diff --git a/apps/iiif/annotations/tests.py b/apps/iiif/annotations/tests.py
index 0b7ebfe6e..4e06fad0e 100644
--- a/apps/iiif/annotations/tests.py
+++ b/apps/iiif/annotations/tests.py
@@ -1,19 +1,11 @@
 from django.test import TestCase
 from django.conf import settings
-from django.core.checks import Warning
+import warnings
 from .views import AnnotationListCreate
 from rest_framework.test import APIRequestFactory
 from rest_framework.test import APIClient
 from rest_framework.test import APITestCase
-import requests
 import json
-from os import killpg, path, setsid
-import signal
-import subprocess
-import logging
-
-logger = logging.getLogger(__name__)
-
 
 class AnnotationTests(APITestCase):
     factory = APIRequestFactory()
@@ -71,24 +63,4 @@ def test_get_annotations_for_page(self):
             'readux/annotations/MSS_Vat.lat.3225/p0005', format='json')
         response = view(request)
         response.render()
-        assert response.status_code == 200
-
-    def test_validate_iiif(self):
-        iiif_validator = path.abspath(path.join(
-            str(settings.ROOT_DIR.path()),
-            'presentation-validator',
-            'iiif-presentation-validator.py')
-        )
-        if (not path.isfile(iiif_validator)):
-            command = 'python presentation-validator/iiif-presentation-validator.py'
-            process = subprocess.Popen(
-                command, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
-                shell=True, preexec_fn=setsid
-            )
-            killpg(process.pid, signal.SIGTERM)
-        else:
-            return Warning(
-                'IIIF Presentation Validator not found.',
-                hint='Check README',
-                id='R001'
-            )        
+        assert response.status_code == 200        
diff --git a/apps/iiif/canvases/models.py b/apps/iiif/canvases/models.py
index 1e580c211..55c4029c7 100644
--- a/apps/iiif/canvases/models.py
+++ b/apps/iiif/canvases/models.py
@@ -56,9 +56,8 @@ def social_media(self):
         return "%s/%s/full/600,/0/default.jpg" % (self.IIIF_IMAGE_SERVER_BASE, self.pid)
 
     @property
-    def startingpage(self):
-        if self.is_starting_page is True:
-            return "%s/iiif/%s/" % (settings.HOSTNAME, self.manifest.pid)
+    def uri(self):
+        return "%s/iiif/%s/" % (settings.HOSTNAME, self.manifest.pid)
 
     @property
     def thumbnail_crop_landscape(self):
diff --git a/apps/iiif/canvases/views.py b/apps/iiif/canvases/views.py
index a6ae8f7d7..299166da4 100644
--- a/apps/iiif/canvases/views.py
+++ b/apps/iiif/canvases/views.py
@@ -36,6 +36,7 @@ def post(self, request, *args, **kwargs):
         annotation.save()
         return JsonResponse(oa_annotation, safe=False)
         
+# TODO It should be okay to remove this.
 class StartingCanvas(View):
     def get_queryset(self):
         return Canvas.objects.filter(is_starting_page=True)
diff --git a/apps/iiif/manifests/models.py b/apps/iiif/manifests/models.py
index 2bb6816df..8ebbeb64f 100644
--- a/apps/iiif/manifests/models.py
+++ b/apps/iiif/manifests/models.py
@@ -38,6 +38,11 @@ def publisher_bib(self):
     @property
     def baseurl(self):
         return "%s/iiif/v2/%s" % (settings.HOSTNAME, self.pid)
+
+    @property
+    def start_canvas(self):
+        first = self.canvas_set.all().exclude(is_starting_page=False).first()
+        return first.identifier if first else self.canvas_set.all().first().identifier
     
