diff --git a/typo3/sysext/core/Configuration/DefaultConfiguration.php b/typo3/sysext/core/Configuration/DefaultConfiguration.php
index 4f5ee07db892007715df9cba48cdf24d193a8b58..e889afebc7bcb7b60d538e9d0fcb445580785a79 100644
--- a/typo3/sysext/core/Configuration/DefaultConfiguration.php
+++ b/typo3/sysext/core/Configuration/DefaultConfiguration.php
@@ -859,6 +859,10 @@ return [
 			options.file_list.enableDisplayBigControlPanel=selectable
 			options.file_list.enableDisplayThumbnails=selectable
 			options.file_list.enableClipBoard=selectable
+			options.file_list.thumbnail {
+				width = 64
+				height = 64
+			}
 			options.pageTree {
 				doktypesToShowInNewPageDragArea = 1,6,4,7,3,254,255,199
 			}
diff --git a/typo3/sysext/core/Documentation/Changelog/master/Feature-73357-MakeThumbnailSizeInFileBrowserConfigurable.rst b/typo3/sysext/core/Documentation/Changelog/master/Feature-73357-MakeThumbnailSizeInFileBrowserConfigurable.rst
new file mode 100644
index 0000000000000000000000000000000000000000..c0a806b03fc43a3533d5af34c90ac14da56251dd
--- /dev/null
+++ b/typo3/sysext/core/Documentation/Changelog/master/Feature-73357-MakeThumbnailSizeInFileBrowserConfigurable.rst
@@ -0,0 +1,26 @@
+.. include:: ../../Includes.txt
+
+==================================================================
+Feature: #73357 - Make thumbnail size in file browser configurable
+==================================================================
+
+See :issue:`73357`
+
+Description
+===========
+
+The default size of thumbnails in the file list is 64x64. These values can now be configured with UserTSConfig.
+
+Example:
+
+.. code-block:: typoscript
+   options.file_list.thumbnail.width = 256
+   options.file_list.thumbnail.height = 256
+
+
+Impact
+======
+
+All preview images in the file list will be rendered in the configured thumbnail size.
+
+.. index:: Backend, TSConfig
diff --git a/typo3/sysext/filelist/Classes/Configuration/ThumbnailConfiguration.php b/typo3/sysext/filelist/Classes/Configuration/ThumbnailConfiguration.php
new file mode 100644
index 0000000000000000000000000000000000000000..88441b02468c2dfa9a8352f6cf3e54a82836a9ba
--- /dev/null
+++ b/typo3/sysext/filelist/Classes/Configuration/ThumbnailConfiguration.php
@@ -0,0 +1,68 @@
+<?php
+declare(strict_types=1);
+
+namespace TYPO3\CMS\Filelist\Configuration;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+use TYPO3\CMS\Backend\Utility\BackendUtility;
+use TYPO3\CMS\Core\SingletonInterface;
+use TYPO3\CMS\Core\Utility\MathUtility;
+
+/**
+ * Class TYPO3\CMS\Filelist\Configuration\ThumbnailConfiguration
+ */
+class ThumbnailConfiguration implements SingletonInterface
+{
+    /**
+     * @var int
+     */
+    protected $width = 64;
+
+    /**
+     * @var int
+     */
+    protected $height = 64;
+
+    public function __construct()
+    {
+        $modTSconfig = BackendUtility::getModTSconfig(0, 'options.file_list');
+        if (isset($modTSconfig['properties']['thumbnail.']['width'])
+            && MathUtility::canBeInterpretedAsInteger($modTSconfig['properties']['thumbnail.']['width'])
+        ) {
+            $this->width = (int)$modTSconfig['properties']['thumbnail.']['width'];
+        }
+        if (isset($modTSconfig['properties']['thumbnail.']['height'])
+            && MathUtility::canBeInterpretedAsInteger($modTSconfig['properties']['thumbnail.']['height'])
+        ) {
+            $this->height = (int)$modTSconfig['properties']['thumbnail.']['height'];
+        }
+    }
+
+    /**
+     * @return int
+     */
+    public function getWidth(): int
+    {
+        return $this->width;
+    }
+
+    /**
+     * @return int
+     */
+    public function getHeight(): int
+    {
+        return $this->height;
+    }
+}
diff --git a/typo3/sysext/filelist/Classes/Controller/FileListController.php b/typo3/sysext/filelist/Classes/Controller/FileListController.php
index a97669c494cb88eef8f8b4709b926f95491fea4a..3956199ad97f9e43c79053277571d2b49976e016 100644
--- a/typo3/sysext/filelist/Classes/Controller/FileListController.php
+++ b/typo3/sysext/filelist/Classes/Controller/FileListController.php
@@ -34,6 +34,7 @@ use TYPO3\CMS\Core\Utility\MathUtility;
 use TYPO3\CMS\Extbase\Mvc\Controller\ActionController;
 use TYPO3\CMS\Extbase\Mvc\View\ViewInterface;
 use TYPO3\CMS\Extbase\Utility\LocalizationUtility;
+use TYPO3\CMS\Filelist\Configuration\ThumbnailConfiguration;
 use TYPO3\CMS\Filelist\FileList;
 
