diff --git a/src/Main.elm b/src/Main.elm
index 4e728a0..b0ade95 100644
--- a/src/Main.elm
+++ b/src/Main.elm
@@ -122,6 +122,7 @@ type Msg
     | PouchDBPutSuccessfully Value
     | TimerTriggeredSave
     | TimerTriggeredSyncAll
+    | TimerTriggeredCompaction
     | FocusedOnEditor
     | UserClickedNewNote
     | UserEditedNode String
@@ -157,6 +158,7 @@ type Effect
     | Put Value
     | FocusOnEditor
     | SyncOnce Sync
+    | Compact
 
 
 type UpdatedRevision
@@ -240,6 +242,9 @@ update msg model =
             , Batch (List.map SyncOnce model.settings.syncs)
             )
 
+        TimerTriggeredCompaction ->
+            ( model, Compact )
+
         FocusedOnEditor ->
             ( model, NoEffect )
 
@@ -632,6 +637,9 @@ perform model effect =
                 Nothing ->
                     Cmd.none
 
+        Compact ->
+            compact ()
+
 
 port put : Value -> Cmd msg
 
@@ -639,6 +647,9 @@ port put : Value -> Cmd msg
 port syncOnce : String -> Cmd msg
 
 
+port compact : () -> Cmd msg
+
+
 port putSuccessfully : (Value -> msg) -> Sub msg
 
 
@@ -647,7 +658,8 @@ subscriptions model =
     Sub.batch
         [ putSuccessfully PouchDBPutSuccessfully
         , Time.every 1000 (\_ -> TimerTriggeredSave)
-        , Time.every 10000 (\_ -> TimerTriggeredSyncAll)
+        , Time.every 60000 (\_ -> TimerTriggeredSyncAll)
+        , Time.every 120000 (\_ -> TimerTriggeredCompaction)
 
         -- Using a 1-second resolution is more than enough for most UI
         -- concerns. If it needs to be more precise, crank this down! But
diff --git a/src/index.js b/src/index.js
index d33cf0b..8d6f2de 100644
--- a/src/index.js
+++ b/src/index.js
@@ -62,6 +62,13 @@ var db = new PouchDB("notes");
       .catch((err) => console.error(err));
   });
 
+  // compacting
+  app.ports.compact.subscribe(() => {
+    db.compact()
+      .then(() => console.log("compaction success"))
+      .catch(err) => console.error(err));
+  })
+
   // syncing
   app.ports.syncOnce.subscribe((url) => {
     db.replicate.from(url).on("complete", (info) => {
diff --git a/tests/MainTest.elm b/tests/MainTest.elm
index f87be99..a8e827b 100644
--- a/tests/MainTest.elm
+++ b/tests/MainTest.elm
@@ -65,7 +65,10 @@ testPerform effect =
         FocusOnEditor ->
             SCmd.none
 
-        StartSyncing _ ->
+        SyncOnce _ ->
+            SCmd.none
+
+        Compact ->
             SCmd.none