diff --git a/config.py b/config.py
index 45ac71b..e24b1f7 100644
--- a/config.py
+++ b/config.py
@@ -25,6 +25,7 @@ INSTALLED_APPS.extend([
     'anymail',
     'ivatar',
     'ivatar.ivataraccount',
+    'ivatar.tools',
 ])
 
 from ivatar.settings import MIDDLEWARE  # noqa
diff --git a/ivatar/tools/forms.py b/ivatar/tools/forms.py
new file mode 100644
index 0000000..f09ed12
--- /dev/null
+++ b/ivatar/tools/forms.py
@@ -0,0 +1,64 @@
+'''
+Classes for our ivatar.tools.forms
+'''
+from django import forms
+from django.utils.translation import ugettext_lazy as _
+from django.core.exceptions import ValidationError
+
+
+class CheckDomainForm(forms.Form):
+    '''
+    Form handling domain check
+    '''
+    can_distribute = forms.TextInput(
+        attrs={
+            'label': _('Domain'),
+            'required': True,
+            'error_messages': {
+                'required':
+                _('Cannot check without a domain name.')
+            }
+        }
+    )
+
+
+class CheckForm(forms.Form):
+    '''
+    Form handling check
+    '''
+    mail = forms.EmailField(
+        label=_('E-Mail'),
+        required=False,
+        error_messages={
+            'required':
+            _('Cannot check without a domain name.')
+        })
+
+    openid = forms.CharField(
+        label=_('OpenID'),
+        required=False,
+        error_messages={
+            'required':
+            _('Cannot check without an openid name.')
+        })
+
+    size = forms.IntegerField(
+        label=_('Size'),
+        initial=80,
+        min_value=10,
+        max_value=160,
+        required=True,
+    )
+
+    default_url = forms.URLField(
+        label=_('Default URL'),
+        required=False,
+    )
+
+    def clean(self):
+        self.cleaned_data = super().clean()
+        mail = self.cleaned_data.get('mail')
+        openid = self.cleaned_data.get('openid')
+        if not mail and not openid:
+            raise ValidationError(_('Either OpenID or mail must be specified'))
+        return self.cleaned_data
diff --git a/ivatar/tools/templates/check.html b/ivatar/tools/templates/check.html
new file mode 100644
index 0000000..5541b96
--- /dev/null
+++ b/ivatar/tools/templates/check.html
@@ -0,0 +1,21 @@
+{% extends 'base.html' %}
+{% load i18n %}
+{% load bootstrap4 %}
+
+{% block title %}{% trans 'Check e-mail or openid' %}{% endblock title %}
+
+{% block content %}
+
+<h1>{% trans 'Check e-mail or openid' %}</h1>
+
+<div style="width:600px;">
+<form method="post" name="check">{% csrf_token %}
+  {% bootstrap_form form %}
+  {% buttons %}
+      <button type="submit" class="btn btn-primary">{% trans 'Check' %}</button>
+      <button type="cancel" class="btn btn-danger">{% trans 'Cancel' %}</button>
+  {% endbuttons %}
+</form>
+</div>
+
+{% endblock content %}
diff --git a/ivatar/tools/urls.py b/ivatar/tools/urls.py
new file mode 100644
index 0000000..9605ed4
--- /dev/null
+++ b/ivatar/tools/urls.py
@@ -0,0 +1,11 @@
+'''
+ivatar/tools URL configuration
+'''
+
+from django.conf.urls import url
+from . views import CheckView, CheckDomainView
+
+urlpatterns = [  # pylint: disable=invalid-name
+    url('check/', CheckView.as_view(), name='tools_check'),
+    url('check_domain/', CheckDomainView.as_view(), name='tools_check_domain'),
+]
diff --git a/ivatar/tools/views.py b/ivatar/tools/views.py
new file mode 100644
index 0000000..235fc0d
--- /dev/null
+++ b/ivatar/tools/views.py
@@ -0,0 +1,29 @@
+'''
+View classes for ivatar/tools/
+'''
+from django.views.generic.edit import FormView
+from django.urls import reverse_lazy as reverse
+from django.shortcuts import render
+
+from .forms import CheckDomainForm, CheckForm
+
+
+class CheckDomainView(FormView):
+    '''
+    View class for checking a domain
+    '''
+    template_name = 'check_domain.html'
+    form_class = CheckDomainForm
+
+
+class CheckView(FormView):
+    '''
+    View class for checking an e-mail or openid address
+    '''
+    template_name = 'check.html'
+    form_class = CheckForm
+    success_url = reverse('tools_check')
+
+    def form_valid(self, form):
+        super().form_valid(form)
+        return render(self.request, self.template_name, {'form': form})
diff --git a/ivatar/urls.py b/ivatar/urls.py
index e4be7b4..ed6deb8 100644
--- a/ivatar/urls.py
+++ b/ivatar/urls.py
@@ -13,6 +13,7 @@ urlpatterns = [  # pylint: disable=invalid-name
     path('admin/', admin.site.urls),
     url('openid/', include('django_openid_auth.urls')),
     url('accounts/', include('ivatar.ivataraccount.urls')),
+    url('tools/', include('ivatar.tools.urls')),
     url(
         r'avatar/(?P<digest>\w{64})',
         AvatarImageView.as_view(), name='avatar_view'),