diff --git a/config.yaml b/config.yaml
new file mode 100644
index 0000000..9dc174b
--- /dev/null
+++ b/config.yaml
@@ -0,0 +1,37 @@
+# config for Jellyfin file modificator for customization
+start_directory: '.'  # Startverzeichnis für die Suche
+
+modifications:
+  - file_pattern: 'session-login-index-html\..*\.bundle\.js'
+    insert_rules:
+      - after_text: '<div class="padded-left padded-right padded-bottom-page margin-auto-y">'
+        insert_text: '<img src="/web/logo.png" width=350px style="padding: 0px;display:block; margin-left: auto; margin-right: auto;">'
+
+  # Instancename, Jellyseer I-Frame
+  - file_pattern: 'index.html'
+    insert_rules:
+      - before_text: '<link href="{*}" rel="stylesheet">'
+        insert_text: 'New content to insert'
+    replace_rules:
+      - old_text: '<title>Jellyfin</title>'
+        new_text: '<title>SpaceCloud - Cinema</title>'
+
+
+
+
+  - file_pattern: 'another-file-pattern\.js'
+    insert_rules:
+      - before_text: 'specific-text-to-search-for'
+        insert_text: 'Neuer Inhalt vor dem Zieltext'
+      
+      - after_text: 'another-specific-text'
+        insert_text: 'Neuer Inhalt nach dem Zieltext'
+
+  - file_pattern: '\.js$'
+    replace_rules:
+      - old_text: 'const version = '
+        new_text: 'const version = '
+    
+    insert_rules:
+      - before_text: 'function initializeApp() {'
+        insert_text: '// Neue Initialisierungsvorbereitungen'
\ No newline at end of file
diff --git a/customize-WebUI internal config test.py b/customize-WebUI internal config test.py
new file mode 100644
index 0000000..446125f
--- /dev/null
+++ b/customize-WebUI internal config test.py	
@@ -0,0 +1,92 @@
+import os
+import re
+import sys
+
+# Konfiguration direkt im Skript
+MODIFICATIONS = [
+    {
+        'file_pattern': r'session-login-index-html\..*\.bundle\.js',
+        'rules': [
+            {
+                'after_text': '<div class="padded-left padded-right padded-bottom-page margin-auto-y">',
+                'insert_text': '<img src="/web/logo.png" width=350px style="padding: 0px;display:block; margin-left: auto; margin-right: auto;">'
+            },
+            {
+                'after_text': '<div class="another-specific-div">',
+                'insert_text': '<p>Zusätzlicher Informationstext</p>'
+            }
+        ]
+    },
+    {
+        'file_pattern': r'another-file-pattern\.js',
+        'rules': [
+            {
+                'after_text': 'specific-text-to-search-for',
+                'insert_text': 'New content to insert'
+            }
+        ]
+    }
+]
+
+def modify_files(start_directory='.'):
+    """
+    Modifiziert Dateien basierend auf vordefinierter Konfiguration.
+    
+    :param start_directory: Startverzeichnis für die Suche
+    """
+    files_modified = 0
+    
+    # Durch jede Konfiguration gehen
+    for config in MODIFICATIONS:
+        search_pattern = config['file_pattern']
+        insert_rules = config['rules']
+        
+        # Rekursive Suche ab dem Startverzeichnis
+        for root, dirs, files in os.walk(start_directory):
+            for filename in files:
+                # Überprüfe Dateinamenmuster
+                if re.search(search_pattern, filename):
+                    full_path = os.path.join(root, filename)
+                    
+                    try:
+                        with open(full_path, 'r', encoding='utf-8') as file:
+                            content = file.read()
+                        
+                        modified = False
+                        modified_content = content
+                        
+                        # Durchlaufe alle Einfügeregeln für diese Datei
+                        for rule in insert_rules:
+                            search_text = rule['after_text']
+                            insert_text = rule['insert_text']
+                            
+                            # Prüfe, ob der Einfügetext bereits vorhanden ist
+                            if insert_text not in modified_content:
+                                modified_content = modified_content.replace(
+                                    search_text, 
+                                    f'{search_text}\n{insert_text}'
+                                )
+                                modified = True
+                        
+                        # Speichere die Datei, wenn Änderungen vorgenommen wurden
+                        if modified:
+                            with open(full_path, 'w', encoding='utf-8') as file:
+                                file.write(modified_content)
+                            
+                            files_modified += 1
+                            print(f'Modifiziert: {full_path}')
+                    
+                    except Exception as e:
+                        print(f'Fehler bei Datei {full_path}: {e}')
+    
+    print(f'\nAnzahl modifizierter Dateien: {files_modified}')
+
+def main():
+    # Optionaler Startpfad als Argument
+    start_directory = sys.argv[1] if len(sys.argv) > 1 else '.'
