diff --git a/entries/kinds.py b/entries/kinds.py
index 1227b9d..5fb9528 100644
--- a/entries/kinds.py
+++ b/entries/kinds.py
@@ -14,7 +14,7 @@ class Entry:
         return self.index_page()
 
     def index_page(self, page=0):
-        kwargs = {'kind': self.plural}
+        kwargs = {'kind': self}
         if page > 1:
             kwargs['page'] = page
         return reverse('entries:index', kwargs=kwargs)
@@ -29,11 +29,11 @@ class Entry:
 
     @property
     def atom(self):
-        return reverse('entries:atom_by_kind', kwargs={'kind': self.plural})
+        return reverse('entries:atom_by_kind', kwargs={'kind': self})
 
     @property
     def rss(self):
-        return reverse('entries:rss_by_kind', kwargs={'kind': self.plural})
+        return reverse('entries:rss_by_kind', kwargs={'kind': self})
 
 
 Note = Entry(
@@ -80,3 +80,13 @@ all = (Note, Article, Photo)
 on_home = {k.id for k in all if k.on_home}
 from_id = {k.id: k for k in all}
 from_plural = {k.plural: k for k in all}
+
+
+class EntryKindConverter:
+    regex = '|'.join(k.plural for k in all)
+
+    def to_python(self, plural):
+        return from_plural[plural]
+
+    def to_url(self, k):
+        return k.plural
diff --git a/entries/models.py b/entries/models.py
index 43582fb..93034b2 100644
--- a/entries/models.py
+++ b/entries/models.py
@@ -43,7 +43,9 @@ class Cat(models.Model):
 class EntryManager(models.Manager):
     def get_queryset(self):
         qs = super(EntryManager, self).get_queryset()
-        return qs.select_related('author').prefetch_related('cats', 'syndications')
+        return (qs
+                .select_related('author')
+                .prefetch_related('cats', 'syndications'))
 
 
 class Entry(ModelMeta, TimeStampedModel):
@@ -99,7 +101,11 @@ class Entry(ModelMeta, TimeStampedModel):
     def title(self):
         if self.name:
             return self.name
-        return shorten(utils.to_plain(self.paragraphs[0]), width=100, placeholder='…')
+        return shorten(
+            utils.to_plain(self.paragraphs[0]),
+            width=100,
+            placeholder='…'
+        )
 
     @property
     def excerpt(self):
@@ -137,7 +143,7 @@ class Entry(ModelMeta, TimeStampedModel):
     @property
     def url(self):
         kind = kinds.from_id[self.kind]
-        args = [kind.plural, self.id]
+        args = [kind, self.id]
         if kind.slug:
             args.append(self.slug)
         return reverse('entries:entry', args=args)
@@ -145,7 +151,7 @@ class Entry(ModelMeta, TimeStampedModel):
     @property
     def amp_url(self):
         kind = kinds.from_id[self.kind]
-        args = [kind.plural, self.id]
+        args = [kind, self.id]
         if kind.slug:
             args.append(self.slug)
         return reverse('entries:entry_amp', args=args)
diff --git a/entries/pagination.py b/entries/pagination.py
index 04023ef..ab3763e 100644
--- a/entries/pagination.py
+++ b/entries/pagination.py
@@ -17,7 +17,7 @@ def paginate(queryset, reverse, page):
 
     # If the first page was requested, redirect to the clean version of the URL
     # with no page suffix.
-    if page == '1':
+    if page == 1:
         return redirect(Page(1).url)
 
     paginator = Paginator(queryset, 10)
diff --git a/entries/urls.py b/entries/urls.py
index 0d8daf1..19952f3 100644
--- a/entries/urls.py
+++ b/entries/urls.py
@@ -1,9 +1,10 @@
-from django.conf.urls import url
-from django.urls import reverse
+from django.urls import path, register_converter, reverse
 from . import kinds
 from .views import feeds, lists, perma
 from lemoncurry import breadcrumbs as crumbs
 
+register_converter(kinds.EntryKindConverter, 'kind')
+
 
 def to_pat(*args):
     return '^{0}$'.format(''.join(args))
@@ -22,14 +23,21 @@ slug_opt = '(?:' + slug + ')?'
 
