diff --git a/README.md b/README.md
index 9f397dc0..bd0430c8 100644
--- a/README.md
+++ b/README.md
@@ -964,6 +964,12 @@ quick outline of the up2k protocol, see [uploading](#uploading) for the web-clie
 
 up2k has saved a few uploads from becoming corrupted in-transfer already; caught an android phone on wifi redhanded in wireshark with a bitflip, however bup with https would *probably* have noticed as well (thanks to tls also functioning as an integrity check)
 
+regarding the frequent server log message during uploads;  
+`6.0M 106M/s 2.77G 102.9M/s n948 thank 4/0/3/1 10042/7198`
+* this chunk was `6 MiB`, uploaded at `106 MiB/s`
+* on this http connection, `2.77 GiB` transferred, `102.9 MiB/s` average, `948` chunks handled
+* client says `4` uploads OK, `0` failed, `3` busy, `1` queued, `10042 MiB` total size, `7198 MiB` left
+
 
 ## why chunk-hashes
 
diff --git a/copyparty/httpcli.py b/copyparty/httpcli.py
index a54bce3e..924e1f95 100644
--- a/copyparty/httpcli.py
+++ b/copyparty/httpcli.py
@@ -1127,8 +1127,10 @@ class HttpCli(object):
             except:
                 self.log("failed to utime ({}, {})".format(fin_path, times))
 
+        cinf = self.headers.get("x-up2k-stat", "")
+
         spd = self._spd(post_sz)
-        self.log("{} thank".format(spd))
+        self.log("{} thank {}".format(spd, cinf))
         self.reply(b"thank")
         return True
 
diff --git a/copyparty/web/up2k.js b/copyparty/web/up2k.js
index 8eb5e299..237d3598 100644
--- a/copyparty/web/up2k.js
+++ b/copyparty/web/up2k.js
@@ -1924,7 +1924,10 @@ function up2k_init(subtle) {
             tasker();
         }
         function do_send() {
-            var xhr = new XMLHttpRequest();
+            var xhr = new XMLHttpRequest(),
+                bfin = Math.floor(st.bytes.finished / 1024 / 1024),
+                btot = Math.floor(st.bytes.total / 1024 / 1024);
+
             xhr.upload.onprogress = function (xev) {
                 pvis.prog(t, npart, xev.loaded);
             };
@@ -1944,6 +1947,8 @@ function up2k_init(subtle) {
             xhr.open('POST', t.purl, true);
             xhr.setRequestHeader("X-Up2k-Hash", t.hash[npart]);
             xhr.setRequestHeader("X-Up2k-Wark", t.wark);
+            xhr.setRequestHeader("X-Up2k-Stat", "{0}/{1}/{2}/{3} {4}/{5}".format(
+                pvis.ctr.ok, pvis.ctr.ng, pvis.ctr.bz, pvis.ctr.q, btot, btot - bfin));
             xhr.setRequestHeader('Content-Type', 'application/octet-stream');
             if (xhr.overrideMimeType)
                 xhr.overrideMimeType('Content-Type', 'application/octet-stream');