1. Start word to open the target file to be edited, and click the page number mark at the bottom of the screen.
2. Double-click the selected page number with the mouse, and the page number will become editable after the cursor is selected.
3. Right-click the page number to open the drop-down menu, and change the text size in the text formatting menu. This paper takes the increase as an example to demonstrate.
4. Change the page number text to the required size and save it.