From 9834d6e97a53d6f24c9c1b690cabecac22319d07 Mon Sep 17 00:00:00 2001
From: Shawn Shan <shansixioing@uchicago.edu>
Date: Wed, 29 Jul 2020 23:03:14 -0500
Subject: [PATCH] Update README.md

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index cd0a836..7fd592a 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ Options:
 * `-d`, `--directory`  : the directory with images to run protection.
 * `-g`, `--gpu`        : the GPU id when using GPU for optimization.
 * `--batch-size`       : number of images to run optimization together. Change to >1 only if you have extremely powerful compute power. 
-* `--format`      : format of the output image. 
+* `--format`      : format of the output image (png or jpg). 
 
 when --mode is `custom`: 
 * `--th`       : perturbation threshold