diff --git a/src/core/Form/FileUploadHandler.php b/src/core/Form/FileUploadHandler.php
index 68b9b90..5dd6c50 100644
--- a/src/core/Form/FileUploadHandler.php
+++ b/src/core/Form/FileUploadHandler.php
@@ -11,6 +11,15 @@ use Symfony\Component\HttpFoundation\File\UploadedFile;
  */
 class FileUploadHandler
 {
+    protected $filenameGenerator;
+
+    public function setFilenameGenerator(callable $filenameGenerator): self
+    {
+        $this->filenameGenerator = $filenameGenerator;
+
+        return $this;
+    }
+
     public function handleForm(?UploadedFile $uploadedFile, string $path, ?callable $afterUploadCallback = null, bool $keepOriginalFilename = false): void
     {
         if (null === $uploadedFile) {
@@ -21,9 +30,11 @@ class FileUploadHandler
 
         if ($keepOriginalFilename) {
             $filename = $originalFilename.'.'.$uploadedFile->guessExtension();
-        } else {
+        } elseif (!is_callable($this->filenameGenerator)) {
             $safeFilename = transliterator_transliterate('Any-Latin; Latin-ASCII; [^A-Za-z0-9_] remove; Lower()', $originalFilename);
             $filename = date('Ymd-his').$safeFilename.'.'.$uploadedFile->guessExtension();
+        } else {
+            $filename = call_user_func($this->filenameGenerator, $uploadedFile);
         }
 
         $uploadedFile->move($path, $filename);