+    
+    print(f'Suche ab Verzeichnis: {os.path.abspath(start_directory)}')
+    modify_files(start_directory)
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file
diff --git a/customize-WebUI-V3.py b/customize-WebUI-V3.py
new file mode 100644
index 0000000..a3df79e
--- /dev/null
+++ b/customize-WebUI-V3.py
@@ -0,0 +1,95 @@
+import os
+import re
+import sys
+import yaml
+
+def modify_files(config_path):
+    """
+    Modifiziert Dateien basierend auf einer YAML-Konfigurationsdatei.
+    
+    :param config_path: Pfad zur Konfigurationsdatei
+    """
+    # load config
+    with open(config_path, 'r', encoding='utf-8') as config_file:
+        config = yaml.safe_load(config_file)
+    
+    files_modified = 0
+    
+    # iterate trough every config
+    for entry in config['modifications']:
+        search_pattern = entry.get('file_pattern')
+        insert_rules = entry.get('insert_rules', [])
+        replace_rules = entry.get('replace_rules', [])
+        
+        # recursiv search starting at start dir
+        for root, dirs, files in os.walk(config.get('start_directory', '.')):
+            for filename in files:
+                # check filenamepattern
+                if re.search(search_pattern, filename):
+                    full_path = os.path.join(root, filename)
+                    
+                    try:
+                        with open(full_path, 'r', encoding='utf-8') as file:
+                            content = file.read()
+                        
+                        modified = False
+                        modified_content = content
+                        
+                        # iterate trough insert rules
+                        for rule in insert_rules:
+                            insert_text = rule.get('insert_text')
+                            
+                            # insert after specific text
+                            if 'after_text' in rule:
+                                search_text = rule.get('after_text')
+                                if insert_text not in modified_content:
+                                    modified_content = modified_content.replace(
+                                        search_text, 
+                                        f'{search_text}\n{insert_text}'
+                                    )
+                                    modified = True
+                            
+                            # insert before spicific text
+                            elif 'before_text' in rule:
+                                search_text = rule.get('before_text')
+                                if insert_text not in modified_content:
+                                    modified_content = modified_content.replace(
+                                        search_text, 
+                                        f'{insert_text}\n{search_text}'
+                                    )
+                                    modified = True
+                        
+                        # iterate replace rules
+                        for rule in replace_rules:
+                            old_text = rule.get('old_text')
+                            new_text = rule.get('new_text')
+                            
+                            # check, if the text to be replaced, exists
+                            if old_text in modified_content:
+                                modified_content = modified_content.replace(old_text, new_text)
+                                modified = True
+                        
+                        # save changed files
+                        if modified:
+                            with open(full_path, 'w', encoding='utf-8') as file:
+                                file.write(modified_content)
+                            
+                            files_modified += 1
+                            print(f'Modified: {full_path}')
+                    
+                    except Exception as e:
+                        print(f'Error modifying file {full_path}: {e}')
+    
+    print(f'\nAnzahl modifizierter Dateien: {files_modified}')
+
+def main():
+    # path of config file as argument
+    if len(sys.argv) < 2:
+        print("Error: Provide a path to the config.yaml file")
+        sys.exit(1)
+    
+    config_path = sys.argv[1]
+    modify_files(config_path)
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file
diff --git a/customize-WebUI.py b/customize-WebUI.py
new file mode 100644
index 0000000..1ae1c35
--- /dev/null
+++ b/customize-WebUI.py
@@ -0,0 +1,150 @@
+import os
+import re
+import sys
+import yaml
+
+def load_configuration(config_path):
+    """
+    Load configuration from a YAML file.
