diff --git a/activities/models/post.py b/activities/models/post.py
index 78ec496..1b993a2 100644
--- a/activities/models/post.py
+++ b/activities/models/post.py
@@ -775,8 +775,8 @@ class Post(StatorModel):
             # These have no IDs, so we have to wipe them each time
             post.attachments.all().delete()
             for attachment in get_list(data, "attachment"):
-                if "toot:focalPoint" in attachment:
-                    focal_x, focal_y = attachment["toot:focalPoint"]["@list"]
+                if "focalPoint" in attachment:
+                    focal_x, focal_y = attachment["focalPoint"]["@list"]
                 else:
                     focal_x, focal_y = None, None
                 post.attachments.create(
@@ -785,7 +785,7 @@ class Post(StatorModel):
                     name=attachment.get("name"),
                     width=attachment.get("width"),
                     height=attachment.get("height"),
-                    blurhash=attachment.get("toot:blurhash"),
+                    blurhash=attachment.get("blurhash"),
                     focal_x=focal_x,
                     focal_y=focal_y,
                 )
diff --git a/activities/views/debug.py b/activities/views/debug.py
new file mode 100644
index 0000000..8e4b823
--- /dev/null
+++ b/activities/views/debug.py
@@ -0,0 +1,45 @@
+import pprint
+
+import httpx
+from asgiref.sync import async_to_sync
+from django import forms
+from django.utils.decorators import method_decorator
+from django.views.generic import FormView
+
+from core.ld import canonicalise
+from users.decorators import admin_required
+from users.models import SystemActor
+
+
+@method_decorator(admin_required, name="dispatch")
+class JsonViewer(FormView):
+
+    template_name = "activities/debug_json.html"
+
+    class form_class(forms.Form):
+        uri = forms.CharField(
+            help_text="The URI to fetch and show",
+            widget=forms.TextInput(attrs={"type": "search", "autofocus": "autofocus"}),
+        )
+
+    def form_valid(self, form):
+        try:
+            response = async_to_sync(SystemActor().signed_request)(
+                method="get",
+                uri=form.cleaned_data["uri"],
+            )
+        except httpx.RequestError:
+            result = "Request Error"
+        else:
+            if response.status_code >= 400:
+                result = f"Error response: {response.status_code}\n{response.content}"
+            else:
+                document = canonicalise(response.json(), include_security=True)
+                result = pprint.pformat(document)
+        # Render results
+        context = self.get_context_data(form=form)
+        context["result"] = result
+        return self.render_to_response(context)
+
+
+# https://pixelfed.social/p/wakest/502370273028530995
diff --git a/takahe/urls.py b/takahe/urls.py
index d3572a9..9fad882 100644
--- a/takahe/urls.py
+++ b/takahe/urls.py
@@ -2,7 +2,7 @@ from django.conf import settings as djsettings
 from django.contrib import admin as djadmin
 from django.urls import path, re_path
 
-from activities.views import compose, explore, follows, posts, search, timelines
+from activities.views import compose, debug, explore, follows, posts, search, timelines
 from api.views import api_router, oauth
 from core import views as core
 from mediaproxy import views as mediaproxy
@@ -17,6 +17,7 @@ urlpatterns = [
     path("local/", timelines.Local.as_view(), name="local"),
     path("federated/", timelines.Federated.as_view(), name="federated"),
     path("search/", search.Search.as_view(), name="search"),
+    path("debug/json/", debug.JsonViewer.as_view(), name="debug_json"),
     path("tags/<hashtag>/", timelines.Tag.as_view(), name="tag"),
     path("explore/", explore.Explore.as_view(), name="explore"),
     path("explore/tags/", explore.ExploreTag.as_view(), name="explore-tag"),
diff --git a/templates/activities/debug_json.html b/templates/activities/debug_json.html
new file mode 100644
index 0000000..d5c6e07
--- /dev/null
+++ b/templates/activities/debug_json.html
@@ -0,0 +1,20 @@
+{% extends "base.html" %}
+
+{% block title %}Debug JSON{% endblock %}
+
+{% block body_class %}no-sidebar{% endblock %}
+
+{% block content %}
+    <form action="." method="POST">
+        {% csrf_token %}
+        <fieldset>
+            {% include "forms/_field.html" with field=form.uri %}
+        </fieldset>
+        <div class="buttons">
+            <button>Debug</button>
+        </div>
+    </form>
+    {% if result %}
+        <pre>{{ result }}</pre>
+    {% endif %}
+{% endblock %}