diff --git a/resources/scraper.js b/resources/scraper.js
index d29ada510d..feae0313ce 100644
--- a/resources/scraper.js
+++ b/resources/scraper.js
@@ -83,8 +83,8 @@
         return ans;
     }
 
-    const payload = JSON.parse(document.getElementById('payload').textContent);
     window.get_messages = get_messages;
     window.abort_download = abort_download;
+    const payload = JSON.parse(document.getElementById('payload').textContent);
     download(payload.req, payload.data);
 })();
diff --git a/src/calibre/scraper/webengine_backend.py b/src/calibre/scraper/webengine_backend.py
index 8b1cabf231..b51ec8efaa 100644
--- a/src/calibre/scraper/webengine_backend.py
+++ b/src/calibre/scraper/webengine_backend.py
@@ -274,14 +274,16 @@ def worker(tdir: str, user_agent: str, verify_ssl_certificates: bool) -> None:
     return qt_worker(tdir, user_agent, verify_ssl_certificates, FetchBackend)
 
 
-def develop(url: str) -> None:
+def develop(*urls: str) -> None:
     from calibre.scraper.qt import WebEngineBrowser
     br = WebEngineBrowser()
-    res = br.open(url)
-    print(f'{res.code} {res.reason}')
-    print(res.headers)
-    print(len(res.read()))
+    for url in urls:
+        print(url)
+        res = br.open(url)
+        print(f'{res.code} {res.reason}')
+        print(res.headers)
+        print(len(res.read()))
 
 
 if __name__ == '__main__':
-    develop(sys.argv[-1])
+    develop(*sys.argv[1:])