diff --git a/py-packages/markslider/markslider/markslider.py b/py-packages/markslider/markslider/markslider.py
index 9b25211..2dfd5a3 100755
--- a/py-packages/markslider/markslider/markslider.py
+++ b/py-packages/markslider/markslider/markslider.py
@@ -19,8 +19,8 @@
 
 """Markslider: a slideshow engine based on markdown."""
 
-__author__ = "Ville Rantanen <ville.q.rantanen@gmail.com>"
-__version__ = "1.3.2"
+__author__ = "q <q@moonq.org>"
+__version__ = "1.3.3"
 
 import sys, os, argparse, re, datetime
 from argparse import ArgumentParser
@@ -558,6 +558,20 @@ Keyboard shortcuts:
         default=True,
         help="Disable line wrapping. Cuts long lines.",
     )
+    content.add_argument(
+        "--width",
+        action="store", type=int,
+        dest="width",
+        default=None,
+        help="Force width of page (for --center)",
+    )
+    content.add_argument(
+        "--height",
+        action="store", type=int,
+        dest="height",
+        default=None,
+        help="Force height of page (for --center)",
+    )
 
     parser.add_argument("files", type=str, nargs="+", help="File(s) to show")
     opts = parser.parse_args()
@@ -577,10 +591,17 @@ def page_print(reader, opts, offset):
     # clear page
     bc.clear()
     if opts.center:  # Placeholder for 80x25 center alignment
-        align_width = reader.get_max_width()
+        if opts.width:
+            align_width = opts.width
+        else:
+            align_width = reader.get_max_width()
         align_x_offset = int(scrsize[1] / 2 - align_width / 2)
         align_pad = " " * align_x_offset
-        align_y_offset = int(scrsize[0] / 2 - reader.get_max_height() / 2)
+        if opts.height:
+            align_height = opts.height
+        else:
+            align_height = reader.get_max_height()
+        align_y_offset = int(scrsize[0] / 2 - align_height / 2)
         bc.down_line(align_y_offset)
     else:
         align_pad = ""