diff --git a/src/options.cpp b/src/options.cpp
index e70335e..a1f45e3 100644
--- a/src/options.cpp
+++ b/src/options.cpp
@@ -3,14 +3,14 @@
 #include <unistd.h>
 
 void print_usage() {
-  fmt::println("USAGE: bezos [-p PORT] [-h] -d deck.md");
+  fmt::println("USAGE: bezos [-W width] [-H height] [-p PORT] [-h] -d deck.md");
 }
 
 Options parse_options(int argc, char* argv[]) {
   int opt = 0;
   Options result;
 
-  while((opt = getopt(argc, argv, "hp:d:")) != -1) {
+  while((opt = getopt(argc, argv, "hp:d:W:H:")) != -1) {
     switch(opt) {
       case 'h':
         print_usage();
@@ -23,6 +23,12 @@ Options parse_options(int argc, char* argv[]) {
         result.deck_given=true;
         result.deck_file = optarg;
         break;
+      case 'W':
+        result.pres_size.x = std::stoi(optarg);
+        break;
+      case 'H':
+        result.pres_size.y = std::stoi(optarg);
+        break;
       default:
         print_usage();
         return {.error=true};