diff --git a/gp_saml_gui.py b/gp_saml_gui.py
index a046e53..35aa729 100755
--- a/gp_saml_gui.py
+++ b/gp_saml_gui.py
@@ -29,6 +29,9 @@
 import xml.etree.ElementTree as ET
 import ssl
 import tempfile
+import configparser
+import itertools
+import json
 
 from operator import setitem
 from os import path, dup2, execvp, environ
@@ -53,7 +56,6 @@ def handle_comment(self, data: str) -> None:
 
 class SAMLLoginView:
     def __init__(self, uri, html, args):
-
         Gtk.init(None)
         self.window = window = Gtk.Window()
 
@@ -83,6 +85,19 @@ def __init__(self, uri, html, args):
         settings.set_user_agent(args.user_agent)
         self.wview.set_settings(settings)
 
+        if args.login:
+            args.login = path.expanduser(args.login)
+            self.login = {}
+            config = configparser.ConfigParser()
+            try:
+                config.read(args.login)
+            except:
+                print("Error opening or reading '%s'" % args.login)
+                config = None
+            if config and config.has_section(args.server):
+                for x in config[args.server]:
+                    self.login[x] = config[args.server][x]
+
         window.resize(500, 500)
         window.add(self.wview)
         window.show_all()
@@ -95,7 +110,7 @@ def __init__(self, uri, html, args):
             self.wview.load_html(html, uri)
         else:
             self.wview.load_uri(uri)
-
+        
     def close(self, window, event):
         self.closed = True
         Gtk.main_quit()
@@ -129,6 +144,14 @@ def log_resource_text(self, resource, result, content_type, charset=None, show_h
         if charset or content_type.startswith('text/'):
             print(data.decode(charset or 'utf-8'), file=stderr)
 
+    def setvalue_DOM_element(self, selector, value):
+        if self.wview:
+            # name attibute
+            self.wview.evaluate_javascript("Array.from(document.getElementsByName(%s)).forEach(el => el.value = %s);" % (json.dumps(selector), json.dumps(value)), -1, None, None, None, None, None)
+            
+            # id attribute 
+            self.wview.evaluate_javascript("document.getElementById(%s).value = %s;" % (json.dumps(selector), json.dumps(value)), -1, None, None, None, None, None)
+
     def on_load_changed(self, webview, event):
         if event != WebKit2.LoadEvent.FINISHED:
             return
@@ -149,6 +172,10 @@ def on_load_changed(self, webview, event):
         if not rs or not h:
             return
 
+        # Set login credentials
+        for x in self.login:
+            self.setvalue_DOM_element(x, self.login[x])
+        
         # convert to normal dict
         d = {}
         h.foreach(lambda k, v: setitem(d, k.lower(), v))
@@ -290,6 +317,8 @@ def parse_args(args = None):
     x.add_argument('-E','--exec-openconnect', action='store_const', dest='exec', const='exec', help='Execute openconnect directly (advanced users)')
     g.add_argument('-u','--uri', action='store_true', help='Treat server as the complete URI of the SAML entry point, rather than GlobalProtect server')
     g.add_argument('--clientos', choices=set(pf2clientos.values()), default=default_clientos, help="clientos value to send (default is %(default)s)")
+    p.add_argument('-l','--login', default='~/.gp-saml-gui-credentials',
+                   help='Read login credentials from the file specified (instead of default %(default)s)')
     p.add_argument('-f','--field', dest='extra', action='append', default=[],
                    help='Extra form field(s) to pass to include in the login query string (e.g. "-f magic-cookie-value=deadbeef01234567")')
     p.add_argument('--allow-insecure-crypto', dest='insecure', action='store_true',