The fastest way to enlarge text on any screen

The quickest method is to hold Ctrl (on Windows) or Command (on Mac) and press the plus sign (+) key. Each press makes text about 10 percent larger. You can repeat this as many times as you need. To shrink text back down, use the same keys with the minus sign (−) instead. This works in web browsers, email, documents, and most programs.

If your keyboard doesn't have a separate plus key, you can use Ctrl and the equals sign (=) on Windows—they produce the same result. On a Mac trackpad, you can also pinch outward with two fingers to zoom in, though this doesn't work in every program.

The zoom you set stays in place until you change it again. If you close the program and reopen it, most browsers and applications remember your zoom level for that specific site or document.

Key Takeaways

  • Hold Ctrl (Windows) or Command (Mac) and press the plus key to make text larger; press minus to shrink it back.
  • You can also adjust text size in your operating system settings so everything on your screen is larger by default, not just in one program.
  • If you have vision difficulties, Windows and Mac both have dedicated accessibility tools that enlarge text, magnify the cursor, and increase contrast.
  • Different programs store zoom settings differently—some remember your choice when you return, others reset to default.

Changing text size in Windows settings

If you want text to be larger everywhere on your computer—not just in one program—you can adjust it in Windows settings. Right-click on an empty area of your desktop and select Display settings. Look for the section labeled Scale and layout.

You will see a dropdown menu that says something like "100%" or "125%". Click it and choose a larger percentage. Windows offers options like 125%, 150%, or 175%. The higher the number, the larger everything becomes. Click explore and Windows will ask you to sign out and back in for the change to take full effect.

Be aware that some older programs may not resize smoothly with this setting—text might look blurry or buttons might not line up correctly. If that happens, you can lower the percentage or use the Ctrl+plus method in just that program instead.

Changing text size on a Mac

On a Mac, go to System Settings (or System Preferences on older versions) and click Displays. At the bottom of the window, you will see a slider labeled Resolution. Drag it to the left to make text and icons larger. The leftmost option usually says "Larger text" or shows a larger preview.

Your Mac will ask you to confirm the change. Once you do, everything on your screen—menus, icons, text in documents—will be larger. Unlike Windows, this change takes effect when ready without signing out.

If the preset sizes don't match what you need, you can also use the keyboard shortcut Command and plus sign in individual programs, just as you would on Windows.

Using accessibility tools for vision difficulties

Both Windows and Mac include built-in magnification tools designed for people with low vision. These go beyond straightforward text enlargement and can magnify your entire screen.

On Windows, open Settings, go to Accessibility, and select Magnifier. Turn it on and use the plus and minus buttons (or keyboard shortcuts) to zoom in on any part of your screen. You can set it to follow your cursor or magnify only the area around it. You can also increase the thickness of the cursor itself and boost color contrast to make text stand out more.

On a Mac, go to System Settings, click Accessibility, and select Zoom. Turn on Zoom and use Option and Command and equals sign to magnify. You can also enable Increase Contrast in the same menu to make text darker and backgrounds lighter, which helps readability without changing size.

Text size in email and messaging programs

Email and messaging apps often have their own text size controls separate from your browser or system settings. In Gmail, click the Settings gear icon and look for a Display density option—this controls how large the text appears in your inbox and messages. In Outlook, go to File, then Options, and search for Reading Pane to adjust message text size.

Most messaging apps like Slack, Teams, or Discord also respond to Ctrl+plus (Windows) or Command+plus (Mac), so you can zoom in without opening settings. If that doesn't work, check the app's preferences menu for a font size or zoom option.

Making text larger in documents and spreadsheets

In Microsoft Word, Google Docs, or similar programs, you can change text size in two ways. The quickest is to select the text you want to enlarge, then use the font size dropdown menu in the toolbar—it usually shows a number like "12" or "14". Click it and choose a larger size, or type a custom number.

If you want all new documents to open with larger text, you can change the default. In Word, go to Home, click the small arrow in the bottom right of the Font section, and change the default font size before creating a new document. In Google Docs, open a blank document, set your preferred text size, then go to File and select Save as template. Future documents will use that template.

Troubleshooting when text won't get bigger

If Ctrl+plus doesn't work, check that you are not in a mode that blocks keyboard shortcuts. Some full-screen games, presentations, or locked documents ignore zoom commands. Exit full-screen mode or presentation mode and try again.

If text in a specific website looks too small and zoom doesn't help, the website may have set a minimum font size that overrides your settings. Try using your browser's reader mode if it has one—most modern browsers include a reading view that strips away formatting and lets you control text size directly. In Chrome, Firefox, and Safari, look for a reader icon (usually three horizontal lines) in the address bar.

If your entire screen is blurry after changing display settings, lower the percentage back down. Some monitors and graphics cards don't scale smoothly at certain sizes. Stick with the preset options your system offers rather than custom percentages.

Frequently Asked Questions

Does making text bigger slow down my computer?

No. Changing text size or zoom level does not affect your computer's speed or performance. It is purely a display setting that tells your screen how to draw what is already there. You can zoom in and out as often as you want without any impact on how fast your programs run.

Will my zoom settings stay the same if I restart my computer?

System-wide settings (like Windows display scale or Mac resolution) stay in place after a restart. Browser zoom and program-specific zoom usually stay too, but this depends on the program. Most web browsers remember zoom for each website, so if you zoom in on one site, it will be zoomed in the next time you visit. Some programs reset to default zoom when you close and reopen them.

Can I make text bigger in videos or images?

Zooming in with Ctrl+plus will enlarge a video or image on your screen, but it does not improve the actual quality—you will see pixelation if you zoom too far. For videos, most players have their own zoom controls in the playback menu. For images, use your image viewer's zoom feature or open the image in a program like Paint or Preview that lets you enlarge it without losing quality.

What if I need text even bigger than the maximum zoom allows?

Use your operating system's magnifier tool instead of browser zoom. Windows Magnifier and Mac Zoom can enlarge your entire screen much further than standard zoom, up to 16 times the normal size. These tools are found in Accessibility settings on both systems and are designed for people who need significant magnification.