 app_name = 'entries'
 urlpatterns = (
-    url('^atom$', feeds.AtomHomeEntries(), name='atom'),
-    url('^rss$', feeds.RssHomeEntries(), name='rss'),
-    url(to_pat('cats', slug, page), lists.by_cat, name='cat'),
-    url(to_pat(kind, page), lists.by_kind, name='index'),
-    url(to_pat(kind, '/atom'), feeds.AtomByKind(), name='atom_by_kind'),
-    url(to_pat(kind, '/rss'), feeds.RssByKind(), name='rss_by_kind'),
-    url(to_pat(kind, id, slug_opt, '/amp'), perma.entry_amp, name='entry_amp'),
-    url(to_pat(kind, id, slug_opt), perma.entry, name='entry'),
+    path('atom', feeds.AtomHomeEntries(), name='atom'),
+    path('rss', feeds.RssHomeEntries(), name='rss'),
+    path('cats/<slug:slug>', lists.by_cat, name='cat'),
+    path('cats/<slug:slug>/page/<int:page>', lists.by_cat, name='cat'),
+    path('<kind:kind>', lists.by_kind, name='index'),
+    path('<kind:kind>/page/<int:page>', lists.by_kind, name='index'),
+    path('<kind:kind>/atom', feeds.AtomByKind(), name='atom_by_kind'),
+    path('<kind:kind>/rss', feeds.RssByKind(), name='rss_by_kind'),
+
+    path('<kind:kind>/<int:id>/amp', perma.entry_amp, name='entry_amp'),
+    path('<kind:kind>/<int:id>/<slug:slug>/amp',
+         perma.entry_amp, name='entry_amp'),
+
+    path('<kind:kind>/<int:id>', perma.entry, name='entry'),
+    path('<kind:kind>/<int:id>/<slug:slug>', perma.entry, name='entry'),
 )
 
 
@@ -38,12 +46,16 @@ class IndexCrumb(crumbs.Crumb):
         super().__init__(prefix('index'), parent='home:index')
 
     @property
-    def label(self):
+    def kind(self):
         return self.match.kwargs['kind']
 
+    @property
+    def label(self):
+        return self.kind.plural
+
     @property
     def url(self):
-        return reverse(prefix('index'), kwargs={'kind': self.label})
+        return reverse(prefix('index'), kwargs={'kind': self.kind})
 
 
 crumbs.add(prefix('cat'), parent='home:index')
diff --git a/entries/views/lists.py b/entries/views/lists.py
index 90d8bbf..35afd08 100644
--- a/entries/views/lists.py
+++ b/entries/views/lists.py
@@ -1,14 +1,12 @@
 from annoying.decorators import render_to
 from django.shortcuts import get_object_or_404
 from django.urls import reverse
-from .. import kinds
 from ..models import Entry, Cat
 from ..pagination import paginate
 
 
 @render_to('entries/index.html')
-def by_kind(request, kind, page):
-    kind = kinds.from_plural[kind]
+def by_kind(request, kind, page=None):
     entries = Entry.objects.filter(kind=kind.id)
     entries = paginate(queryset=entries, reverse=kind.index_page, page=page)
     if hasattr(entries, 'content'):
@@ -23,7 +21,7 @@ def by_kind(request, kind, page):
 
 
 @render_to('entries/index.html')
-def by_cat(request, slug, page):
+def by_cat(request, slug, page=None):
     def url(page):
         kwargs = {'slug': slug}
         if page > 1:
diff --git a/home/urls.py b/home/urls.py
index 14b4ced..1f14b68 100644
--- a/home/urls.py
+++ b/home/urls.py
@@ -1,9 +1,10 @@
-from django.conf.urls import url
+from django.urls import path
 
 from . import views
 
 app_name = 'home'
 urlpatterns = [
-    url(r'^(?:page/(?P<page>\d+))?$', views.index, name='index'),
-    url(r'^robots.txt$', views.robots, name='robots.txt'),
+    path('', views.index, name='index'),
+    path('page/<int:page>', views.index, name='index'),
+    path('robots.txt', views.robots, name='robots.txt'),
 ]
diff --git a/home/views.py b/home/views.py
index 2572c10..bb414e4 100644
--- a/home/views.py
+++ b/home/views.py
@@ -12,7 +12,7 @@ breadcrumbs.add('home:index', 'home')
 
 
 @render_to('home/index.html')
-def index(request, page):
+def index(request, page=None):
     def url(page):
         kwargs = {'page': page} if page != 1 else {}
         return reverse('home:index', kwargs=kwargs)
diff --git a/lemoncurry/templatetags/lemoncurry_tags.py b/lemoncurry/templatetags/lemoncurry_tags.py
index b5cacd2..0968f43 100644
--- a/lemoncurry/templatetags/lemoncurry_tags.py
+++ b/lemoncurry/templatetags/lemoncurry_tags.py
@@ -45,7 +45,7 @@ def nav_left(request):
     items = (MenuItem(
         label=k.plural,
         icon=k.icon,
-        url=('entries:index', (k.plural,))
+        url=('entries:index', (k,))
     ) for k in kinds.all)
     return {'items': items, 'request': request}
 
@@ -55,11 +55,13 @@ def nav_right(request):
     if request.user.is_authenticated:
         items = (
             MenuItem(label='admin', icon='fas fa-cog', url='admin:index'),
-            MenuItem(label='log out', icon='fas fa-sign-out-alt', url='lemonauth:logout'),
+            MenuItem(label='log out', icon='fas fa-sign-out-alt',
+                     url='lemonauth:logout'),
         )
     else:
         items = (
-            MenuItem(label='log in', icon='fas fa-sign-in-alt', url='lemonauth:login'),
+            MenuItem(label='log in', icon='fas fa-sign-in-alt',
+                     url='lemonauth:login'),
         )
     return {'items': items, 'request': request}