diff --git a/2000/01/01/hello-world/index.html b/2000/01/01/hello-world/index.html
index 9b074bd7..c873e92c 100644
--- a/2000/01/01/hello-world/index.html
+++ b/2000/01/01/hello-world/index.html
@@ -378,7 +378,7 @@
 
     
       <div id="alipay" style="display: inline-block">
-        <img id="alipay_qr" src="/images/Alipay.jpg" alt="Cool-Y 支付宝">
+        <img id="alipay_qr" src="/images/Alipay.png" alt="Cool-Y 支付宝">
         <p>支付宝</p>
       </div>
     
diff --git a/2018/11/16/BIBA访问控制模型实现(python)/index.html b/2018/11/16/BIBA访问控制模型实现(python)/index.html
index d4f255b9..4975d118 100644
--- a/2018/11/16/BIBA访问控制模型实现(python)/index.html
+++ b/2018/11/16/BIBA访问控制模型实现(python)/index.html
@@ -527,7 +527,7 @@
 
     
       <div id="alipay" style="display: inline-block">
-        <img id="alipay_qr" src="/images/Alipay.jpg" alt="Cool-Y 支付宝">
+        <img id="alipay_qr" src="/images/Alipay.png" alt="Cool-Y 支付宝">
         <p>支付宝</p>
       </div>
     
diff --git a/2019/01/16/wifi半双工侧信道攻击学习笔记/index.html b/2019/01/16/wifi半双工侧信道攻击学习笔记/index.html
index 22e6f767..55a3a38e 100644
--- a/2019/01/16/wifi半双工侧信道攻击学习笔记/index.html
+++ b/2019/01/16/wifi半双工侧信道攻击学习笔记/index.html
@@ -558,7 +558,7 @@ Server   -------wire----------|
 
     
       <div id="alipay" style="display: inline-block">
-        <img id="alipay_qr" src="/images/Alipay.jpg" alt="Cool-Y 支付宝">
+        <img id="alipay_qr" src="/images/Alipay.png" alt="Cool-Y 支付宝">
         <p>支付宝</p>
       </div>
     
diff --git a/2019/02/22/qq数据库的加密解密/index.html b/2019/02/22/qq数据库的加密解密/index.html
index d94a28f0..d32d02ed 100644
--- a/2019/02/22/qq数据库的加密解密/index.html
+++ b/2019/02/22/qq数据库的加密解密/index.html
@@ -406,7 +406,7 @@
 
     
       <div id="alipay" style="display: inline-block">
-        <img id="alipay_qr" src="/images/Alipay.jpg" alt="Cool-Y 支付宝">
+        <img id="alipay_qr" src="/images/Alipay.png" alt="Cool-Y 支付宝">
         <p>支付宝</p>
       </div>
     
diff --git a/2019/03/16/小米固件工具mkxqimage/index.html b/2019/03/16/小米固件工具mkxqimage/index.html
index 90892cc5..efc6d46c 100644
--- a/2019/03/16/小米固件工具mkxqimage/index.html
+++ b/2019/03/16/小米固件工具mkxqimage/index.html
@@ -413,7 +413,7 @@
 
     
       <div id="alipay" style="display: inline-block">
-        <img id="alipay_qr" src="/images/Alipay.jpg" alt="Cool-Y 支付宝">
+        <img id="alipay_qr" src="/images/Alipay.png" alt="Cool-Y 支付宝">
         <p>支付宝</p>
       </div>
     
diff --git a/images/Alipay.jpg b/images/Alipay.png
similarity index 100%
rename from images/Alipay.jpg
rename to images/Alipay.png