diff --git a/_config.yml b/_config.yml
index 85a2d24..c568430 100644
--- a/_config.yml
+++ b/_config.yml
@@ -165,7 +165,7 @@ gitalk:
   repo:
   owner:
   admin:
-
+  md5: false
 # https://giscus.app/zh-CN
 giscus:
   enable: false
diff --git a/layout/_partial/after-footer.ejs b/layout/_partial/after-footer.ejs
index b6c5c5b..3a7665a 100644
--- a/layout/_partial/after-footer.ejs
+++ b/layout/_partial/after-footer.ejs
@@ -85,14 +85,18 @@
 
 <% if (theme.gitalk.enable && theme.gitalk.clientID && theme.gitalk.clientSecret) { %>
   <%- js({src: vendorCdn(theme.vendor.js.gitalk)[0], 'data-pjax': true}) %>
+  <% if (theme.gitalk.md5) { %>
+    <script src="https://fastly.jsdelivr.net/npm/blueimp-md5@2.19.0/js/md5.min.js"></script>
+  <% } %>
   <script data-pjax>
+    const id = <%= theme.gitalk.md5 ? 'md5(location.pathname)' : 'location.pathname' %>
     const gitalk = new Gitalk({
       clientID: '<%= theme.gitalk.clientID %>',
       clientSecret: '<%= theme.gitalk.clientSecret %>',
       repo: '<%= theme.gitalk.repo %>',
       owner: '<%= theme.gitalk.owner %>',
       admin: <%- JSON.stringify(theme.gitalk.admin) %>,
-      id: location.pathname, // Ensure uniqueness and length less than 50
+      id: id, // Ensure uniqueness and length less than 50
       distractionFreeMode: false // Facebook-like distraction free mode
     })
     gitalk.render('comments')