diff --git a/README.md b/README.md
index 94c09c4d5bf5409ea64f8feed8f6f94e76d41d76..9437eaf7d5840e934a4a22b621608bcc095dd6c6 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,6 @@ There are 3 steps in this tutorial.
 ## Step 0. Before we start! You have to prepare...
 
 In this part, I'll show a example code of self-rotating 3d cube and a example output of it.\
-[https://git.ajou.ac.kr/Jiyoung_Moon/mouse-drag-for-transform-camera/-/raw/master/self-rotating-cube.gif](https://git.ajou.ac.kr/Jiyoung_Moon/mouse-drag-for-transform-camera/-/raw/master/self-rotating-cube.gif)\
 ![self-rotating-cube](self-rotating-cube.gif)
 This code is used for the next steps.
 
@@ -36,13 +35,13 @@ In this part, we make the codes for the mouse dragging.\
 This is related to the `addEventListener` of HTML DOM event and JS.\
 We make 3 functions with describtion of them.\
 Also, in this part, there are some parts that could be hard to understand, so I add a gif so that the students can understand it well.\
-[https://git.ajou.ac.kr/Jiyoung_Moon/mouse-drag-for-transform-camera/-/raw/master/description.gif](https://git.ajou.ac.kr/Jiyoung_Moon/mouse-drag-for-transform-camera/-/raw/master/description.gif)
+![description](description.gif)
 
 ## Step 4. It's done!!! Try it!!!
 
 At the end, the students can make his/her own mouse dragging tranformation of camera.\
 Also, the students can try mouse dragging to transform camera.\
-[https://git.ajou.ac.kr/Jiyoung_Moon/mouse-drag-for-transform-camera/-/raw/master/final.gif](https://git.ajou.ac.kr/Jiyoung_Moon/mouse-drag-for-transform-camera/-/raw/master/final.gif)
+![final](final.gif)
 
 ## Result