Use fullscreen mode
When working with a large document, you may find it helpful to work in gedit's fullscreen mode. Using fullscreen mode will hide the menu bar, tab bar and the tool bar, presenting you with more of your text and allowing you to better focus on your tasks.
Turn on fullscreen mode
To turn on fullscreen mode, press F11. gedit's menu, title, and tab-bars will hide, and you will only be presented with the text of your current file.
If you need to perform an action from the gedit menu while working in fullscreen mode, move your mouse pointer to the top of the screen. The gedit menu bar will reappear, and you can select your desired action.
To switch between open tabs while in fullscreen mode, press either Ctrl+Alt+PgUp or Ctrl+Alt+PgDn.
Turn off fullscreen mode
To turn off fullscreen mode and return to the standard gedit window, press F11.
You can also move your mouse cursor to the top of the screen, and wait for the menu bar to appear. When the menu bar appears, select the Leave Fullscreen button.