diff --git a/apps/client/src/widgets/note_tree.css b/apps/client/src/widgets/note_tree.css
new file mode 100644
index 000000000..31e2b0142
--- /dev/null
+++ b/apps/client/src/widgets/note_tree.css
@@ -0,0 +1,10 @@
+.note-indicator-icon.subtree-hidden-badge {
+    font-family: inherit !important;
+    margin-inline-start: 0.5em;
+    background: var(--left-pane-item-action-button-background);
+    color: var(--left-pane-item-action-button-color);
+    padding: 0.25em;
+    border-radius: 0.5em;
+    font-size: 0.7rem;
+    font-weight: normal;
+}
diff --git a/apps/client/src/widgets/note_tree.ts b/apps/client/src/widgets/note_tree.ts
index 24e02286c..45c0a98c6 100644
--- a/apps/client/src/widgets/note_tree.ts
+++ b/apps/client/src/widgets/note_tree.ts
@@ -3,13 +3,13 @@ import "jquery.fancytree/dist/modules/jquery.fancytree.dnd5.js";
 import "jquery.fancytree/dist/modules/jquery.fancytree.clones.js";
 import "jquery.fancytree/dist/modules/jquery.fancytree.filter.js";
 import "../stylesheets/tree.css";
+import "./note_tree.css";
 
 import appContext, { type CommandListenerData, type EventData } from "../components/app_context.js";
 import type { SetNoteOpts } from "../components/note_context.js";
 import type { TouchBarItem } from "../components/touch_bar.js";
 import type FBranch from "../entities/fbranch.js";
 import type FNote from "../entities/fnote.js";
-import type { NoteType } from "../entities/fnote.js";
 import contextMenu from "../menus/context_menu.js";
 import type { TreeCommandNames } from "../menus/tree_context_menu.js";
 import branchService from "../services/branches.js";
@@ -1887,5 +1887,11 @@ function buildEnhanceTitle() {
             $sharedIndicator.attr("title", tooltipText);
             $span.find(".fancytree-title").append($sharedIndicator);
         }
+
+        // Add a badge with the number of items if it hides children.
+        if (note.hasLabel("subtreeHidden")) {
+            const $badge = $(`<span class="note-indicator-icon subtree-hidden-badge">${note.getChildNoteIds().length}</span>`);
+            $span.find(".fancytree-title").append($badge);
+        }
     };
 }