 /**
@@ -519,6 +520,12 @@ class FileListController extends ActionController
         $pageRenderer = $this->view->getModuleTemplate()->getPageRenderer();
         $pageRenderer->loadRequireJsModule('TYPO3/CMS/Filelist/FileList');
 
+        $thumbnailConfiguration = GeneralUtility::makeInstance(ThumbnailConfiguration::class);
+        $this->view->assign('thumbnail', [
+            'width' => $thumbnailConfiguration->getWidth(),
+            'height' => $thumbnailConfiguration->getHeight(),
+        ]);
+
         $this->view->assign('searchWord', $searchWord);
         $this->view->assign('files', $fileFacades);
         $this->view->assign('deleteUrl', BackendUtility::getModuleUrl('tce_file'));
diff --git a/typo3/sysext/filelist/Classes/FileList.php b/typo3/sysext/filelist/Classes/FileList.php
index 207bd6b3be774c8d70642b4d8c48aa55aec81333..a07af92a93b30070c90475b45880770d532cab4d 100644
--- a/typo3/sysext/filelist/Classes/FileList.php
+++ b/typo3/sysext/filelist/Classes/FileList.php
@@ -36,6 +36,7 @@ use TYPO3\CMS\Core\Resource\Utility\ListUtility;
 use TYPO3\CMS\Core\Type\Bitmask\JsConfirmation;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Core\Utility\MathUtility;
+use TYPO3\CMS\Filelist\Configuration\ThumbnailConfiguration;
 use TYPO3\CMS\Filelist\Controller\FileListController;
 
 /**
@@ -266,6 +267,11 @@ class FileList
      */
     protected $fileListController;
 
+    /**
+     * @var ThumbnailConfiguration
+     */
+    protected $thumbnailConfiguration;
+
     /**
      * Construct
      *
@@ -281,6 +287,7 @@ class FileList
         $this->determineScriptUrl();
         $this->fileListController = $fileListController;
         $this->iconFactory = GeneralUtility::makeInstance(IconFactory::class);
+        $this->thumbnailConfiguration = GeneralUtility::makeInstance(ThumbnailConfiguration::class);
 
