diff --git a/presente/tables.py b/presente/tables.py
index 44dfa00..17f2b11 100644
--- a/presente/tables.py
+++ b/presente/tables.py
@@ -88,7 +88,7 @@ class ActivityAttendanceTable(django_tables2.Table):
         accessor="user",
         verbose_name=_("Nome"),
         orderable=True,
-        order_by=("user_name_collated", "user__full_name"),
+        order_by=("user__full_name_normalized", "user__full_name"),
     )
     user_type = django_tables2.Column(
         accessor="user__type",
diff --git a/presente/views.py b/presente/views.py
index fe41910..0a874bf 100644
--- a/presente/views.py
+++ b/presente/views.py
@@ -322,20 +322,8 @@ def get_page_title(self):
         return _("Presenças - {}").format(activity.title)
 
     def get_queryset(self):
-        from django.db import connection
-        from django.db.models import F
-
         activity = self.get_activity()
         qs = Attendance.objects.filter(activity=activity).select_related("user")
-
-        if connection.vendor == "postgresql":
-            from django.db.models.functions import Collate
-
-            qs = qs.annotate(user_name_collated=Collate("user__full_name", "pt_BR"))
-        else:
-            # SQLite: just alias the field for compatibility
-            qs = qs.annotate(user_name_collated=F("user__full_name"))
-
         return qs.order_by("-checked_in_at")
 
     def get_context_data(self, **kwargs):
@@ -415,6 +403,7 @@ class ActivityAttendancePDFView(
     template_name = "presente/attendance_pdf.html"
     context_object_name = "attendances"
     pdf_filename = "relatorio_presencas.pdf"
+    pdf_attachment = False  # Display inline in browser instead of downloading
 
     def get_pdf_filename(self):
         activity = self.get_activity()
@@ -434,8 +423,8 @@ def get_queryset(self):
         if sort_by:
             # Map sort fields to actual model fields
             sort_mapping = {
-                "name": "user__full_name",
-                "-name": "-user__full_name",
+                "name": "user__full_name_normalized",
+                "-name": "-user__full_name_normalized",
                 "type": "user__type",
                 "-type": "-user__type",
                 "curso": "user__curso",
@@ -445,10 +434,10 @@ def get_queryset(self):
                 "checked_in_at": "checked_in_at",
                 "-checked_in_at": "-checked_in_at",
             }
-            sort_field = sort_mapping.get(sort_by, "user__full_name")
+            sort_field = sort_mapping.get(sort_by, "user__full_name_normalized")
             qs = qs.order_by(sort_field)
         else:
-            qs = qs.order_by("user__full_name")
+            qs = qs.order_by("user__full_name_normalized")
 
         return qs
 
@@ -457,8 +446,27 @@ def get_context_data(self, **kwargs):
         activity = self.get_activity()
         context["activity"] = activity
 
-        # Get the filtered queryset (after filters are applied)
-        filtered_qs = context["filter"].qs
+        # Get the filtered queryset (after filters are applied) and apply sorting
+        sort_by = self.request.GET.get("sort_by", "name")
+        sort_mapping = {
+            "name": "user__full_name_normalized",
+            "-name": "-user__full_name_normalized",
+            "type": "user__type",
+            "-type": "-user__type",
+            "curso": "user__curso",
+            "-curso": "-user__curso",
+            "periodo": "user__periodo_referencia",
+            "-periodo": "-user__periodo_referencia",
+            "checked_in_at": "checked_in_at",
+            "-checked_in_at": "-checked_in_at",
+        }
+        sort_field = sort_mapping.get(sort_by, "user__full_name_normalized")
+
+        # Apply sorting to the filtered queryset
+        filtered_qs = context["filter"].qs.order_by(sort_field)
+
+        # Store the sorted queryset for the template
+        context["sorted_qs"] = filtered_qs
         context["total_attendances"] = filtered_qs.count()
 
         # Get column configuration
@@ -511,8 +519,8 @@ def get_queryset(self):
         # Apply sorting
         sort_by = self.request.GET.get("sort_by", "name")
         sort_mapping = {
-            "name": "user__full_name",
-            "-name": "-user__full_name",
+            "name": "user__full_name_normalized",
+            "-name": "-user__full_name_normalized",
             "type": "user__type",
             "-type": "-user__type",
             "curso": "user__curso",
@@ -522,7 +530,7 @@ def get_queryset(self):
             "checked_in_at": "checked_in_at",
             "-checked_in_at": "-checked_in_at",
         }
-        sort_field = sort_mapping.get(sort_by, "user__full_name")
+        sort_field = sort_mapping.get(sort_by, "user__full_name_normalized")
         qs = qs.order_by(sort_field)
 
         return qs
@@ -532,6 +540,23 @@ def get(self, request, *args, **kwargs):
         filterset = self.filterset_class(request.GET, queryset=self.get_queryset())
         queryset = filterset.qs
 
