diff --git a/README.md b/README.md
index 65bec2e8f..df9dcf5b0 100644
--- a/README.md
+++ b/README.md
@@ -205,4 +205,4 @@ We will regularly organize `DevStream Community Meeting`, please visit the [wiki
 - Message us on <a href="https://join.slack.com/t/devstream-io/shared_invite/zt-16tb0iwzr-krcFGYRN7~Vv1suGZjdv4w" target="_blank">Slack.</a>
 - For Chinese users, the WeChat group QR code is as below:
 
-![](docs/images/wechat-group-qr-code.jpg)
+![](docs/images/wechat-group-qr-code.png)
diff --git a/docs/README_zh.md b/docs/README_zh.md
index 4875df3f1..f00d389dc 100644
--- a/docs/README_zh.md
+++ b/docs/README_zh.md
@@ -72,4 +72,4 @@
 
 另外我们也有微信群，可以直接扫下方群二维码加入用户群。
 
-![](images/wechat-group-qr-code.jpg)
+![](images/wechat-group-qr-code.png)
diff --git a/docs/images/wechat-group-qr-code.jpg b/docs/images/wechat-group-qr-code.jpg
deleted file mode 100644
index 7825d2b4f..000000000
Binary files a/docs/images/wechat-group-qr-code.jpg and /dev/null differ
diff --git a/docs/images/wechat-group-qr-code.png b/docs/images/wechat-group-qr-code.png
new file mode 100644
index 000000000..405d8cae9
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