diff --git a/lib/ketbin_web/controllers/page_controller.ex b/lib/ketbin_web/controllers/page_controller.ex
index 2b0544e..ed1b242 100644
--- a/lib/ketbin_web/controllers/page_controller.ex
+++ b/lib/ketbin_web/controllers/page_controller.ex
@@ -13,21 +13,24 @@ defmodule KetbinWeb.PageController do
   end
 
   def show(%{assigns: %{show_edit: show_edit}} = conn, %{"id" => id}) do
+    [head | tail] = String.split(id, ".")
+
     # fetch paste from db
-    paste = Pastes.get_paste!(id)
+    paste = Pastes.get_paste!(head)
 
     # paste is a url, redirect
     # regular paste, show content
     if paste.is_url do
       redirect(conn, external: paste.content)
     else
-      render(conn, "show.html", paste: paste, show_edit: show_edit)
+      render(conn, "show.html", paste: paste, show_edit: show_edit, extension: List.first(tail) || "")
     end
   end
 
   def showlink(%{assigns: %{show_edit: show_edit}} = conn, %{"id" => id}) do
-    paste = Pastes.get_paste!(id)
-    render(conn, "show.html", paste: paste, show_edit: show_edit)
+    [head | tail] = String.split(id, ".")
+    paste = Pastes.get_paste!(head)
+    render(conn, "show.html", paste: paste, show_edit: show_edit, extension: List.first(tail) || "")
   end
 
   def raw(conn, %{"id" => id}) do
diff --git a/lib/ketbin_web/controllers/user_auth.ex b/lib/ketbin_web/controllers/user_auth.ex
index b103bc1..8a37115 100644
--- a/lib/ketbin_web/controllers/user_auth.ex
+++ b/lib/ketbin_web/controllers/user_auth.ex
@@ -97,12 +97,14 @@ defmodule KetbinWeb.UserAuth do
   end
 
   def owns_paste(%{params: %{"id" => id}, assigns: %{current_user: user}} = conn, _params) do
-    paste = Pastes.get_paste!(id)
+    [head|_tail] = String.split(id, ".")
+    paste = Pastes.get_paste!(head)
     assign(conn, :show_edit, (user && user.id == paste.belongs_to) || false)
   end
 
   def ensure_owns_paste(%{params: %{"id" => id}, assigns: %{current_user: user}} = conn, _params) do
-    paste = Pastes.get_paste!(id)
+    [head|_tail] = String.split(id, ".")
+    paste = Pastes.get_paste!(head)
     allow_edit = (user && user.id == paste.belongs_to) || false
     unless allow_edit do
       conn
diff --git a/lib/ketbin_web/templates/page/show.html.eex b/lib/ketbin_web/templates/page/show.html.eex
index 13e64de..5f0c5e6 100644
--- a/lib/ketbin_web/templates/page/show.html.eex
+++ b/lib/ketbin_web/templates/page/show.html.eex
@@ -8,5 +8,5 @@
 		</a>
 		<% end %>
 	</div>
-	<code class="break-word px-6 py-4 h-full w-full nomarkdown overflow-y-auto"><%= raw Ketbin.Utils.Syntax.highlight_text(@paste.content, "rs") %></code>
+	<code class="break-word px-6 py-4 h-full w-full nomarkdown overflow-y-auto"><%= raw Ketbin.Utils.Syntax.highlight_text(@paste.content, @extension) %></code>
 </div>