+        # Reapply sorting to ensure it's maintained after filtering
+        sort_by = request.GET.get("sort_by", "name")
+        sort_mapping = {
+            "name": "user__full_name_normalized",
+            "-name": "-user__full_name_normalized",
+            "type": "user__type",
+            "-type": "-user__type",
+            "curso": "user__curso",
+            "-curso": "-user__curso",
+            "periodo": "user__periodo_referencia",
+            "-periodo": "-user__periodo_referencia",
+            "checked_in_at": "checked_in_at",
+            "-checked_in_at": "-checked_in_at",
+        }
+        sort_field = sort_mapping.get(sort_by, "user__full_name_normalized")
+        queryset = queryset.order_by(sort_field)
+
         # Get column configuration
         columns = request.GET.getlist("columns")
         if not columns:
@@ -578,7 +603,7 @@ def get(self, request, *args, **kwargs):
             if "number" in columns:
                 row.append(idx)
             if "name" in columns:
-                row.append(attendance.user.get_full_name())
+                row.append(attendance.user.get_full_name().upper())
             if "email" in columns:
                 row.append(attendance.user.email or "-")
             if "matricula" in columns:
diff --git a/templates/core/list.html b/templates/core/list.html
index e00751b..a5f74c6 100644
--- a/templates/core/list.html
+++ b/templates/core/list.html
@@ -41,7 +41,7 @@
   <div class="collapse {% if filters_active %}show{% endif %} mb-3" id="filterCollapse">
     <div class="card">
       <div class="card-body">
-        <form method="get" class="row g-3" hx-get="{{ request.path }}" hx-target="#table-wrapper" hx-push-url="true" hx-trigger="change delay:300ms, submit">
+        <form method="get" id="filter-form" class="row g-3" hx-get="{{ request.path }}" hx-target="#table-wrapper" hx-push-url="true" hx-trigger="change delay:300ms, submit">
           {% for field in filter.form %}
             {% if field.name != 'csrfmiddlewaretoken' %}
             <div class="col-md-4">
diff --git a/templates/presente/activity_attendance_list.html b/templates/presente/activity_attendance_list.html
index 182e79f..c370605 100644
--- a/templates/presente/activity_attendance_list.html
+++ b/templates/presente/activity_attendance_list.html
@@ -5,6 +5,7 @@
   hx-get="{% url 'presente:activity_attendance_export_config' activity.pk %}?{{ request.GET.urlencode }}"
   hx-target="#modals-here .modal-content"
   hx-trigger="click"
+  hx-include="#filter-form"
   data-bs-toggle="modal"
   data-bs-target="#modals-here">
   <i class="bi bi-download"></i> Exportar Relatório
diff --git a/templates/presente/attendance_pdf.html b/templates/presente/attendance_pdf.html
index 3489d7d..514861f 100644
--- a/templates/presente/attendance_pdf.html
+++ b/templates/presente/attendance_pdf.html
@@ -196,7 +196,7 @@ <h3>Filtros Aplicados:</h3>
     <strong>Total de Presenças:</strong> {{ total_attendances }}
   </div>
 
-  {% if filter.qs %}
+  {% if sorted_qs %}
   <table>
     <thead>
       <tr>
@@ -212,10 +212,10 @@ <h3>Filtros Aplicados:</h3>
       </tr>
     </thead>
     <tbody>
-      {% for attendance in filter.qs %}
+      {% for attendance in sorted_qs %}
       <tr>
         {% if "number" in columns %}<td>{{ forloop.counter }}</td>{% endif %}
-        {% if "name" in columns %}<td>{{ attendance.user.get_full_name }}</td>{% endif %}
+        {% if "name" in columns %}<td>{{ attendance.user.get_full_name|upper }}</td>{% endif %}
         {% if "email" in columns %}<td>{{ attendance.user.email|default:"-" }}</td>{% endif %}
         {% if "matricula" in columns %}<td>{{ attendance.user.matricula|default:"-" }}</td>{% endif %}
         {% if "type" in columns %}<td>{{ attendance.user.get_type_display }}</td>{% endif %}
diff --git a/templates/presente/includes/attendance_export_config_modal.html b/templates/presente/includes/attendance_export_config_modal.html
index 6d10582..98312a6 100644
--- a/templates/presente/includes/attendance_export_config_modal.html
+++ b/templates/presente/includes/attendance_export_config_modal.html
@@ -11,9 +11,7 @@ <h5 class="modal-title">
 
     <!-- Preserve filter parameters -->
     {% for key, value in filter_params.items %}
-      {% if key not in "columns,sort_by" %}
       <input type="hidden" name="{{ key }}" value="{{ value }}">
-      {% endif %}
     {% endfor %}
 
