// src/app/Library/Uploaders/SingleBase64Image.php
if (Str::startsWith($value, 'data:image')) {
  // MIME subtype and decoded bytes are not validated
  $base64Image = Str::after($value, ';base64,');
  $finalPath  = $this->getPath() . $this->getFileName($value);
  Storage::disk($this->getDisk())->put($finalPath, base64 decode($base64Image));
  return $finalPath;
}

// src/app/Library/Uploaders/Support/FileNameGenerator.php
private function getExtensionFromFile(string|UploadedFile $file): string
{
  return is a($file, UploadedFile::class, true)
    ? $file->extension()
    : Str::after(mime content type($file), '/'); // returns false on data URIs → empty string
}