How can I make text larger without making the desktop too small?

Choose a slightly smaller HiDPI desktop size, rather than jumping straight to the lowest resolution. A smaller logical desktop makes text and interface elements larger, while HiDPI uses additional rendering pixels to keep their outlines clearer.

For the rendering background and a practical comparison, see choosing a comfortable macOS scaling mode.

Open the display’s Display Mode menu and try nearby HiDPI sizes until text is comfortable and your usual windows still fit. Increasing the desktop’s width and height gives you more space but makes items smaller. Decreasing them does the reverse. The resolution slider is another way to move through the available sizes.

The selected desktop mode applies to that display, so two monitors can use different sizes. Apps on the same desktop share its scale. Use an app’s own zoom or document-view setting when you want just its content at a different size.

Selecting another available display mode is an immediate change and does not itself require a reboot. Installing a new system configuration can require activation or restart.

If the available choices are too far apart, enable flexible scaling or add a custom scaled resolution. Flexible scaling requires Pro. Adding specific custom sizes does not independently require Pro. Apply the configuration and complete the requested activation steps before selecting the new mode. The Mac and display still determine which sizes are usable.

Avoid a desktop so small that menus, dialogs or buttons fall outside the usable area. There is no single best size for every panel or viewing distance. If only one app’s text is too small, its own text-size or zoom setting can be a better fit than enlarging the entire desktop.

Changing desktop size does not add physical pixels to a monitor. See HiDPI for the difference between logical size and rendering resolution, and text clarity if the size is comfortable but text still looks poor.

For a Sidecar iPad whose available desktop sizes leave text too small, create a virtual screen matching the iPad’s aspect ratio, select a smaller logical desktop there, and mirror or stream it to the connected Sidecar display. The virtual screen supplies the larger interface. Streaming and mirroring require Pro, and streaming needs Screen Recording permission. If using a stream, review pointer interaction with its source desktop. The displayed image and the underlying Sidecar desktop are separate.

Flexible scaling adds desktop-size choices. It does not provide an independent interface-scale setting that bypasses macOS’s rendering scale. For example, a 2560 × 1440 HiDPI desktop on a 4K monitor normally renders at 5120 × 2880 before being reduced to the 4K output. BetterDisplay cannot keep that same desktop size in HiDPI while forcing its rendering surface to exactly 3840 × 2160. See HiDPI rendering cost when choosing a size.