gedit zagotavlja poudarjanje skladnje za širok obseg označevalnih, programskih in znanstvenih jezikov. V primeru da gedit prepozna uporabljeno skladnjo, jo bo samodejno poudaril.

If your syntax or language is not highlighted upon startup, you can select the appropriate syntax or language by clicking View Highlight Mode, and then choosing the desired syntax. Alternately, you can select the syntax name from a list at the bottom of the gedit window.