diff --git a/README.md b/README.md
index 52201f8f7..b91f45a7a 100644
--- a/README.md
+++ b/README.md
@@ -11,9 +11,9 @@
 
 <p align="center">
   <a href="https://www.hello-algo.com/">
-    <img src="https://www.hello-algo.com/index.assets/btn_read_online_dark.svg" width="145"></a>
+    <img src="https://www.hello-algo.com/index.assets/btn_read_online_dark.svg" height="45"></a>
   <a href="https://github.com/krahets/hello-algo/releases">
-    <img src="https://www.hello-algo.com/index.assets/btn_download_pdf_dark.svg" width="145"></a>
+    <img src="https://www.hello-algo.com/index.assets/btn_download_pdf_dark.svg" height="45"></a>
 </p>
 
 <p align="center">
diff --git a/en/README.md b/en/README.md
index 39c17bdff..791605196 100644
--- a/en/README.md
+++ b/en/README.md
@@ -11,7 +11,9 @@
 
 <p align="center">
   <a href="https://www.hello-algo.com/en/">
-    <img src="https://www.hello-algo.com/en/index.assets/btn_read_online_dark.svg" width="120"></a>
+    <img src="https://www.hello-algo.com/en/index.assets/btn_read_online_dark.svg" height="45"></a>
+  <a href="https://github.com/krahets/hello-algo/releases">
+    <img src="https://www.hello-algo.com/en/index.assets/btn_download_pdf_dark.svg" height="45"></a>
 </p>
 
 <p align="center">
diff --git a/ja/README.md b/ja/README.md
index be4ce2350..54f556580 100644
--- a/ja/README.md
+++ b/ja/README.md
@@ -11,7 +11,7 @@
 
 <p align="center">
   <a href="https://www.hello-algo.com/ja/">
-    <img src="https://www.hello-algo.com/en/index.assets/btn_read_online_dark.svg" width="120"></a>
+    <img src="https://www.hello-algo.com/en/index.assets/btn_read_online_dark.svg" height="45"></a>
 </p>
 
 <p align="center">
diff --git a/zh-hant/README.md b/zh-hant/README.md
index 255ea5674..27e43b35d 100644
--- a/zh-hant/README.md
+++ b/zh-hant/README.md
@@ -11,9 +11,9 @@
 
 <p align="center">
   <a href="https://www.hello-algo.com/zh-hant/">
-    <img src="https://www.hello-algo.com/zh-hant/index.assets/btn_read_online_dark.svg" width="145"></a>
+    <img src="https://www.hello-algo.com/zh-hant/index.assets/btn_read_online_dark.svg" height="45"></a>
   <a href="https://github.com/krahets/hello-algo/releases">
-    <img src="https://www.hello-algo.com/zh-hant/index.assets/btn_download_pdf_dark.svg" width="145"></a>
+    <img src="https://www.hello-algo.com/zh-hant/index.assets/btn_download_pdf_dark.svg" height="45"></a>
 </p>
 
 <p align="center">