diff --git a/activities/views/debug.py b/activities/views/debug.py
index b77a96c..d93190e 100644
--- a/activities/views/debug.py
+++ b/activities/views/debug.py
@@ -1,4 +1,4 @@
-import pprint
+import json
 
 import httpx
 from asgiref.sync import async_to_sync
@@ -23,28 +23,42 @@ class JsonViewer(FormView):
         )
 
     def form_valid(self, form):
-        raw_result = ""
         uri = form.cleaned_data["uri"]
         if "://" not in uri:
             uri = "https://" + uri
+
+        # Render results
+        context = self.get_context_data(form=form)
+
         try:
             response = async_to_sync(SystemActor().signed_request)(
                 method="get",
                 uri=uri,
             )
-        except httpx.RequestError:
-            result = "Request Error"
+        except httpx.RequestError as ex:
+            result = f"Request Error: {str(ex)}"
         else:
-            raw_result = response.text
+            context.update(
+                {
+                    "status_code": response.status_code,
+                    "content_type": response.headers["content-type"],
+                    "num_bytes_downloaded": response.num_bytes_downloaded,
+                    "charset_encoding": response.charset_encoding,
+                    "raw_result": response.text,
+                }
+            )
+
             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)
+                try:
+                    document = canonicalise(response.json(), include_security=True)
+                except json.JSONDecodeError as ex:
+                    result = str(ex)
+                else:
+                    result = json.dumps(document, indent=4, sort_keys=True)
+                    # result = pprint.pformat(document)
         context["result"] = result
-        context["raw_result"] = raw_result
         return self.render_to_response(context)
 
 
diff --git a/static/css/style.css b/static/css/style.css
index 0de3680..23379b3 100644
--- a/static/css/style.css
+++ b/static/css/style.css
@@ -1516,3 +1516,45 @@ form .post {
     position: static;
     margin: auto;
 }
+
+
+/* Debug */
+.debug {
+    width: 100%;
+}
+.debug h2 {
+    text-align: center;
+    padding-bottom: 5px;
+}
+.debug-section {
+    text-align: center;
+}
+.debug-section .field.payload,
+#canonical_response,
+#raw_response {
+    margin-bottom: 10px;
+}
+#canonical_response, #raw_response {
+    background-color: var(--color-bg-box);
+    overflow: scroll;
+    text-align: left;
+}
+.debug-section .field .name {
+    display: inline-block;
+    min-width: 49%;
+    text-align: right;
+    padding-right: 10px;
+}
+.debug-section .field .value {
+    display: inline-block;
+    min-width: 49%;
+    text-align: left;
+}
+
+.debug-section {
+    margin-bottom: 20px;
+}
+
+.debug-section .hidden {
+    display: none;
+}
diff --git a/templates/activities/debug_json.html b/templates/activities/debug_json.html
index 5cf3e5e..0811c16 100644
--- a/templates/activities/debug_json.html
+++ b/templates/activities/debug_json.html
@@ -16,10 +16,76 @@
     </form>
     {% if result %}
 
-        <p>Canonacalized Response: (view source for raw)</p>
-        <div id="raw-json-result" style="display: none;">
-{{ raw_result|escape }}
+    <div class="debug">
+        <h2>Summary</h2>
+        <div class="debug-section">
+            <div class="field">
+                <span class="name">Status Code:</span>
+                <span class="value">{{ status_code }}</span>
+            </div>
+
+            <div class="field">
+                <span class="name">Content-Type:</span>
+                <span class="value">{{ content_type }}</span>
+            </div>
+
+            <div class="field">
+                <span class="name">Bytes Downloaded:</span>
+                <span class="value">{{ num_bytes_downloaded }}</span>
+            </div>
         </div>
-        <pre>{{ result }}</pre>
+
+        <h2>Payload</h2>
+
+        <div class="debug-section">
+            <div class="field payload">
+                <span class="name">Raw Response:
+                    <a title="Copy Content"
+                    class="copy"
+                    _="on click
+                         writeText(#raw_response.innerText) into the navigator's clipboard
+                         then add .copied
+                         wait 2s
+                         then remove .copied">
+                        <i class="fa-solid fa-copy"></i>
+                    </a>
+                </span>
+                <span class="value">
+                    <a _="on click
+                            toggle .hidden on #raw_response
+                            then
+                                if my.innerText is 'Hide' set my.innerText to 'Show'
+                                else set my.innerText to 'Hide'
+                        ">Show</a></span>
+            </div>
+            <div id="raw_response" class="hidden">
+
+{{ raw_result|escape }}
+            </div>
+
+            <div class="field payload">
+                <span class="name">Canonical:
+                    <a title="Copy Content"
+                    class="copy"
+                    _="on click
+                         writeText(#canonical_response.innerText) into the navigator's clipboard
+                         then add .copied
+                         wait 2s
+                         then remove .copied">
+                    <i class="fa-solid fa-copy"></i>
+                    </a>
+                </span>
+                <span class="value">
+                    <a _="on click
+                            toggle .hidden on #canonical_response
+                            then
+                                if my.innerText is 'Hide' set my.innerText to 'Show'
+                                else set my.innerText to 'Hide'
+                        ">Show</a></span>
+            </div>
+            <pre id="canonical_response" class="hidden">{{ result }}</pre>
+        </div>
+    </div>
     {% endif %}
+
 {% endblock %}
diff --git a/users/models/identity.py b/users/models/identity.py
index c7db91c..8249781 100644
--- a/users/models/identity.py
+++ b/users/models/identity.py
@@ -642,6 +642,10 @@ class Identity(StatorModel):
             )
         except httpx.RequestError:
             return False
+        content_type = response.headers.get("content-type")
+        if content_type and "html" in content_type:
+            # Some servers don't properly handle "application/activity+json"
+            return False
         if response.status_code == 410:
             # Their account got deleted, so let's do the same.
             if self.pk: