diff --git a/README.ja.md b/README.ja.md
index d0425bd..2b831bd 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -42,19 +42,15 @@ FlowMap はコンパイラの代替ではありません。実際のコード構
 
 ### Overview モード
 
-![Overview mode](docs/screenshots/overview.png)
+![Overview mode](docs/screenshots/overview.jpg)
 
 ### File Detail モード
 
-![File detail mode](docs/screenshots/file-detail.png)
+![File detail mode](docs/screenshots/file-detail.jpg)
 
 ### Calls モード
 
-![Calls mode](docs/screenshots/calls.png)
-
-## デモ
-
-![FlowMap demo](docs/demo/flowmap-demo.gif)
+![Calls mode](docs/screenshots/calls.jpg)
 
 ## インストール
 
diff --git a/README.ko.md b/README.ko.md
index e954f83..d0f0085 100644
--- a/README.ko.md
+++ b/README.ko.md
@@ -42,19 +42,15 @@ FlowMap은 컴파일러 대체제가 아닙니다. 실제 코드 관계를 눈
 
 ### Overview 모드
 
-![Overview mode](docs/screenshots/overview.png)
+![Overview mode](docs/screenshots/overview.jpg)
 
 ### File Detail 모드
 
-![File detail mode](docs/screenshots/file-detail.png)
+![File detail mode](docs/screenshots/file-detail.jpg)
 
 ### Calls 모드
 
-![Calls mode](docs/screenshots/calls.png)
-
-## 데모
-
-![FlowMap demo](docs/demo/flowmap-demo.gif)
+![Calls mode](docs/screenshots/calls.jpg)
 
 ## 설치
 
diff --git a/README.md b/README.md
index 01fa811..8f661a6 100644
--- a/README.md
+++ b/README.md
@@ -42,19 +42,15 @@ FlowMap is not a compiler replacement. It makes real code structure visible at t
 
 ### Overview mode
 
-![Overview mode](docs/screenshots/overview.png)
+![Overview mode](docs/screenshots/overview.jpg)
 
 ### File detail mode
 
-![File detail mode](docs/screenshots/file-detail.png)
+![File detail mode](docs/screenshots/file-detail.jpg)
 
 ### Calls mode
 
-![Calls mode](docs/screenshots/calls.png)
-
-## Demo
-
-![FlowMap demo](docs/demo/flowmap-demo.gif)
+![Calls mode](docs/screenshots/calls.jpg)
 
 ## Installation
 
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