diff --git a/README.md b/README.md
index bbbeae1..74db3e6 100644
--- a/README.md
+++ b/README.md
@@ -29,10 +29,12 @@ python3 scan.py /path/to/directory [options]
 ```
 
 ### Options:
-- `-f, --filetype`: Filter by file types (e.g., `.txt`, `.log`).
-- `-i, --ignore`: Ignore files and folders containing specific strings.
-- `--ignore-hidden`: Omit hidden directories from the scan.
-- `-v, --verbose`: Enable verbose mode for detailed output.
+
+To show the help page execute:
+
+```bash
+python3 scan.py /path/to/directory --help
+```
 
 ## ⚠️ Caution
 
diff --git a/scan.py b/scan.py
index 7595d4b..e399be7 100644
--- a/scan.py
+++ b/scan.py
@@ -57,19 +57,26 @@ class DirectoryHandler:
             dirs[:] = [d for d in dirs if not d.startswith('.')]
         dirs[:] = [d for d in dirs if not any(ig in d for ig in ignore_strings)]
 
-    @staticmethod
-    def should_print_file(file_path, file_filters, ignore_strings, ignore_hidden, include_strings):
-        """Determine if a file should be printed."""
+    def should_print_file(file_path, file_filters, ignore_strings, ignore_hidden, whitelist_file, whitelist_content):
+        """Determine if a file should be printed based on new criteria."""
         if ignore_hidden and os.path.basename(file_path).startswith('.'):
             return False
         if file_filters and not any(file_path.endswith(file_type) for file_type in file_filters):
             return False
         if any(ignore_str in file_path for ignore_str in ignore_strings):
             return False
-        if include_strings and not any(include_str in file_path for include_str in include_strings):
+        if whitelist_file and not any(whitelist_str in file_path for whitelist_str in whitelist_file):
             return False
+        if whitelist_content:
+            try:
+                with open(file_path, 'r') as f:
+                    content = f.read()
+                if not any(whitelist_str in content for whitelist_str in whitelist_content):
+                    return False
+            except UnicodeDecodeError:
+                return False
         return True
-
+    
     @staticmethod
     def print_file_content(file_path, no_comments, compress):
         """Print the content of a file."""
@@ -97,7 +104,7 @@ class DirectoryHandler:
         for root, dirs, files in os.walk(directory):
             DirectoryHandler.filter_directories(dirs, kwargs['ignore_strings'], kwargs['ignore_hidden'])
             for file in files:
-                if DirectoryHandler.should_print_file(os.path.join(root, file), kwargs['file_filters'], kwargs['ignore_strings'], kwargs['ignore_hidden'], kwargs['strings']):
+                if DirectoryHandler.should_print_file(os.path.join(root, file), kwargs['file_filters'], kwargs['ignore_strings'], kwargs['ignore_hidden'], kwargs['whitelist_file'], kwargs['whitelist_content']):
                     DirectoryHandler.print_file_content(os.path.join(root, file), kwargs['no_comments'], kwargs['compress'])
                 elif kwargs['verbose']:
                     print(f"Skipped file: {file}")
@@ -116,15 +123,16 @@ def main():
     parser.add_argument("--ignore-hidden", action='store_true', help="Ignore hidden directories and files.")
     parser.add_argument("-v", "--verbose", action='store_true', help="Enable verbose mode.")
     parser.add_argument("--no-comments", action='store_true', help="Remove comments from the displayed content based on file type.")
-    parser.add_argument("-s", "--strings", nargs='+', default=[], help="Only display files whose paths contain one of these strings.")
     parser.add_argument("--compress", action='store_true', help="Compress code (for Python files).")
+    parser.add_argument("--whitelist-file", nargs='+', default=[], help="Only display files whose paths contain one of these strings.")
+    parser.add_argument("--whitelist-content", nargs='+', default=[], help="Only display files containing one of these strings in their content.")
     args = parser.parse_args()
     
     for path in args.paths:
         if os.path.isdir(path):
-            DirectoryHandler.handle_directory(path, file_filters=args.filetype, ignore_strings=args.ignore, ignore_hidden=args.ignore_hidden, verbose=args.verbose, no_comments=args.no_comments, compress=args.compress, strings=args.strings)
+            DirectoryHandler.handle_directory(path, file_filters=args.filetype, ignore_strings=args.ignore, ignore_hidden=args.ignore_hidden, verbose=args.verbose, no_comments=args.no_comments, compress=args.compress, whitelist_file=args.whitelist_file, whitelist_content=args.whitelist_content)
         elif os.path.isfile(path):
-            if DirectoryHandler.should_print_file(path, file_filters=args.filetype, ignore_strings=args.ignore, ignore_hidden=args.ignore_hidden, include_strings=args.strings):
+            if DirectoryHandler.should_print_file(path, file_filters=args.filetype, ignore_strings=args.ignore, ignore_hidden=args.ignore_hidden, whitelist_file=args.whitelist_file, whitelist_content=args.whitelist_content):
                 DirectoryHandler.handle_file(path, file_filters=args.filetype, ignore_strings=args.ignore, ignore_hidden=args.ignore_hidden, no_comments=args.no_comments, compress=args.compress)
         else:
             print(f"Error: {path} is neither a valid file nor a directory.")