diff --git a/modules/firefox.nix b/modules/firefox.nix
index 719799c..ad1b709 100644
--- a/modules/firefox.nix
+++ b/modules/firefox.nix
@@ -78,6 +78,9 @@
           "browser.download.useDownloadDir" = false;
           # Restore previous session.
           "browser.startup.page" = 3;
+
+          # Reduce spaces between UI elements. Larger website space.
+          "browser.uidensity" = 1;
         };
 
         # This is recommended since Firefox will replace the symlink for the search configuration on every launch.