  #   def autocomplete_label(self):
  #       return self.label
diff --git a/apps/iiif/manifests/tests.py b/apps/iiif/manifests/tests.py
index 7ce503c2d..0d87e1a72 100644
--- a/apps/iiif/manifests/tests.py
+++ b/apps/iiif/manifests/tests.py
@@ -1,3 +1,27 @@
 from django.test import TestCase
+from rest_framework.test import APIRequestFactory
+from rest_framework.test import APIClient
+from rest_framework.test import APITestCase
+from .views import ManifestDetail
+from .models import Manifest
+from iiif_prezi.loader import ManifestReader
+import json
+import logging
 
-# Create your tests here.
+logger = logging.getLogger(__name__)
+
+class AnnotationTests(APITestCase):
+    factory = APIRequestFactory()
+    fixtures = ['kollections.json', 'manifests.json', 'canvases.json', 'annotations.json']
+
+    def test_validate_iiif(self):
+        view = ManifestDetail.as_view()
+        manifest = Manifest.objects.all().first()
+        manifest_uri = '/'.join(['/iiif', 'v2', manifest.pid, 'manifest']) 
+        response = self.client.get(manifest_uri)
+        reader = ManifestReader(response.content, version='2.1')
+        try:
+            mf = reader.read()
+            assert mf.toJSON()
+        except Exception as error:
+            raise Exception(error)
diff --git a/apps/iiif/serializers/annotation.py b/apps/iiif/serializers/annotation.py
index 2fd196a1a..e85786206 100644
--- a/apps/iiif/serializers/annotation.py
+++ b/apps/iiif/serializers/annotation.py
@@ -30,7 +30,7 @@ def start_object(self, obj):
     def get_dump_object(self, obj):
         if ((self.version == 'v2') or (self.version is None)):
             data = {
-                "@context": "https://iiif.io/api/presentation/2/context.json",
+                "@context": "http://iiif.io/api/presentation/2/context.json",
                 "@id": str(obj.pk),
                 "@type": "oa:Annotation",
                 "motivation": obj.motivation,
diff --git a/apps/iiif/serializers/annotation_list.py b/apps/iiif/serializers/annotation_list.py
index 14fd86213..7f63a0aa6 100644
--- a/apps/iiif/serializers/annotation_list.py
+++ b/apps/iiif/serializers/annotation_list.py
@@ -32,7 +32,7 @@ def start_object(self, obj):
     def get_dump_object(self, obj):
         if ((self.version == 'v2') or (self.version is None)):
             data = {
-                "@context": "https://iiif.io/api/presentation/2/context.json",
+                "@context": "http://iiif.io/api/presentation/2/context.json",
                 "@id": "%s/iiif/%s/list/%s" % (settings.HOSTNAME, obj.manifest.pid, obj.pid),
                 "@type": "sc:AnnotationList",
                 "resources": json.loads(serialize('annotation', obj.annotation_set.all().distinct('order'), islist=True))
diff --git a/apps/iiif/serializers/canvas.py b/apps/iiif/serializers/canvas.py
index bea9cfb63..8a05d7b8a 100644
--- a/apps/iiif/serializers/canvas.py
+++ b/apps/iiif/serializers/canvas.py
@@ -5,7 +5,7 @@
 V2
 {
   // Metadata about this canvas
-  "@context": "https://iiif.io/api/presentation/2/context.json",
+  "@context": "http://iiif.io/api/presentation/2/context.json",
   "@id": "https://example.org/iiif/book1/canvas/p1",
   "@type": "sc:Canvas",
   "label": "p. 1",
@@ -80,9 +80,10 @@ def start_object(self, obj):
         super().start_object(obj)
 
