diff --git a/src/main/backend/handlers.clj b/src/main/backend/handlers.clj
index c540416..16497c0 100644
--- a/src/main/backend/handlers.clj
+++ b/src/main/backend/handlers.clj
@@ -42,6 +42,20 @@
     (.empty link-card)
     (.append link-card (.attr (.parent link-card) "data-text"))))
 
+(defn build-catalog-item
+  [catalog-item]
+  (.tagName catalog-item "a")
+  (.attr catalog-item "href"
+              (str/join ["#" (.attr catalog-item "id")]))
+  (.attr catalog-item "id" "")
+  (str "<li>" (.toString catalog-item) "</li>"))
+
+
+(defn build-catalog
+  [docs]
+  (let [catalog (.select docs "h2, h3, h4, h5")]
+    (apply str (mapv build-catalog-item catalog))))
+
 
 (defn fetch-hu-post
   [request & {:keys [hugo]}]
@@ -56,7 +70,8 @@
     (render-linkcard docs)
     (let [content {:content (.toString docs)
                    :title   (.text title)
-                   :time    (first (str/split (.text post-time) #"・"))}]
+                   :time    (first (str/split (.text post-time) #"・"))
+                   :catalog (.toString (build-catalog docs))}]
       (if hugo
         content
         {:status    200
diff --git a/src/main/backend/hugo/site.clj b/src/main/backend/hugo/site.clj
index 368b395..3571606 100644
--- a/src/main/backend/hugo/site.clj
+++ b/src/main/backend/hugo/site.clj
@@ -19,7 +19,7 @@
                       [:div {:class "flex flex-row flex-wrap py-4"}
                        [:div {:class "w-full sm:w-1/3 md:w-1/4 px-2"}
                         [:div {:class "sticky top-0 p-4 bg-slate-300 rounded-xl w-full"}
-                         [:nav]]]
+                         [:div (:catalog content)]]]
                         [:div {:class "w-full sm:w-2/3 md:w-3/4 pt-1 px-2"}
                          [:h1 (:title content)]
                          [:time (:time content)]