diff --git a/src/server/http.rs b/src/server/http.rs
index 615cbba..68d7a2b 100644
--- a/src/server/http.rs
+++ b/src/server/http.rs
@@ -186,6 +186,10 @@ fn get_content_type(file_path: &str) -> &'static str {
         "audio/mpeg"
     } else if file_path.ends_with(".mp4") {
         "video/mp4"
+    } else if file_path.ends_with(".pdf") {
+        "application/pdf"
+    } else if file_path.ends_with(".md") {
+        "text/markdown"
     } else {
         "text/plain"
     }
@@ -354,4 +358,4 @@ fn log_to_file(message: &str) {
         let log_message = format!("[{}] {}\n", timestamp, message);
         let _ = file.write_all(log_message.as_bytes());
     }
-}
+}
\ No newline at end of file