diff --git a/archivist/apps/templates/sites/submission.html b/archivist/apps/templates/sites/submission.html
index 0a067b4..aacb885 100644
--- a/archivist/apps/templates/sites/submission.html
+++ b/archivist/apps/templates/sites/submission.html
@@ -48,8 +48,19 @@
                                             alt="{{ submission.content_object.title }}"/>
 
 
+                                {% elif submission.content_object.files.first.file_mime|is_pdf %}
+                                    <!-- Embed the full PDF.js viewer here -->
+                                    <iframe id="pdf-js-viewer" 
+                                        src="{% static 'libs/pdfjs-4.7.76-dist/web/viewer.html' %}?file={% url 'files:serve_content_file' 'submission' submission.content_object.files.first.file_hash %}" 
+                                        width="100%" height="100%" 
                                         class="border-0 m-auto flex-grow-1 p-0">
+                                    </iframe>
+
+                                    <!-- Scripts required for PDF.js -->
+                                    <script src="{% static 'libs/pdfjs-4.7.76-dist/build/pdf.js' %}"></script>
+                                    <script src="{% static 'libs/pdfjs-4.7.76-dist/web/viewer.js' %}"></script>
                                 {% endif %}
+
                             {% endif %}
                         {% else %}
                             <div class="m-auto center-block bg-body-secondary p-4 rounded-2 border border-3">