How to Change Font Size in Gedit on Ubuntu 18.04 LTS?
Step 1: Click on 'show applications' at the bottom left. Do a search for gedit, click on it to open it.
Step 2: Click on 'Text Editor' in the top panel, and then click on 'Preferences.'
Step 3: Click on 'fonts and colors' tab.
Step 4: Uncheck 'Use the system fixed width font.'
Step 5: Click on box, next to 'editor font.'
Step 6: Use the '+' and '-' button to change font size that you want. After that, click on 'select' button.
Step 7: Close the preferences window.
It's done
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