diff --git a/terminatorlib/config.py b/terminatorlib/config.py
index d5a7b2f1..35d05e2b 100644
--- a/terminatorlib/config.py
+++ b/terminatorlib/config.py
@@ -130,6 +130,9 @@ DEFAULTS = {
             'zoom_in'          : '<Control>plus',
             'zoom_out'         : '<Control>minus',
             'zoom_normal'      : '<Control>0',
+			'zoom_in_all'	   : '',
+			'zoom_out_all'	   : '',
+			'zoom_normal_all'  : '',
             'new_tab'          : '<Shift><Control>t',
             'cycle_next'       : '<Control>Tab',
             'cycle_prev'       : '<Shift><Control>Tab',
diff --git a/terminatorlib/prefseditor.py b/terminatorlib/prefseditor.py
index c1872e84..5d43953f 100755
--- a/terminatorlib/prefseditor.py
+++ b/terminatorlib/prefseditor.py
@@ -105,6 +105,9 @@ class PrefsEditor:
     keybindingnames = { 'zoom_in'          : _('Increase font size'),
                         'zoom_out'         : _('Decrease font size'),
                         'zoom_normal'      : _('Restore original font size'),
+						'zoom_in_all'	   : _('Increase font size on all terminals'),
+						'zoom_out_all'	   : _('Decrease font size on all terminals'),
+						'zoom_normal_all'  : _('Restore original font size on all terminals'),
                         'new_tab'          : _('Create a new tab'),
                         'cycle_next'       : _('Focus the next terminal'),
                         'cycle_prev'       : _('Focus the previous terminal'),
diff --git a/terminatorlib/terminal.py b/terminatorlib/terminal.py
index b816427d..43b3155f 100644
--- a/terminatorlib/terminal.py
+++ b/terminatorlib/terminal.py
@@ -1783,6 +1783,15 @@ class Terminal(Gtk.VBox):
     # a function of Terminator. It would be cleaner if TerminatorTerm
     # has absolutely no reference to Terminator.
     # N (next) - P (previous) - O (horizontal) - E (vertical) - W (close)
+    def key_zoom_in_all(self):
+        self.terminator.zoom_in_all()
+
+    def key_zoom_out_all(self):
+        self.terminator.zoom_out_all()
+        
+    def key_zoom_normal_all(self):
+        self.terminator.zoom_orig_all()
+
     def key_cycle_next(self):
         self.key_go_next()
 
diff --git a/terminatorlib/terminator.py b/terminatorlib/terminator.py
index 9657da5c..6cbf4d68 100644
--- a/terminatorlib/terminator.py
+++ b/terminatorlib/terminator.py
@@ -633,4 +633,15 @@ class Terminator(Borg):
 
         return(layout)
 
+    def zoom_in_all(self):
+        for term in self.terminals:
+            term.zoom_in()
+    
+    def zoom_out_all(self):
+        for term in self.terminals:
+            term.zoom_out()
+    
+    def zoom_orig_all(self):
+        for term in self.terminals:
+            term.zoom_orig()
 # vim: set expandtab ts=4 sw=4: