diff --git a/secheaders/securityheaders.py b/secheaders/securityheaders.py
index 27a050d..962fcb6 100644
--- a/secheaders/securityheaders.py
+++ b/secheaders/securityheaders.py
@@ -1,4 +1,5 @@
 import argparse
+import asyncio
 import http.client
 import json
 import re
@@ -194,10 +195,32 @@ def get_full_url(self) -> str:
         return f"{self.protocol_scheme}://{self.hostname}{self.path}"
 
 
+def scan_target(url, args):
+    try:
+        header_check = SecurityHeaders(url, args.max_redirects, args.insecure)
+        header_check.fetch_headers()
+        headers = header_check.check_headers()
+    except SecurityHeadersException as e:
+        print(e, file=sys.stderr)
+        sys.exit(1)
+
+    if not headers:
+        print("Failed to fetch headers, exiting...", file=sys.stderr)
+        sys.exit(1)
+
+    https = header_check.test_https()
+    if args.json:
+        return json.dumps({'target': header_check.get_full_url(), 'headers': headers, 'https': https}, indent=2)
+
+    return cmd_utils.output_text(header_check.get_full_url(), headers, https, args)
+
+
 def main():
     parser = argparse.ArgumentParser(description='Scan HTTP security headers',
                                      formatter_class=argparse.ArgumentDefaultsHelpFormatter)
-    parser.add_argument('url', metavar='URL', type=str, help='Target URL')
+    parser.add_argument('url', metavar='URL', nargs='?', default=None, type=str, help='Target URL')
+    parser.add_argument('--target-list', dest='target_list', metavar='FILE', default=None, type=str,
+                        help='Input from list of target URLs')
     parser.add_argument('--max-redirects', dest='max_redirects', metavar='N', default=2, type=int,
                         help='Max redirects, set 0 to disable')
     parser.add_argument('--insecure', dest='insecure', action='store_true',
@@ -207,23 +230,36 @@ def main():
     parser.add_argument('--verbose', '-v', dest='verbose', action='store_true',
                         help='Verbose output')
     args = parser.parse_args()
-    try:
-        header_check = SecurityHeaders(args.url, args.max_redirects, args.insecure)
-        header_check.fetch_headers()
-        headers = header_check.check_headers()
-    except SecurityHeadersException as e:
-        print(e, file=sys.stderr)
-        sys.exit(1)
 
-    if not headers:
-        print("Failed to fetch headers, exiting...", file=sys.stderr)
+    if not args.url and not args.target_list:
+        print("No target url provided.", file=sys.stderr)
+        parser.print_usage(sys.stderr)
         sys.exit(1)
 
-    https = header_check.test_https()
-    if args.json:
-        print(json.dumps({'target': header_check.get_full_url(), 'headers': headers, 'https': https}, indent=2))
-    else:
-        print(cmd_utils.output_text(header_check.get_full_url(), headers, https, args))
+    if args.url:
+        print(scan_target(args.url, args))
+    elif args.target_list:
+        asyncio.run(scan_multiple_targets(args))
+
+
+def done(f):
+    print(f.result())
+    print("========================\n")
+
+
+async def scan_multiple_targets(args):
+    with open(args.target_list, encoding='utf-8') as file:
+        targets = [line.rstrip() for line in file]
+
+    loop = asyncio.get_event_loop()
+    tasks = []
+    for t in targets:
+        task = loop.run_in_executor(None, scan_target, t, args)
+        task.add_done_callback(done)
+        tasks.append(task)
+
+    for task in tasks:
+        await task
 
 
 if __name__ == "__main__":