diff --git a/userManagment/templates/userManagment/createUser.html b/userManagment/templates/userManagment/createUser.html
index 8c0b48297..cd79a58e6 100644
--- a/userManagment/templates/userManagment/createUser.html
+++ b/userManagment/templates/userManagment/createUser.html
@@ -1,5 +1,6 @@
 {% extends "baseTemplate/index.html" %}
 {% load i18n %}
+{% load user_filters %}
 {% block title %}{% trans "Create New User - CyberPanel" %}{% endblock %}
 {% block content %}
 
diff --git a/userManagment/templatetags/__init__.py b/userManagment/templatetags/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/userManagment/templatetags/user_filters.py b/userManagment/templatetags/user_filters.py
new file mode 100644
index 000000000..0cf01136c
--- /dev/null
+++ b/userManagment/templatetags/user_filters.py
@@ -0,0 +1,21 @@
+"""
+Custom Django template filters for user management
+"""
+from django import template
+from django.template.defaultfilters import filesizeformat
+
+register = template.Library()
+
+
+@register.filter(name='filesize')
+def filesize_filter(value):
+    """
+    Alias for Django's filesizeformat filter to maintain compatibility
+    with templates that use |filesize instead of |filesizeformat
+    """
+    if value is None:
+        return '0 B'
+    try:
+        return filesizeformat(value)
+    except (ValueError, TypeError):
+        return '0 B'
diff --git a/websiteFunctions/templates/websiteFunctions/modifyWebsite.html b/websiteFunctions/templates/websiteFunctions/modifyWebsite.html
index ab289504c..28eaa6fcf 100644
--- a/websiteFunctions/templates/websiteFunctions/modifyWebsite.html
+++ b/websiteFunctions/templates/websiteFunctions/modifyWebsite.html
@@ -1,5 +1,6 @@
 {% extends "baseTemplate/index.html" %}
 {% load i18n %}
+{% load website_filters %}
 {% block title %}{% trans "Modify Website - CyberPanel" %}{% endblock %}
 
 {% block header_scripts %}
diff --git a/websiteFunctions/templatetags/__init__.py b/websiteFunctions/templatetags/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/websiteFunctions/templatetags/website_filters.py b/websiteFunctions/templatetags/website_filters.py
new file mode 100644
index 000000000..0cf01136c
--- /dev/null
+++ b/websiteFunctions/templatetags/website_filters.py
@@ -0,0 +1,21 @@
+"""
+Custom Django template filters for user management
+"""
+from django import template
+from django.template.defaultfilters import filesizeformat
+
+register = template.Library()
+
+
+@register.filter(name='filesize')
+def filesize_filter(value):
+    """
+    Alias for Django's filesizeformat filter to maintain compatibility
+    with templates that use |filesize instead of |filesizeformat
+    """
+    if value is None:
+        return '0 B'
+    try:
+        return filesizeformat(value)
+    except (ValueError, TypeError):
+        return '0 B'