     <div class="mb-4">
diff --git a/users/migrations/0010_user_full_name_normalized.py b/users/migrations/0010_user_full_name_normalized.py
new file mode 100644
index 0000000..cfeb1f0
--- /dev/null
+++ b/users/migrations/0010_user_full_name_normalized.py
@@ -0,0 +1,18 @@
+# Generated by Django 5.2.7 on 2025-12-04 04:56
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('users', '0009_remove_is_published'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='user',
+            name='full_name_normalized',
+            field=models.CharField(blank=True, db_index=True, help_text='Nome sem acentos para ordenação', max_length=255, null=True, verbose_name='Nome normalizado'),
+        ),
+    ]
diff --git a/users/migrations/0011_populate_full_name_normalized.py b/users/migrations/0011_populate_full_name_normalized.py
new file mode 100644
index 0000000..e1471b7
--- /dev/null
+++ b/users/migrations/0011_populate_full_name_normalized.py
@@ -0,0 +1,34 @@
+# Generated by Django 5.2.7 on 2025-12-04 04:56
+
+from django.db import migrations
+import unicodedata
+
+
+def populate_normalized_names(apps, schema_editor):
+    User = apps.get_model('users', 'User')
+    for user in User.objects.all():
+        if user.full_name:
+            # NFD = Canonical Decomposition (separates base chars from accents)
+            nfd = unicodedata.normalize('NFD', user.full_name)
+            # Filter out combining characters (accents) and convert to uppercase
+            user.full_name_normalized = ''.join(
+                char for char in nfd
+                if unicodedata.category(char) != 'Mn'
+            ).upper()
+            user.save(update_fields=['full_name_normalized'])
+
+
+def reverse_populate(apps, schema_editor):
+    User = apps.get_model('users', 'User')
+    User.objects.update(full_name_normalized=None)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('users', '0010_user_full_name_normalized'),
+    ]
+
+    operations = [
+        migrations.RunPython(populate_normalized_names, reverse_populate),
+    ]
diff --git a/users/models.py b/users/models.py
index 0f867f9..2a5b477 100644
--- a/users/models.py
+++ b/users/models.py
@@ -2,6 +2,7 @@
 from django.contrib.auth.models import AbstractUser
 from django.utils.translation import gettext_lazy as _
 from .managers import CustomUserManager
+import unicodedata
 
 
 class User(AbstractUser):
@@ -20,6 +21,14 @@ class UserType(models.TextChoices):
         null=True,
         help_text=_("Nome completo do usuário (usa nome social se disponível)"),
     )
+    full_name_normalized = models.CharField(
+        _("Nome normalizado"),
+        max_length=255,
+        blank=True,
+        null=True,
+        help_text=_("Nome sem acentos para ordenação"),
+        db_index=True,
+    )
     type = models.CharField(
         _("Tipo"),
         max_length=20,
@@ -72,6 +81,18 @@ class Meta:
     def save(self, *args, **kwargs):
         if not self.username:
             self.username = self.email
+
+        # Normalize full_name for sorting (remove accents and normalize case)
+        if self.full_name:
+            # NFD = Canonical Decomposition (separates base chars from accents)
+            nfd = unicodedata.normalize("NFD", self.full_name)
+            # Filter out combining characters (accents) and convert to uppercase
+            self.full_name_normalized = "".join(
+                char for char in nfd if unicodedata.category(char) != "Mn"
+            ).upper()
+        else:
+            self.full_name_normalized = None
+
         super().save(*args, **kwargs)
 
     @property
diff --git a/users/tables.py b/users/tables.py
index 8af0871..71a8db4 100644
--- a/users/tables.py
+++ b/users/tables.py
@@ -8,7 +8,7 @@ class UserTable(CoreTable):
     full_name = tables.Column(
         verbose_name=_("Nome"),
         empty_values=(),
-        order_by=("full_name_collated", "full_name"),
+        order_by=("full_name_normalized", "full_name"),
     )
     matricula = tables.Column(verbose_name=_("Matrícula"), empty_values=())
     type = tables.Column(verbose_name=_("Tipo"), empty_values=())
diff --git a/users/views.py b/users/views.py
index 12d8f51..35df9f0 100644
--- a/users/views.py
+++ b/users/views.py
@@ -30,7 +30,7 @@ class ExcludeAdminMixin:
 
     def get_queryset(self):
         base_qs = super().get_queryset()
-        return base_qs.exclude(id=self.admin_id).order_by("id")
+        return base_qs.exclude(id=self.admin_id)
 
 
 class CustomPasswordResetFromKeyView(PasswordResetFromKeyView):
@@ -44,23 +44,9 @@ class UserListView(ExcludeAdminMixin, CoreFilterView):
     filterset_class = UserFilter
 
     def get_queryset(self):
-        from django.db import connection
-        from django.db.models import F
-
         queryset = super().get_queryset()
         # Prefetch social accounts to avoid N+1 queries when accessing matricula
         queryset = queryset.prefetch_related("socialaccount_set")
-
-        if connection.vendor == "postgresql":
-            from django.db.models.functions import Collate
-
-            queryset = queryset.annotate(
-                full_name_collated=Collate("full_name", "pt_BR")
-            )
-        else:
-            # SQLite: just alias the field for compatibility
-            queryset = queryset.annotate(full_name_collated=F("full_name"))
-
         return queryset