diff --git a/docker/routlin-dash/app/view_page.py b/docker/routlin-dash/app/view_page.py
index 390bfff..4760fa4 100644
--- a/docker/routlin-dash/app/view_page.py
+++ b/docker/routlin-dash/app/view_page.py
@@ -465,6 +465,7 @@ DDNS_LOG_MAX = 50
 def _ddns_log_tail():
     log_path = f'{CONFIGS_DIR}/ddns.log'
     try:
+        size_kb = os.path.getsize(log_path) / 1024
         with open(log_path) as f:
             lines = f.readlines()
         if not lines:
@@ -473,10 +474,11 @@ def _ddns_log_tail():
         tail   = lines[-DDNS_LOG_MAX:]
         shown  = len(tail)
         hidden = total - shown
+        size_str = f'{size_kb:.1f}KB'
         if hidden > 0:
-            summary = f'Showing last {shown} lines ({hidden} lines not shown)'
+            summary = f'Log file size: {size_str}. Showing last {shown} lines ({hidden} lines not shown).'
         else:
-            summary = f'Showing {shown} lines'
+            summary = f'Log file size: {size_str}. Showing {shown} lines.'
         return ''.join(tail).strip(), f'<p class="text-muted" style="margin-top:0.5em;">{summary}</p>'
     except FileNotFoundError:
         return '(log file not found)', ''