# Adjusting Window Pane Size In tmux, the size of window panes can be adjusted incrementally with the `resize-pane` command. For instance, to resize a pane in any direction (left, down, up, and right), use one of the following commands ``` resize-pane -L 10 resize-pane -D 10 resize-pane -U 10 resize-pane -R 10 ``` This will adjust the pane by *10* units in the corresponding direction. Of course, other values can be used for more significant size adjustments.