diff --git a/website/handlers/router.ts b/website/handlers/router.ts
index 02746ec04..f1521bd82 100644
--- a/website/handlers/router.ts
+++ b/website/handlers/router.ts
@@ -99,9 +99,18 @@ export const router = (
     }
 
     for (const { pathTemplate: routePath, handler } of routes) {
-      const pattern = urlPatternCache[routePath] ??= new URLPattern({
-        pathname: routePath,
-      });
+      const pattern = urlPatternCache[routePath] ??= (() => {
+        let url;
+        if (URL.canParse(routePath)) {
+          url = new URL(routePath);
+        } else {
+          url = new URL(routePath, "http://localhost:8000");
+        }
+        return new URLPattern({
+          pathname: url.pathname,
+          search: url.search,
+        });
+      })();
       const res = pattern.exec(req.url);
       const groups = res?.pathname.groups ?? {};