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packages/vitec/Classes/UserFunc/DownloadcardcollectionJsonRenderer.php

@@ -212,6 +212,7 @@ class DownloadcardcollectionJsonRenderer
                 );
                 $srcset[] = [
                     'url'        => $imageService->getImageUri($variant),
+            'thumbnail' => $thumbnailUrl,
                     'width'      => $width,
                     'descriptor' => $width . 'w',
                 ];
@@ -225,6 +226,7 @@ class DownloadcardcollectionJsonRenderer
             return [
                 'uid'         => (int)$fileRefData['uid'],
                 'url'         => $imageService->getImageUri($default),
+            'thumbnail' => $thumbnailUrl,
                 'title'       => $fileRefData['title'] ?? '',
                 'alternative' => $fileRefData['alternative'] ?? '',
                 'description' => $fileRefData['description'] ?? '',
@@ -297,10 +299,25 @@ class DownloadcardcollectionJsonRenderer
             return null;
         }
 
+
+        $thumbnailUrl = null;
+        try {
+            $fileObj = GeneralUtility::makeInstance(\TYPO3\CMS\Core\Resource\ResourceFactory::class)
+                ->getFileObject((int)$row['file_uid']);
+            $processed = $fileObj->process(
+                \TYPO3\CMS\Core\Resource\ProcessedFile::CONTEXT_IMAGEPREVIEW,
+                ['width' => 400, 'height' => 566]
+            );
+            $thumbnailUrl = $processed->getPublicUrl();
+        } catch (\Throwable $e) {
+            // ignore — keep null
+        }
+
         return [
             'uid'         => (int)$row['file_uid'],
             'name'        => (string)($row['name'] ?? ''),
             'url'         => '/fileadmin' . ($row['identifier'] ?? ''),
+            'thumbnail' => $thumbnailUrl,
             'size'        => (int)($row['size'] ?? 0),
             'extension'   => (string)($row['extension'] ?? ''),
             'mimeType'    => (string)($row['mime_type'] ?? ''),