',
         'theme_color' => 'red',
-        'screenshots' => [
-            [
-                'src' => 'pwa/screenshots/360x800.svg',
-                'platform' => 'android',
-                'format' => 'png',
-                'label' => '360x800',
-                'width' => 360,
-                'height' => 800,
-            ],
-        ],
+        'screenshots' => ['pwa/screenshots/360x800.svg'],
         'share_target' => [
             'action' => 'shared_content_receiver',
             'action_params' => [
@@ -154,21 +145,11 @@
                 'name' => 'New reminder',
                 'url' => '/create/reminder',
                 'icons' => [
+                    'pwa/1920x1920.svg',
                     [
                         'src' => 'pwa/1920x1920.svg',
-                        'sizes' => [48, 72, 96, 128, 256],
-                        'format' => 'webp',
-                    ],
-                    [
-                        'src' => 'pwa/1920x1920.svg',
-                        'sizes' => [48, 72, 96, 128, 256],
-                        'format' => 'png',
                         'purpose' => 'maskable',
                     ],
-                    [
-                        'src' => 'pwa/1920x1920.svg',
-                        'sizes' => [0],
-                    ],
                 ],
             ],
         ],