diff --git a/ts/html/links.ts b/ts/html/links.ts
index 8ed0850..1fd9b6b 100644
--- a/ts/html/links.ts
+++ b/ts/html/links.ts
@@ -1,6 +1,10 @@
 // @ts-ignore
 import { getPngMetadata } from "/scripts/pnginfo.js";
 
+if (!document.title.includes('rgthree')) {
+  throw new Error('rgthree: Skipping loading of js file not meant for app.');
+}
+
 type SerializedLink = [
   number, // this.id,
   number, // this.origin_id,