diff --git a/TODOLIST.md b/TODOLIST.md
index db110e6..d0fe3a3 100644
--- a/TODOLIST.md
+++ b/TODOLIST.md
@@ -1,4 +1,6 @@
 ## Todo list
+* Core: balance window after split window.
+* Core: sometime, press key no respsone.
 * Browser: add cookie support
 * Browser: support pop window, such as emacs-china.org
 * Browser: add progressbar
@@ -6,4 +8,6 @@
 * Browser: implement js plugin like vimium
 * ImageViewer: add zoom support
 * VideoPlayer: remember video play progress.
+* PdfViewer: render current page and total page
+* PdfViewer: add goto page
 * Terminal: https://github.com/hrngultekin/pyqtermwidget5 looks good enough