diff --git a/README.md b/README.md
index e14a1ee..cb1ef42 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,11 @@ NOTE:
 
 Config registry mirror for Docker daemon with ```https://registry.docker-cn.com```
 
-![mirror](images/mirror.jpg)
+![mirror](images/mirror.png)
+
+Optional: config the CPU and memory for Kubernetes, 4GB RAM or more is suggested. 
+
+![resource](images/resource.png)
 
 Preload Kubernetes images form Alibaba Cloud Registry Service, NOTE: you can modify the ```images.properties``` for your own images
 
@@ -19,14 +23,14 @@ Preload Kubernetes images form Alibaba Cloud Registry Service, NOTE: you can mod
 Enable Kubernetes in Docker for Mac, and wait a while for Kubernetes is running
 
 
-![k8s](images/k8s.jpg)
+![k8s](images/k8s.png)
 
 
 ### Enable Kubernetes on Docker for Windows
 
 Config registry mirror for Docker daemon with ```https://registry.docker-cn.com```
 
-![mirror](images/daemon.png)
+![mirror](images/mirror_win.png)
 
 Optional: config the CPU and memory for Kubernetes, 4GB RAM or more is suggested. 
 
diff --git a/images/k8s.jpg b/images/k8s.jpg
deleted file mode 100644
index fd75fd5..0000000
Binary files a/images/k8s.jpg and /dev/null differ
diff --git a/images/k8s.png b/images/k8s.png
new file mode 100644
index 0000000..5785089
Binary files /dev/null and b/images/k8s.png differ
diff --git a/images/mirror.jpg b/images/mirror.jpg
deleted file mode 100644
index 511de27..0000000
Binary files a/images/mirror.jpg and /dev/null differ
diff --git a/images/mirror.png b/images/mirror.png
new file mode 100644
index 0000000..d8e7873
Binary files /dev/null and b/images/mirror.png differ
diff --git a/images/daemon.png b/images/mirror_win.png
similarity index 100%
rename from images/daemon.png
rename to images/mirror_win.png
diff --git a/images/resource.png b/images/resource.png
new file mode 100644
index 0000000..d2dc112
Binary files /dev/null and b/images/resource.png differ