diff --git a/src/api/posts.rs b/src/api/posts.rs
index 2458895..31d8f74 100644
--- a/src/api/posts.rs
+++ b/src/api/posts.rs
@@ -173,8 +173,15 @@ fn clean_html(input: &str) -> String {
         .add_generic_attributes(&["class", "aria-hidden", "aria-label", "id", "role", "accesskey", "title"])
         .add_tags(&["details", "summary"])
         .url_relative(ammonia::UrlRelative::PassThrough)
-        .clean(input)
-        .to_string()
+        .add_tag_attributes("a", &["class", "aria-hidden", "aria-label"])
+        .add_tag_attributes("h1", &["id", "class"])
+        .add_tag_attributes("h2", &["id", "class"])
+        .add_tag_attributes("h3", &["id", "class"])
+        .add_tag_attributes("h4", &["id", "class"])
+        .add_tag_attributes("h5", &["id", "class"])
+        .add_tag_attributes("h6", &["id", "class"]);
+    
+    builder.clean(input).to_string()
 }
 
 #[derive(Debug, Clone)]