         $modTSconfig = BackendUtility::getModTSconfig(0, 'options.file_list');
         if (!empty($modTSconfig['properties']['filesPerPage'])) {
@@ -1099,7 +1106,13 @@ class FileList
                                 . '</span>';
                             // Thumbnails?
                         } elseif ($this->thumbs && ($this->isImage($ext) || $this->isMediaFile($ext))) {
-                            $processedFile = $fileObject->process(ProcessedFile::CONTEXT_IMAGEPREVIEW, []);
+                            $processedFile = $fileObject->process(
+                                ProcessedFile::CONTEXT_IMAGEPREVIEW,
+                                [
+                                    'width' => $this->thumbnailConfiguration->getWidth(),
+                                    'height' => $this->thumbnailConfiguration->getHeight()
+                                ]
+                            );
                             if ($processedFile) {
                                 $thumbUrl = $processedFile->getPublicUrl(true);
                                 $theData[$field] .= '<br /><img src="' . $thumbUrl . '" ' .
diff --git a/typo3/sysext/filelist/Resources/Private/Templates/FileList/Search.html b/typo3/sysext/filelist/Resources/Private/Templates/FileList/Search.html
index 48531d650325b0d04e5284d08615178af60c36fc..cc2cce93dbdc40d54f50c536988494bc780dc5d8 100644
--- a/typo3/sysext/filelist/Resources/Private/Templates/FileList/Search.html
+++ b/typo3/sysext/filelist/Resources/Private/Templates/FileList/Search.html
@@ -54,7 +54,7 @@
 							</f:if>
 							<f:if condition="{file.isImage}">
 								<br>
-								<f:image image="{file.resource}" maxWidth="64" maxHeight="43" />
+								<f:image image="{file.resource}" maxWidth="{thumbnail.width}" maxHeight="{thumbnail.height}" />
 							</f:if>
 						</td>
 						<td class="col-control nowrap">
diff --git a/typo3/sysext/recordlist/Classes/Browser/FileBrowser.php b/typo3/sysext/recordlist/Classes/Browser/FileBrowser.php
index c93b61011ba74e64f7f72b0cc661cee90755241f..77437ecbfe1cf397eb8de33558516261e2707252 100644
--- a/typo3/sysext/recordlist/Classes/Browser/FileBrowser.php
+++ b/typo3/sysext/recordlist/Classes/Browser/FileBrowser.php
@@ -26,6 +26,7 @@ use TYPO3\CMS\Core\Resource\Folder;
 use TYPO3\CMS\Core\Resource\ProcessedFile;
 use TYPO3\CMS\Core\Resource\ResourceFactory;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Core\Utility\MathUtility;
 use TYPO3\CMS\Recordlist\Tree\View\LinkParameterProviderInterface;
 use TYPO3\CMS\Recordlist\View\FolderUtilityRenderer;
 
@@ -66,6 +67,11 @@ class FileBrowser extends AbstractElementBrowser implements ElementBrowserInterf
      */
     protected $fileRepository;
 
+    /**
+     * @var array
+     */
+    protected $thumbnailConfiguration = [];
+
     /**
      * Loads additional JavaScript
      */
@@ -74,6 +80,18 @@ class FileBrowser extends AbstractElementBrowser implements ElementBrowserInterf
         parent::initialize();
         $this->pageRenderer->loadRequireJsModule('TYPO3/CMS/Recordlist/BrowseFiles');
         $this->fileRepository = GeneralUtility::makeInstance(FileRepository::class);
+
+        $modTSconfig = BackendUtility::getModTSconfig(0, 'options.file_list');
+        if (isset($modTSconfig['properties']['thumbnail.']['width'])
+            && MathUtility::canBeInterpretedAsInteger($modTSconfig['properties']['thumbnail.']['width'])
+        ) {
+            $this->thumbnailConfiguration['width'] = (int)$modTSconfig['properties']['thumbnail.']['width'];
+        }
+        if (isset($modTSconfig['properties']['thumbnail.']['height'])
+            && MathUtility::canBeInterpretedAsInteger($modTSconfig['properties']['thumbnail.']['height'])
+        ) {
+            $this->thumbnailConfiguration['height'] = (int)$modTSconfig['properties']['thumbnail.']['height'];
+        }
     }
 
     /**
@@ -270,7 +288,7 @@ class FileBrowser extends AbstractElementBrowser implements ElementBrowserInterf
             if (!$noThumbs && GeneralUtility::inList(strtolower($GLOBALS['TYPO3_CONF_VARS']['GFX']['imagefile_ext'] . ',' . $GLOBALS['TYPO3_CONF_VARS']['SYS']['mediafile_ext']), strtolower($fileExtension))) {
                 $processedFile = $fileObject->process(
                     ProcessedFile::CONTEXT_IMAGEPREVIEW,
-                    ['width' => 64, 'height' => 64]
+                    $this->thumbnailConfiguration
                 );
                 $imageUrl = $processedFile->getPublicUrl(true);
                 $imgInfo = [