diff --git a/figures/f1-protocols/f1-protocols.py b/figures/f1-protocols/f1-protocols.py
index 21c99ed3c..30d2e7e11 100755
--- a/figures/f1-protocols/f1-protocols.py
+++ b/figures/f1-protocols/f1-protocols.py
@@ -26,14 +26,16 @@
 #
 base = os.path.splitext(os.path.basename(__file__))[0]
 args = sys.argv[1:]
-if len(args) != 1:
-    print('Syntax:  ' + base + '.py <cell>')
+if len(args) not in (1, 2):
+    print('Syntax:  ' + base + '.py <cell> (pdf)')
     sys.exit(1)
 
 if args[0] == 'all':
     cell_list = range(1, 10)
 else:
     cell_list = [int(args[0])]
+pdf = (len(args) > 1 and args[1] == 'pdf')
+
 
 # Set font
 font = {'family': 'arial', 'size': 10}
@@ -118,6 +120,8 @@ def mm(*size):
     # Finalise
     fig.subplots_adjust(0.055, 0.055, 0.985, 0.98)
     fig.savefig(base + '-cell-' + str(cell) + '.png')
+    if pdf:
+        fig.savefig(base + '-cell-' + str(cell) + '.pdf')
 
 #plt.show()
 
diff --git a/figures/f6-cross-validation-3/f6-cross-validation-3.py b/figures/f6-cross-validation-3/f6-cross-validation-3.py
index c613e78d3..97f61eda5 100755
--- a/figures/f6-cross-validation-3/f6-cross-validation-3.py
+++ b/figures/f6-cross-validation-3/f6-cross-validation-3.py
@@ -29,14 +29,15 @@
 #
 base = os.path.splitext(os.path.basename(__file__))[0]
 args = sys.argv[1:]
-if len(args) != 1:
-    print('Syntax: ' + base + '.py <cell|all>')
+if len(args) not in (1, 2):
+    print('Syntax: ' + base + '.py <cell|all> (pdf)')
     sys.exit(1)
 
 if args[0] == 'all':
     cell_list = range(1, 10)
 else:
     cell_list = [int(args[0])]
+pdf = (len(args) > 1 and args[1] == 'pdf')
 
 
 # Set font
@@ -233,6 +234,8 @@ def mm(*size):
 
     # Finalise
     fig.savefig(base + '-cell-' + str(cell) + '.png')
+    if pdf:
+        fig.savefig(base + '-cell-' + str(cell) + '.pdf')
 
     plt.close(fig)
     del(fig, ax, grid1, grid2)