don't attempt to redownload embeded images

src/images/mod.rs

@@ -66,6 +66,7 @@ impl ImageDownloader {
         evaluate_xpath!(context, xpath, node_vec);
         for mut node in node_vec {
             if let Some(url) = node.get_property("src") {
+                if !url.starts_with("data:") {
                     if let Ok(url) = url::Url::parse(&url) {
                         let parent_url = match self.check_image_parent(&node, &url) {
                             Ok(url) => Some(url),
@@ -85,6 +86,7 @@ impl ImageDownloader {
                     }
                 }
             }
+        }
 
         Ok(())
     }