diff --git a/griddle b/griddle
index 5658899..900d8bd 100755
--- a/griddle
+++ b/griddle
@@ -14,8 +14,8 @@ get_image_dimension() {
 }
 
 main() {
-	if test "$#" -ne 2; then
-		printf "Usage: griddle <inputfile> <outputfile>\n"
+	if test "$#" -ne 4; then
+		printf "Usage: griddle <inputfile> <columns> <rows> <outputfile>\n"
 		return 1
 	fi
 
@@ -25,7 +25,10 @@ main() {
 		return 2
 	fi
 
-	outputfile="$2"
+	columns="$2"
+	rows="$3"
+
+	outputfile="$4"
 	if test -e "$outputfile"; then
 		printf "Output file $outputfile already exists. Overwrite? (y/N) "
 		read response
@@ -40,7 +43,7 @@ main() {
 	width="$(get_image_dimension $inputfile $WIDTH)"
 	height="$(get_image_dimension $inputfile $HEIGHT)"
 
-	echo "$inputfile" "$outputfile" "Dimensions: $width x $height"
+	echo "$inputfile" "columns: $columns" "rows: $rows" "$outputfile" "Dimensions: $width x $height"
 }
 
 main "$@"