diff --git a/render.go b/render.go
index 204ed2a..546c4aa 100644
--- a/render.go
+++ b/render.go
@@ -307,6 +307,9 @@ func render(w http.ResponseWriter, r *http.Request) {
 		content = renderInlineMentions(basicFormatting(html.EscapeString(content)))
 	}
 
+	// pretty JSON
+	eventJSON, _ := json.MarshalIndent(event, "", "  ")
+
 	params := map[string]any{
 		"createdAt":        createdAt,
 		"modifiedAt":       modifiedAt,
@@ -323,6 +326,7 @@ func render(w http.ResponseWriter, r *http.Request) {
 		"subject":          subject,
 		"description":      description,
 		"event":            event,
+		"eventJSON":        string(eventJSON),
 		"content":          content,
 		"titleizedContent": titleize(content),
 		"textImageURL":     textImageURL,
diff --git a/templates/details.html b/templates/details.html
index 95292aa..9bc3bac 100644
--- a/templates/details.html
+++ b/templates/details.html
@@ -18,5 +18,5 @@
 
 <div class="field {{if not ( or (eq .type "other") (eq .type "address"))}}advanced{{end}} boxed">
   <div class="label">Event JSON</div>
-  <div class="json">{{.event}}</div>
+  <div class="json">{{.eventJSON}}</div>
 </div>