diff --git a/src/pyj/read_book/globals.pyj b/src/pyj/read_book/globals.pyj
index d0f66de8b3..b058c3dfa9 100644
--- a/src/pyj/read_book/globals.pyj
+++ b/src/pyj/read_book/globals.pyj
@@ -81,4 +81,5 @@ ui_operations = {
     'goto_bookpos': None,
     'delete_book': None,
     'focus_iframe': None,
+    'toggle_toc': None,
 }
diff --git a/src/pyj/read_book/shortcuts.pyj b/src/pyj/read_book/shortcuts.pyj
index 19b9efb48f..0bee228ad5 100644
--- a/src/pyj/read_book/shortcuts.pyj
+++ b/src/pyj/read_book/shortcuts.pyj
@@ -175,6 +175,17 @@ SHORTCUTS = {
         _('Find previous'),
     ),
 
+    'increase_font_size': desc(
+        v"['Ctrl+=', 'Ctrl++', 'Ctrl+Shift++', 'Ctrl+Shift+=']",
+        'ui',
+        _('Increase font size'),
+    ),
+
+    'decrease_font_size': desc(
+        v"['Ctrl+-', 'Ctrl+_', 'Ctrl+Shift+-', 'Ctrl+Shift+_']",
+        'ui',
+        _('Decrease font size'),
+    ),
 }
 
 
diff --git a/src/pyj/read_book/view.pyj b/src/pyj/read_book/view.pyj
index b5c6af3499..a8ad0090c6 100644
--- a/src/pyj/read_book/view.pyj
+++ b/src/pyj/read_book/view.pyj
@@ -237,6 +237,10 @@ class View:
             self.search_overlay.find_next()
         elif data.name is 'previous_match':
             self.search_overlay.find_previous()
+        elif data.name is 'increase_font_size':
+            self.bump_font_size({'increase': True})
+        elif data.name is 'decrease_font_size':
+            self.bump_font_size({'increase': False})
 
     def on_selection_change(self, data):
         self.currently_showing.selected_text = data.text