diff --git a/tools/asset_manager.inc.php b/tools/asset_manager.inc.php
new file mode 100644
index 0000000..599bddc
--- /dev/null
+++ b/tools/asset_manager.inc.php
@@ -0,0 +1,199 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_asset_relative_dir()
+{
+  return 'local/bratonien/assets/';
+}
+
+function bratonien_tools_asset_absolute_dir()
+{
+  return PHPWG_ROOT_PATH . bratonien_tools_asset_relative_dir();
+}
+
+function bratonien_tools_ensure_asset_directory()
+{
+  $dir = bratonien_tools_asset_absolute_dir();
+  if (!is_dir($dir) && !@mkdir($dir, 0755, true) && !is_dir($dir))
+  {
+    throw new RuntimeException('Asset-Verzeichnis konnte nicht angelegt werden: '.$dir);
+  }
+
+  if (!is_writable($dir))
+  {
+    throw new RuntimeException('Asset-Verzeichnis ist nicht beschreibbar: '.$dir);
+  }
+
+  return $dir;
+}
+
+function bratonien_tools_asset_safe_name($name)
+{
+  $name = basename((string)$name);
+  $ext = strtolower(pathinfo($name, PATHINFO_EXTENSION));
+  $base = pathinfo($name, PATHINFO_FILENAME);
+  $base = preg_replace('/[^a-zA-Z0-9._-]+/', '-', $base);
+  $base = trim($base, '.-_');
+  if ($base === '')
+  {
+    $base = 'bild';
+  }
+  return $base.'.'.$ext;
+}
+
+function bratonien_tools_asset_validate_upload($tmp, $original_name)
+{
+  $allowed = array('jpg', 'jpeg', 'png', 'gif', 'webp');
+  $ext = strtolower(pathinfo((string)$original_name, PATHINFO_EXTENSION));
+  if (!in_array($ext, $allowed, true))
+  {
+    throw new RuntimeException('Erlaubte Bildformate: JPG, JPEG, PNG, GIF und WEBP.');
+  }
+
+  $info = @getimagesize($tmp);
+  if ($info === false)
+  {
+    throw new RuntimeException('Die hochgeladene Datei ist kein gueltiges Bild.');
+  }
+
+  $mime_allowed = array('image/jpeg', 'image/png', 'image/gif', 'image/webp');
+  if (empty($info['mime']) || !in_array(strtolower($info['mime']), $mime_allowed, true))
+  {
+    throw new RuntimeException('Der erkannte Bildtyp ist nicht erlaubt.');
+  }
+
+  return $info;
+}
+
+function bratonien_tools_asset_unique_target($dir, $filename)
+{
+  $ext = pathinfo($filename, PATHINFO_EXTENSION);
+  $base = pathinfo($filename, PATHINFO_FILENAME);
+  $target = $dir.$filename;
+  $counter = 2;
+
+  while (file_exists($target))
+  {
+    $filename = $base.'-'.$counter.'.'.$ext;
+    $target = $dir.$filename;
+    $counter++;
+  }
+
+  return array($target, $filename);
+}
+
+function bratonien_tools_upload_asset()
+{
+  if (empty($_FILES['asset_upload']) || !is_array($_FILES['asset_upload']))
+  {
+    throw new RuntimeException('Keine Bilddatei ausgewaehlt.');
+  }
+
+  $file = $_FILES['asset_upload'];
+  if (!isset($file['error']) || (int)$file['error'] !== UPLOAD_ERR_OK)
+  {
+    $code = isset($file['error']) ? (int)$file['error'] : -1;
+    throw new RuntimeException('Upload fehlgeschlagen (PHP-Uploadcode '.$code.').');
+  }
+
+  bratonien_tools_asset_validate_upload($file['tmp_name'], $file['name']);
+  $dir = bratonien_tools_ensure_asset_directory();
+  $safe = bratonien_tools_asset_safe_name($file['name']);
+  list($target, $filename) = bratonien_tools_asset_unique_target($dir, $safe);
+
+  if (!@move_uploaded_file($file['tmp_name'], $target))
+  {
+    throw new RuntimeException('Die Bilddatei konnte nicht in das Asset-Verzeichnis verschoben werden.');
+  }
+
+  @chmod($target, 0644);
+  return array('message' => 'Bild hochgeladen. Relativer Pfad: '.bratonien_tools_asset_relative_dir().$filename);
+}
+
+function bratonien_tools_delete_asset()
+{
+  $filename = isset($_POST['asset_file']) ? basename((string)$_POST['asset_file']) : '';
+  if ($filename === '')
+  {
+    throw new RuntimeException('Keine Datei zum Loeschen ausgewaehlt.');
+  }
+
+  $dir = bratonien_tools_asset_absolute_dir();
+  $target = $dir.$filename;
+  if (!is_file($target))
+  {
+    throw new RuntimeException('Die Datei wurde nicht gefunden.');
+  }
+
+  if (!@unlink($target))
+  {
+    throw new RuntimeException('Die Datei konnte nicht geloescht werden.');
+  }
+
+  return array('message' => 'Bilddatei geloescht: '.$filename);
+}
+
+function bratonien_tools_get_assets()
+{
+  $dir = bratonien_tools_asset_absolute_dir();
+  if (!is_dir($dir))
+  {
+    return array();
+  }
+
+  $allowed = array('jpg', 'jpeg', 'png', 'gif', 'webp');
+  $assets = array();
+  foreach (scandir($dir) as $file)
+  {
+    if ($file === '.' || $file === '..')
+    {
+      continue;
+    }
+
+    $absolute = $dir.$file;
+    if (!is_file($absolute))
+    {
+      continue;
+    }
+
+    $ext = strtolower(pathinfo($file, PATHINFO_EXTENSION));
+    if (!in_array($ext, $allowed, true))
+    {
+      continue;
+    }
+
+    $info = @getimagesize($absolute);
+    $relative = bratonien_tools_asset_relative_dir().$file;
+    $assets[] = array(
+      'file' => $file,
+      'relative' => $relative,
+      'url' => get_root_url().$relative,
+      'width' => $info ? (int)$info[0] : 0,
+      'height' => $info ? (int)$info[1] : 0,
+      'bytes' => (int)filesize($absolute),
+    );
+  }
+
+  usort($assets, function($a, $b) {
+    return strcasecmp($a['file'], $b['file']);
+  });
+
+  return $assets;
+}
+
+function bratonien_tools_get_asset_environment()
+{
+  $absolute = bratonien_tools_asset_absolute_dir();
+  return array(
+    'root' => PHPWG_ROOT_PATH,
+    'relative_dir' => bratonien_tools_asset_relative_dir(),
+    'absolute_dir' => $absolute,
+    'exists' => is_dir($absolute),
+    'writable' => is_dir($absolute) && is_writable($absolute),
+    'upload_max' => ini_get('upload_max_filesize'),
+    'post_max' => ini_get('post_max_size'),
+  );
+}