Change text and window size using your operating system settings

The fastest way to make everything on your screen larger or smaller is through your operating system's display settings. On Windows, you adjust the scale — a percentage that enlarges all text, icons, and windows at once. On Mac, you change the resolution, which does the same thing. Both methods take about 30 seconds and affect your entire screen, not just one program.

On Windows 10 or 11, right-click on your desktop (the blank area with no icons), then select Display settings. Scroll down to the "Scale and layout" section. You will see a dropdown menu that says something like "100%" or "125%". Click it and choose a larger percentage — 125% makes everything about one-quarter bigger, 150% makes it half again as large. Click the percentage you want, and Windows will ask if you want to keep the change. Select Keep changes. You may need to restart some programs for the change to take full effect.

On Mac, click the Apple menu in the top-left corner, then System Settings (or System Preferences on older versions). Select Displays. At the bottom, you will see a row of resolution options. The option on the right makes text larger; the option on the left makes it smaller. Click your choice, and the change happens when ready.

Key Takeaways

  • Windows uses a scale percentage (100%, 125%, 150%) to enlarge everything on screen at once, found in Display settings under "Scale and layout".
  • Mac uses resolution settings in System Settings > Displays, where the rightmost option makes text and icons larger.
  • Browser zoom (Ctrl + Plus on Windows, Command + Plus on Mac) enlarges only the website or document you are viewing, not your entire screen.
  • If text looks blurry after you change the scale, restart your computer or the program you are using.
  • You can also enlarge individual windows by dragging the corner or edge of the window outward with your mouse.

Use browser zoom to enlarge just one website or document

If you want to make text bigger on only one website or in one document — without changing your entire screen — use your browser's zoom feature. This is different from changing your display settings and works the same way in Chrome, Firefox, Safari, and Edge.

Hold down Ctrl (on Windows) or Command (on Mac) and press the Plus key (+) to make the page larger. Each time you press it, the page zooms in by about 10%. Press it three or four times to see a noticeable difference. To zoom back out, hold Ctrl or Command and press the Minus key (−). To return to normal size, hold Ctrl or Command and press 0 (zero).

Your browser remembers the zoom level for each website, so if you zoom in on a news site, it will stay zoomed in the next time you visit. If you zoom in on a document in Google Docs or Microsoft Word Online, that zoom level stays the same until you change it again.

Drag the edges of windows to make them larger or smaller

You can also resize individual windows on your screen by dragging. Move your mouse to the edge or corner of any open window until the cursor changes to a double-headed arrow (it looks like ↔ or ↕). Then click and drag outward to make the window bigger, or inward to make it smaller.

On Windows, you can also double-click the title bar (the bar at the very top of the window with the program name) to make the window fill your entire screen. Double-click it again to return it to its previous size. On Mac, click the green button in the top-left corner of the window to make it fill the screen, or click it again to shrink it back.

Adjust text size in specific programs

Some programs let you change text size without affecting anything else. In Microsoft Word, Google Docs, or most email programs, you can select text and then click the font size dropdown (usually showing a number like "12" or "14") and choose a larger size. You can also use Ctrl + Plus or Command + Plus while the text is selected.

In Windows Notepad or other text editors, go to the Format menu and look for a "Font" or "Font Size" option. In most web browsers, you can also go to the menu (three horizontal lines in the top-right corner) and select Zoom to adjust just that page without changing your screen settings.

Fix blurry text after changing screen size

If text looks fuzzy or blurry after you change your display scale on Windows, the most common fix is to restart your computer. Windows sometimes needs to reload programs to display them correctly at the new scale. If restarting does not work, try restarting just the program that looks blurry.

If the problem persists, go back to Display settings and try a different scale percentage — sometimes 100%, 125%, or 150% work better than in-between numbers like 110%. On Mac, blurry text is rare, but if it happens, try selecting a different resolution in the Displays settings.

If you are using an external monitor (a separate screen plugged into your laptop), make sure you are changing the settings for that monitor, not your laptop screen. In Windows Display settings, scroll down and look for "Multiple displays" to see which screen you are adjusting.

Use accessibility features for more control

Both Windows and Mac have built-in magnifier tools that enlarge a portion of your screen without changing your display settings. On Windows, press the Windows key and type "Magnifier", then open the Magnifier app. It will enlarge the area around your cursor. You can adjust how much it zooms and whether it follows your mouse or stays in one place.

On Mac, go to System Settings > Accessibility > Display and turn on Zoom. Then hold Control and scroll your mouse wheel (or trackpad) up to zoom in, or down to zoom out. This is useful if you want to enlarge just part of your screen temporarily without changing your permanent display settings.

Frequently Asked Questions

Will changing my screen size affect my programs or files?

No. Changing your display scale or resolution only changes how large things appear on your screen. Your files, programs, and data remain exactly the same. If you change your mind, you can always change the scale back to what it was before.

Why does my screen look blurry after I change the scale?

Windows sometimes needs to reload your programs to display them correctly at a new scale. Restart your computer or the program that looks blurry. If that does not work, try a different scale percentage — 100%, 125%, and 150% usually work better than numbers in between.

Can I change the size of just the icons on my desktop?

On Windows, right-click on your desktop and select View, then choose Large icons, Medium icons, or Small icons. On Mac, open Finder, go to View in the menu bar, and select Icon Size. This changes only your desktop icons, not text elsewhere on your screen.

What is the difference between zoom and scale?

Scale (or resolution) changes your entire screen permanently until you change it back. Zoom changes only one website or document and resets when you close it or press Ctrl+0. Use scale for permanent changes; use zoom for temporary, single-page changes.

Can I use different scales on two monitors?

Yes. If you have two monitors plugged into your computer, go to Display settings and click on each monitor separately. You can set a different scale for each one. Windows will remember these settings the next time you plug in those monitors.