Screen Resolution and Display Scaling
How to adjust display scaling, fix blurry text, and configure HiDPI settings for sharp text on any screen
Display scaling makes everything on screen bigger or smaller without changing your resolution. It's how you make a 4K monitor usable without squinting, or how you make a small laptop screen show more content. When scaling goes wrong, you get blurry text, fuzzy icons, or apps that look weirdly large or tiny. Test your display's resolution and scaling behavior at thetest.com/display.
macOS doesn't use percentage-based scaling like Windows. Instead, it renders at 2x the displayed resolution on Retina screens and lets you pick how much space you want.
- Open System Settings > Displays
- Select the display you want to adjust — you'll see resolution options ranging from Larger Text to More Space
- Default is the recommended setting that balances sharpness and screen real estate
- Move toward More Space to fit more content (everything gets smaller) or Larger Text to make everything bigger
- Hold Option while clicking a resolution option to reveal additional scaled resolutions for finer control
- For external monitors, select the external display in the sidebar first — each connected display can have its own scaling setting
Why text looks blurry on external monitors with a Mac:
macOS is optimized for Retina displays (around 220 PPI). If your external monitor is a standard 1080p or 1440p display (around 100-110 PPI), text will look noticeably less sharp than on your MacBook's built-in screen. This isn't a settings problem — it's a pixel density difference. Apple also removed subpixel antialiasing (the technique that made text look smooth on low-PPI screens), which makes the difference more pronounced.
Options for sharper text on non-Retina external monitors:
- Use a 4K or 5K monitor — at 27 inches and 4K resolution, you get close to Retina pixel density
- If you have a 4K monitor and things look too small at native resolution, use the Larger Text scaling options, which render at 2x and downscale for sharper results than running at a lower resolution
- Third-party tools like BetterDisplay can force HiDPI modes on non-Retina displays, which renders at 2x resolution and downscales — sharper text at the cost of GPU load and an effectively lower working resolution
Frequently Asked Questions
What's the difference between resolution and scaling?▾
Resolution is the total number of pixels your display shows (like 1920x1080 or 3840x2160). Scaling controls how big things look at that resolution. A 4K monitor at 150% scaling still uses all 3840x2160 pixels, but the operating system renders interface elements larger so they're comfortable to read. Lowering the resolution to make things bigger produces blurrier results than keeping native resolution and increasing scaling.
Why does my external monitor have blurry text but my laptop screen is sharp?▾
Your laptop likely has a HiDPI (Retina) display with high pixel density, while your external monitor has a lower pixel density. At standard DPI (around 100 PPI), individual pixels are visible up close, making text and edges look rougher. The fix is either to use a 4K or higher-resolution external monitor, or to accept the slight quality difference — it's a hardware limitation, not a settings problem.
Is fractional scaling (125%, 150%) bad?▾
On Windows, the preset fractional values (125%, 150%) work well for most apps. Custom values and some older apps may look slightly blurry because the OS has to do bitmap scaling. On Linux with GNOME Wayland, fractional scaling has improved significantly but can still cause minor rendering artifacts in some apps. On macOS, the system handles its own version of fractional scaling seamlessly through the "Larger Text" to "More Space" slider.
How do I make text bigger without changing everything else?▾
On Windows, go to Settings > Accessibility > Text size to increase just the text size without scaling icons and UI elements. On macOS, the scaling options affect everything uniformly. On mobile, use the Font size setting separately from Display size. In any browser, press Ctrl + Plus (or Cmd + Plus on Mac) to zoom just that page.
What scaling should I use for a 4K monitor?▾
For a 27-inch 4K monitor, 150% is the most common recommendation (and what Windows defaults to). At 32 inches, 125-150% works well. At 100%, everything is very small but you get maximum screen real estate. At 200%, you get Retina-quality sharpness but the same usable space as a 1080p monitor — only worth it if sharpness is your top priority.