diff --git a/docs/res/qrcode_dangdang.png b/docs/res/qrcode_dangdang.png
index 569ce1c..15db672 100644
Binary files a/docs/res/qrcode_dangdang.png and b/docs/res/qrcode_dangdang.png differ
diff --git a/docs/res/qrcode_jingdong.png b/docs/res/qrcode_jingdong.png
index 8f623b2..6be018d 100644
Binary files a/docs/res/qrcode_jingdong.png and b/docs/res/qrcode_jingdong.png differ