Whether your eyes aren't sharp enough for the text on a website or the default settings on your MacBook render words too small to read, you'll want to know how to make text bigger on macOS.
Lower your Mac's resolution, change the desktop icon font size, and increase sidebar size or web page rendering scale to adjust text size.
Decrease screen resolution to increase font size1. Click the Apple icon in the top left corner.
2. Select System Preferences.3. Select Displays.4. Click Scaled.5. Select a lower resolution. If you see icons with different sized previews of text, select the icon that says Larger Text and click OK.
Increase text size for desktop icons1. Click View in the menu bar.2. Select Show View Options.
3. Click the number next to Text size.4. Select a larger number.
Increase the size of the sidebar in the Finder1 Click the Apple icon in the top left corner.2. Select System Preferences.
3. Click General.4. Click the field next to Sidebar icon size.5. Select Large.You’ve increased the size of the text for icons.