The zoom in keyboard shortcut, mapped for every case

#Which zoom do you actually mean?

The reason searching for a zoom in keyboard shortcut returns scattered, contradictory answers is that three different features share the word. Before you memorize any keys, decide which one you are after:

• Content zoom. Make the text and images inside one app or web page larger, while everything else on screen stays put. This is what you want ninety percent of the time.
• Screen zoom. Magnify the entire display, pixels and all, like a magnifying glass moving over the desktop. This is an accessibility feature you switch on first.
• The Zoom app. The video-calling app named Zoom, which has nothing to do with either of the above and has its own set of shortcuts.

Get the category right and the shortcut is obvious. Get it wrong and you will press keys that do nothing. The rest of this page takes them one at a time.

#Content zoom: the one you probably want

Inside a browser, a document, a PDF viewer or almost any Mac or Windows app, the shortcut is the modifier key plus the plus or minus key.

Works in Chrome, Safari, Firefox, Edge, most text editors, Preview, Photos and Finder icon views. A handful of apps opt out, but this is the default.

Here is the detail nearly every short answer skips, and it is the whole reason one of the top search results is literally titled after the shortcut changing to “Ctrl =”. On a US keyboard the plus sign lives above the equals key, so a true plus requires Shift. Menus print the shortcut as Command +, which makes people press Command, Shift and the plus key together. You do not have to. Apps accept the bare equals key. Command and equals zooms in with no Shift involved, which is why the equals key is the one worth learning. The plus key still works if you prefer it; it is just extra effort.

Two more things worth knowing. First, in most browsers and many editors you can hold the modifier and scroll: Command or Ctrl plus a two-finger scroll or mouse wheel zooms continuously, which is smoother than tapping the key repeatedly. Second, these combinations are as consistent across the system as the copy and paste keys are; if you have ever wondered why the modifier changes between platforms, the same logic that governs how to copy on a Mac governs zoom, Command on macOS where Windows uses Ctrl.

#Screen zoom: magnifying the whole display

When you want to magnify everything on screen, not resize one app, you are asking for the operating system magnifier. It is off by default, so the keys do nothing until you enable it once.

On a Mac

Open System Settings, go to Accessibility, then Zoom, and turn on “Use keyboard shortcuts to zoom.” After that:

• Option, Command and = zooms the whole screen in.
• Option, Command and - zooms it back out.
• Option, Command and 8 toggles the magnifier on and off at your last level.

You can also tick “Use scroll gesture with modifier keys to zoom,” which lets you hold Control and scroll to magnify around the pointer. That one is my favorite for reading small print on a shared screen, because it follows the cursor.

On Windows

Windows ships a tool called Magnifier that is on tap without any setup:

• The Windows logo key and = turns Magnifier on and zooms in.
• The Windows logo key and - zooms out.
• The Windows logo key and Esc turns it off.

The difference to keep straight: content zoom lives in the app, screen zoom lives in the operating system. If Command and equals is not making things big enough, or you need to magnify a video, a menu or a photo that ignores app zoom, screen zoom is the tool.

#Zooming from a Windows keyboard on a Mac

Plenty of people run a Windows-branded keyboard into a Mac, and the labels stop matching. On that hardware, the Windows logo key acts as Command and the Alt key acts as Option. So Command and equals becomes Windows key and =, and the Mac screen-zoom combo becomes Alt, Windows key and =. The keys are in the same physical spots; only the printing lies.

If you are remapping a Windows keyboard for real, macOS lets you swap the modifiers in System Settings under Keyboard, so the Command key sits where your thumb expects it. Mapping other Windows-only keys to Mac actions is its own small project; I worked through one example, turning the Print Screen key into a screenshot trigger, in how to map Print Screen on a Windows keyboard to a Mac screenshot. The same approach applies to any key you want to repurpose.

While we are on the subject of capture: zoom changes what you see, not what a screenshot records. A screen grab captures actual pixels at their real size regardless of your zoom level, which trips people up when they zoom in to read something and then wonder why the screenshot looks different. If precise capture is what you are really after, capturing a full web page on a Mac is the more direct route than zooming out to fit it all on screen.

#The Zoom app is a different question

If you searched for a zoom shortcut and meant the video-call app, none of the above applies. Zoom the app has its own shortcuts for muting your microphone, toggling your camera and starting a screen share, and they are configured inside Zoom’s own settings rather than the operating system. They also collide with the search term in a way that makes both topics harder to look up, which is exactly why it pays to know which one you want.

I keep the meeting-app shortcuts in a separate reference so this page stays about screen zoom: the Zoom keyboard shortcuts for Mac covers mute, video and share, including which ones work when the Zoom window is in the background. If your goal was to run a call more smoothly rather than enlarge text, start there.

One honest note, since I build a Mac utility and could be tempted to overstate this: no third-party app can replace the system zoom shortcuts, and none should try. The plus and minus keys are the right answer and they are already built in. What a notch utility like the one I make does around calls is a different job, surfacing mute and leave controls where your eyes already are, not remapping how you zoom.

#When the shortcut does nothing

If the keys refuse to work, it is almost always one of these:

• The app opts out. Some apps, especially full-screen games and a few design tools, bind zoom to their own keys or to a mouse gesture. Check that app’s shortcut list rather than assuming the system default.
• You are expecting screen zoom without enabling it. On a Mac, the Option-Command combo does nothing until you switch on Accessibility zoom, as above. That is the single most common “the shortcut is broken” report, and it is not broken, just off.
• A key is being intercepted. A launcher, a clipboard tool or a window manager may have grabbed Command and equals for something else. Quit suspects one at a time to find the culprit.
• You are on the wrong layout. On non-US keyboards the plus, minus and equals keys sit in different places, so the physical key that zooms may not be where a US guide says. Fall back to the on-screen menu’s View menu to confirm your machine’s actual binding.

None of this needs an app to fix. The zoom in keyboard shortcut is one of the few things macOS and Windows both handle well out of the box, and the fastest fix is usually confirming which of the three zooms you are actually asking for.

#Frequently asked questions