diff --git a/site.js b/site.js
index 3de864e..4496fc1 100644
--- a/site.js
+++ b/site.js
@@ -9,6 +9,7 @@ let route = process.env.route || './test.txt';
 let pageLimit = process.env.pageLimit || Infinity;
 let blacklist = (process.env.blacklist + '').split(',') || [];
 let greylist = (process.env.greylist + '').split(',') || [];
+let rel = (process.env.rel == 'relative');
 let hh;
 let percent = 0;
 let d = process.env.depth || 1;
@@ -53,6 +54,7 @@ async function urlCollector(url, path, file, useLimit, data2) {
             
         }
         if (!h2) return true;
+        if (rel && h2.host != new URL(url).host) return true;
         for (let g of greylist) {
             if (h2.toString().includes(g) && g != '') return true;
         }