+    
+    :param config_path: Path to the configuration file
+    :return: Loaded configuration dictionary
+    """
+    with open(config_path, 'r', encoding='utf-8') as config_file:
+        return yaml.safe_load(config_file)
+
+def matches_file_pattern(filename, pattern):
+    """
+    Check if filename matches the given pattern.
+    
+    :param filename: Name of the file
+    :param pattern: Regex pattern to match
+    :return: Boolean indicating if filename matches
+    """
+    return re.search(pattern, filename) is not None
+
+def apply_insert_rules(content, insert_rules):
+    """
+    Apply insertion rules to the content.
+    
+    :param content: Original file content
+    :param insert_rules: List of insertion rules
+    :return: Modified content and modification flag
+    """
+    modified_content = content
+    modified = False
+
+    for rule in insert_rules:
+        insert_text = rule.get('insert_text')
+        
+        # Insert after specific text
+        if 'after_text' in rule:
+            search_text = rule.get('after_text')
+            if insert_text not in modified_content:
+                modified_content = modified_content.replace(
+                    search_text, 
+                    f'{search_text}\n{insert_text}'
+                )
+                modified = True
+        
+        # Insert before specific text
+        elif 'before_text' in rule:
+            search_text = rule.get('before_text')
+            if insert_text not in modified_content:
+                modified_content = modified_content.replace(
+                    search_text, 
+                    f'{insert_text}\n{search_text}'
+                )
+                modified = True
+
+    return modified_content, modified
+
+def apply_replace_rules(content, replace_rules):
+    """
+    Apply replacement rules to the content.
+    
+    :param content: Original file content
+    :param replace_rules: List of replacement rules
+    :return: Modified content and modification flag
+    """
+    modified_content = content
+    modified = False
+
+    for rule in replace_rules:
+        old_text = rule.get('old_text')
+        new_text = rule.get('new_text')
+        
+        # Replace text if found
+        if old_text in modified_content:
+            modified_content = modified_content.replace(old_text, new_text)
+            modified = True
+
+    return modified_content, modified
+
+def modify_files(config):
+    """
+    Modify files based on configuration rules.
+    
+    :param config: Configuration dictionary
+    :return: Number of modified files
+    """
+    files_modified = 0
+    start_directory = config.get('start_directory', '.')
+
+    # Process each modification entry
+    for entry in config.get('modifications', []):
+        search_pattern = entry.get('file_pattern')
+        insert_rules = entry.get('insert_rules', [])
+        replace_rules = entry.get('replace_rules', [])
+
+        # Walk through directory
+        for root, _, files in os.walk(start_directory):
+            for filename in files:
+                # Check if file matches pattern
+                if matches_file_pattern(filename, search_pattern):
+                    full_path = os.path.join(root, filename)
+                    
+                    try:
+                        # Read file content
+                        with open(full_path, 'r', encoding='utf-8') as file:
+                            content = file.read()
+                        
+                        # Apply insert rules
+                        content_after_insert, insert_modified = apply_insert_rules(
+                            content, insert_rules
+                        )
+                        
+                        # Apply replace rules
+                        final_content, replace_modified = apply_replace_rules(
+                            content_after_insert, replace_rules
+                        )
+                        
+                        # Save modified file
+                        if insert_modified or replace_modified:
+                            with open(full_path, 'w', encoding='utf-8') as file:
+                                file.write(final_content)
+                            
+                            files_modified += 1
+                            print(f'Modified: {full_path}')
+                    
+                    except Exception as e:
+                        print(f'Error processing file {full_path}: {e}')
+    
+    return files_modified
+
+def main():
+    # Check command-line argument
+    if len(sys.argv) < 2:
+        print("Please provide the path to the configuration file.")
+        sys.exit(1)
+    
+    config_path = sys.argv[1]
+    
+    # Load configuration and modify files
+    config = load_configuration(config_path)
+    total_modified = modify_files(config)
+    
+    print(f'\nTotal files modified: {total_modified}')
+
+if __name__ == '__main__':
+    main()
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