     def get_dump_object(self, obj):
+        obj.label = str(obj.position)
         if ((self.version == 'v2') or (self.version is None)):
             data = {
-                "@context": "https://iiif.io/api/presentation/2/context.json",
+                "@context": "http://iiif.io/api/presentation/2/context.json",
                 "@id": obj.identifier,
                 "@type": "sc:Canvas",
                 "label": obj.label,
@@ -90,7 +91,7 @@ def get_dump_object(self, obj):
                 "width": obj.width,
                 "images": [
                   {
-                    "@context": "https://iiif.io/api/presentation/2/context.json",
+                    "@context": "http://iiif.io/api/presentation/2/context.json",
                     "@id": "%s" % (obj.anno_id),
                     "@type": "oa:Annotation",
                     "motivation": "sc:painting",
diff --git a/apps/iiif/serializers/kollection.py b/apps/iiif/serializers/kollection.py
index b25aaac3c..10ca53c06 100644
--- a/apps/iiif/serializers/kollection.py
+++ b/apps/iiif/serializers/kollection.py
@@ -31,7 +31,7 @@ def start_object(self, obj):
     def get_dump_object(self, obj):
         if ((self.version == 'v2') or (self.version is None)):
             data = {
-              "@context": "https://iiif.io/api/presentation/2/context.json",
+              "@context": "http://iiif.io/api/presentation/2/context.json",
               "@id": "https://readux.ecds.emory.edu/iiif/v2/%s/collection" % (obj.pid),
               "@type": "sc:Collection",
               "label": obj.label,
diff --git a/apps/iiif/serializers/manifest.py b/apps/iiif/serializers/manifest.py
index 05dedcc46..c75a1af3f 100644
--- a/apps/iiif/serializers/manifest.py
+++ b/apps/iiif/serializers/manifest.py
@@ -7,7 +7,7 @@
 V2
 {
   // Metadata about this canvas
-  "@context": "https://iiif.io/api/presentation/2/context.json",
+  "@context": "http://iiif.io/api/presentation/2/context.json",
   "@id": 'https://example.org/iiif/%s/canvas/p1' % (obj.pid),
   "@type": "sc:Canvas",
   "label": "p. 1",
@@ -77,7 +77,7 @@ def start_object(self, obj):
     def get_dump_object(self, obj):
         if ((self.version == 'v2') or (self.version is None)):
             data = {
-              "@context": "https://iiif.io/api/presentation/2/context.json",
+              "@context": "http://iiif.io/api/presentation/2/context.json",
               "@id": "%s/manifest" % (obj.baseurl),
               "@type": "sc:Manifest",
               "label": obj.label,
@@ -104,7 +104,7 @@ def get_dump_object(self, obj):
                   "label": "Current Page Order",
                   "viewingDirection": obj.viewingDirection,
                   "viewingHint": "paged",
-                  "startCanvas": json.loads(serialize('startingcanvas', obj.canvas_set.all().exclude(is_starting_page=False), islist=True)),
+                  "startCanvas": obj.start_canvas,
                   "canvases": json.loads(serialize('canvas', obj.canvas_set.all(), islist=True))
                 }
               ]
diff --git a/apps/iiif/serializers/startingcanvas.py b/apps/iiif/serializers/startingcanvas.py
index 78cade374..db0c644fa 100644
--- a/apps/iiif/serializers/startingcanvas.py
+++ b/apps/iiif/serializers/startingcanvas.py
@@ -5,7 +5,7 @@
 V2
 {
   // Metadata about this canvas
-  "@context": "https://iiif.io/api/presentation/2/context.json",
+  "@context": "http://iiif.io/api/presentation/2/context.json",
   "@id": "https://example.org/iiif/book1/canvas/p1",
   "@type": "sc:Canvas",
   "label": "p. 1",
diff --git a/requirements/local.txt b/requirements/local.txt
index 2fb8f0c41..2cf15f353 100644
--- a/requirements/local.txt
+++ b/requirements/local.txt
@@ -11,6 +11,7 @@ mypy==0.641  # https://github.com/python/mypy
 pytest==3.9.3  # https://github.com/pytest-dev/pytest
 pytest-sugar==0.9.1  # https://github.com/Frozenball/pytest-sugar
 requests
+iiif-prezi # https://github.com/iiif-prezi/iiif-prezi
 
 # Code quality
 # ------------------------------------------------------------------------------