diff --git a/src/main.rs b/src/main.rs
index 0d4716a4..19ffa8c7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -23,6 +23,7 @@ mod runtime;
 mod module;
 mod storage;
 mod ui;
+mod util;
 
 use module::bm::BM;
 
diff --git a/src/util/mod.rs b/src/util/mod.rs
new file mode 100644
index 00000000..6bef3251
--- /dev/null
+++ b/src/util/mod.rs
@@ -0,0 +1,6 @@
+use url::Url;
+
+pub fn is_url(url: &String) -> bool {
+    Url::parse(&url[..]).is_ok()
+}
+