macOS does not apply one universal font-size setting to every app and interface. Decide whether you need supported app text, the entire display interface, Finder labels, sidebars, web pages, or temporary magnification; each uses a different control.
2
Use Accessibility Text size
Open System Settings > Accessibility > Display > Text size when available. Choose a larger default or adjust supported apps individually, then reopen an affected window and confirm the text changes without hiding controls.
Open System Settings > Displays and choose a larger-text display option when the whole interface is too small. This changes effective workspace size as well as text, so check menu bars, dialog buttons, and multi-display arrangements afterward.
4
Adjust Finder and desktop labels
Open a Finder window or click the desktop, choose View > Show View Options, and set Text size and Icon size for that view. Use as Defaults only when you want comparable Finder folders to inherit the choice.
5
Adjust sidebars and apps
Review the Sidebar icon size setting and the app's own View or Settings controls. In browsers, Command-plus and Command-minus normally control page zoom; editors and communication apps may store a separate text-size preference.
6
Use Zoom for temporary magnification
Open System Settings > Accessibility > Zoom and configure the supported keyboard shortcuts, trackpad gesture, or hover-text behavior. Learn the exit shortcut before enabling full-screen zoom so you can return to the normal view.
7
Verify every important workspace
Check the Finder, browser, mail, document editor, external displays, and any app with dense controls. Reduce only the setting causing clipped labels or lost workspace rather than undoing all accessibility changes.
Video walkthrough
If it does not work
If one app ignores the chosen size, look for that app's own accessibility or zoom setting and update it before assuming macOS failed. If the display becomes blurry, use a resolution or scaling option offered by macOS for that display and avoid third-party tools that force unsupported modes.
ⓘ Sources and verification
Checked against official documentation on . Scope: macOS.
Follow the linked first-party guidance if labels differ after a platform or app update.
