diff --git a/site/static/app.js b/site/static/app.js
index 02e0a50..57be363 100644
--- a/site/static/app.js
+++ b/site/static/app.js
@@ -200,7 +200,7 @@ async function uploadAll() {
 function uploadFileWS(url, f, idx) {
   return new Promise(function (resolve, reject) {
     var ws = new WebSocket(url);
-    var CHUNK = 64 * 1024;
+    var CHUNK = 8 * 1024;
     var offset = 0;
     var startTime = Date.now();
     var lastProgress = 0;