diff --git a/DocuMentor.wxs b/DocuMentor.wxs
index babbb0e..e7d754d 100644
--- a/DocuMentor.wxs
+++ b/DocuMentor.wxs
@@ -4,7 +4,7 @@
   <!-- Paket-Definition (ersetzt Product in v4) -->
   <Package 
     Name="DocuMentor" 
-    Version="1.7.0"
+    Version="1.7.1"
     Manufacturer="Vitali Graf / Software- und Datenbankentwicklung" 
     UpgradeCode="F498B66C-726D-44AA-95F4-CB4FBDCEF26E"
     Language="1031"
diff --git a/THIRD_PARTY_LICENSES.txt b/THIRD_PARTY_LICENSES.txt
index 9060d04..75fd3f8 100644
--- a/THIRD_PARTY_LICENSES.txt
+++ b/THIRD_PARTY_LICENSES.txt
@@ -262,6 +262,6 @@ HINWEISE
    da sich diese ändern können.
 
 ================================================================================
-Stand: April 2026
-Erstellt für: DocuMentor v1.7.0
+Stand: Mai 2026
+Erstellt für: DocuMentor v1.7.1
 ================================================================================
diff --git a/installer.iss b/installer.iss
index 9fe8c3c..ed8e215 100644
--- a/installer.iss
+++ b/installer.iss
@@ -10,7 +10,7 @@
 ; Build-Befehl: iscc installer.iss
 
 #define MyAppName "DocuMentor"
-#define MyAppVersion "1.7.0"
+#define MyAppVersion "1.7.1"
 #define MyAppPublisher "Ihr Name/Organisation"
 #define MyAppURL "https://github.com/yourusername/xsl-validator"
 #define MyAppExeName "DocuMentor.exe"
diff --git a/pyproject.toml b/pyproject.toml
index ed229e6..61425fc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "DocuMentor"
-version = "1.7.0"
+version = "1.7.1"
 description = "Professionelle XSL-Transformations-Verwaltung und PDF-Generierung"
 readme = "README.md"
 license = {text = "MIT"}
diff --git a/scripts/download_icons.py b/scripts/download_icons.py
index cc92523..0dc6374 100644
--- a/scripts/download_icons.py
+++ b/scripts/download_icons.py
@@ -29,7 +29,6 @@ ICONS = [
     "file-plus",
     "columns",
     "sliders",
-    "folder-open",
 ]
 
 BASE_URL = "https://raw.githubusercontent.com/feathericons/feather/master/icons/{name}.svg"
diff --git a/src/icons.py b/src/icons.py
index 9f138a9..3deb243 100644
--- a/src/icons.py
+++ b/src/icons.py
@@ -3,36 +3,19 @@ from PySide6.QtCore import QByteArray, QFile, Qt
 from PySide6.QtGui import QIcon, QPainter, QPixmap, QPalette
 from PySide6.QtSvg import QSvgRenderer
 from PySide6.QtWidgets import QApplication
+import res.resources_rc  # noqa: F401  # registriert die Qt-Ressourcen (Icons) beim Import
 
 logger = logging.getLogger(__name__)
 
-_ICON_MAP: dict[str, str] = {
-    "folder-plus": ":/icons/folder-plus.svg",
-    "log-out": ":/icons/log-out.svg",
-    "settings": ":/icons/settings.svg",
-    "folder": ":/icons/folder.svg",
-    "refresh-cw": ":/icons/refresh-cw.svg",
-    "plus-circle": ":/icons/plus-circle.svg",
-    "minus-circle": ":/icons/minus-circle.svg",
-    "play-circle": ":/icons/play-circle.svg",
-    "file": ":/icons/file.svg",
-    "check-circle": ":/icons/check-circle.svg",
-    "info": ":/icons/info.svg",
-    "git-branch": ":/icons/git-branch.svg",
-    "file-text": ":/icons/file-text.svg",
-    "code": ":/icons/code.svg",
-    "chevron-down": ":/icons/chevron-down.svg",
-    "chevron-up": ":/icons/chevron-up.svg",
-    "trash-2": ":/icons/trash-2.svg",
-    "file-plus": ":/icons/file-plus.svg",
-    "columns": ":/icons/columns.svg",
-    "sliders": ":/icons/sliders.svg",
-}
+# Cache: (Icon-Name, Theme-Textfarbe) → fertig gerendertes QIcon.
+# Der Farb-Anteil im Schlüssel sorgt dafür, dass ein Theme-Wechsel automatisch
+# neue Einträge erzeugt, ohne dass der Cache explizit geleert werden muss.
+_ICON_CACHE: dict[tuple[str, bytes], QIcon] = {}
 
 
 def icon(name: str) -> QIcon:
     """
-    Lädt ein Icon aus dem Qt-Ressource-System und färbt es mit der aktuellen Palette-Farbe.
+    Lädt ein Feather-Icon aus dem Qt-Ressource-System und färbt es mit der aktuellen Palette-Farbe.
 
     Args:
         name: Feather-Icon-Name (z.B. "folder-plus", "settings")
@@ -40,10 +23,7 @@ def icon(name: str) -> QIcon:
     Returns:
         QIcon in der Textfarbe des aktiven Themes, oder leerer QIcon bei unbekanntem Namen
     """
-    path = _ICON_MAP.get(name)
-    if path is None:
-        logger.warning(f"Unbekannter Icon-Name: {name!r}")
-        return QIcon()
+    path = f":/icons/{name}.svg"
 
     app = QApplication.instance()
     if app is None:
@@ -51,6 +31,10 @@ def icon(name: str) -> QIcon:
 
     color = app.palette().color(QPalette.ColorRole.WindowText).name().encode()
 
+    cache_key = (name, color)
+    if (cached := _ICON_CACHE.get(cache_key)) is not None:
+        return cached
+
     f = QFile(path)
     if not f.open(QFile.OpenModeFlag.ReadOnly):
         logger.warning(f"Icon konnte nicht geöffnet werden: {path}")
@@ -69,4 +53,5 @@ def icon(name: str) -> QIcon:
         painter.end()
         result.addPixmap(pixmap)
 
+    _ICON_CACHE[cache_key] = result
     return result
diff --git a/src/main.py b/src/main.py
index 1b7cdcd..86f3809 100644
--- a/src/main.py
+++ b/src/main.py
@@ -98,9 +98,6 @@ def main():
     if icon_path.exists():
         app.setWindowIcon(QIcon(str(icon_path)))
 
-    # Qt-Ressourcen registrieren (Icons)
-    import res.resources_rc  # noqa: F401
-
     # Hauptfenster erstellen
     window = MainWindow()
 
diff --git a/uv.lock b/uv.lock
index 6a63f99..b6a2a85 100644
--- a/uv.lock
+++ b/uv.lock
@@ -39,7 +39,7 @@ wheels = [
 
 [[package]]
 name = "documentor"
-version = "1.7.0"
+version = "1.7.1"
 source = { virtual = "." }
 dependencies = [
     { name = "connectorx" },