Enable mouse zoom

Enable mouse zoom to quickly enlarge (or reduce) your font size

Open preferences ⌘, (macOS) / Ctrl+Alt+S (Windows/Linux) and go to Preferences | Editor | General and select Change font size with Command+Mouse Wheel (on Mac) or Change font size with Control+Mouse (on Windows/Linux). Click OK to apply the changes.

Related Resources

Focus on your code
Focus on your code window
Configure font, font size, and more
Presentation Mode Font Size
Configure font size for Presentation Mode