How to turn on private browsing in Safari on Mac: steps, default setting, and locking

Private browsing keeps Safari from saving some details on your Mac. Apple says private browsing details are not kept, and they are not shared across devices. Browsing in a private window is not stored in iCloud open tabs, and Handoff stays off. Cookies and website data changes are not saved either.

Which Safari version these steps cover

Apple's current Safari help pages are labeled macOS 27 Golden Gate and Safari 27.0. The Safari page on apple.com describes that release as prerelease, so the current stable version is not confirmed. Apple's guide for Safari 13.0 on macOS Catalina 10.15 uses the same File > New Private Window path. The steps here follow that path, but your menu wording may shift slightly on your version.

Open a private window from the File menu

Start with Safari open on your Mac. Click File in the menu bar at the top of the screen. Choose New Private Window from the list. Safari opens a new window that is private, and you browse in it as you normally would.

You do not always need a new window. Apple's guide says you can also switch to a private browsing window that is already open. Click the private window you already have and carry on. This helps when a private window is sitting behind your other windows.

Confirm you are in a private window

Apple says a private browsing window has a dark Smart Search field with white text. That is your check. Look at the field at the top of the window before you type anything sensitive. If the field is not dark with white text, you are not in a private window, even if you meant to open one.

Quick checks before you browse

• Look at the Smart Search field first. Dark with white text means private.
• If the window looks normal, close it and choose File > New Private Window again.
• If you have several windows open, check the one you are typing in. Private and normal windows can sit side by side.
• Remember that the field only tells you about the window. It does not tell you what the sites you visit can see.

Keyboard shortcut for New Private Window

Apple's Safari help pages do not list a keyboard shortcut for New Private Window. Apple's keyboard page explains the modifier keys: Command (⌘), Option (⌥), Control (⌃), and Shift (⇧). It lists ⇧⌘N for creating a new folder in Finder, not for Safari.

MacKeeper, a third-party site, says to press ⇧⌘N to open a private window in Safari. Apple does not confirm that claim. Open the File menu and look next to New Private Window. If a shortcut is shown there, use it. If not, use the menu.

Make private windows open by default

If you want Safari to start in private mode every time, change one setting. Choose Safari > Settings, click General, and open the Safari opens with pop-up menu. Select A new private window. Apple's personal safety guide gives these same steps.

This setting controls what Safari opens when it launches. It does not change how you open regular windows later. For a normal window, choose File > New Window.

Expect a few surprises. Sites you normally stay signed in to may ask for a login again. Apple's notes say cookies and website data changes are not saved in private windows, so a sign-in from a private session does not carry over to your normal windows.

What to do if the option is missing

If A new private window is not in the pop-up menu, Apple says to check one more setting. On macOS 13 or later, open System Settings > Desktop & Dock. Make sure Close windows when quitting an application is selected.

On macOS 12 or earlier, the setting lives in System Preferences > General instead. Once it is on, return to Safari > Settings > General and open the pop-up menu again. The option should now appear.

Edge cases that catch people out

Private mode has a few known edge cases. An Apple Community thread from macOS Catalina 10.15.7 describes private-window cookies and history that stayed after a restart, even with both settings on. The thread closed with no confirmed fix. The user deleted the data by hand in Safari preferences.

If something similar happens to you, check both settings first. Then open Safari > Settings > Privacy and look at Manage Website Data. Remove All clears website data for every site, including your normal windows, so use it only when you need to.

Lock private windows so they stay private

Locking adds a second layer. Apple lets you require a password before anyone can view locked private tabs. On a Mac with Touch ID, you can require Touch ID instead. Choose Safari > Settings > Privacy, then select Require password to view locked tabs, or Require Touch ID to view locked tabs.

Apple says private windows lock automatically in several cases. The table shows the main triggers from Apple's guides. The exact timing depends on your macOS version and your settings.

To keep private windows open without a prompt, go back to Safari > Settings > Privacy and clear Require password to view locked tabs. Getting back in uses Face ID, Touch ID, or your device passcode or password, depending on your Mac.

Lock all private windows at once

Use Window > Lock All Private Windows when you step away and do not want to wait for an automatic lock. It locks every private window you have open, so you do not have to find each one.

Here is a worked example. Say you are checking a bank statement on a shared Mac. Open File > New Private Window first. Confirm the dark search field, then sign in. When you finish, choose Window > Lock All Private Windows before you walk away.

What private browsing does not hide

Private browsing covers what Safari saves on your Mac. It does not make you anonymous online. The sites you visit still see your visit, and your network or internet provider can still see traffic. Keep that in mind when you decide what to browse privately.

Many people expect more protection than private mode gives. A research paper on the end-user experience of private browsing found that most participants had incorrect mental models of how it works. The abstract gives no participant count, so treat it as a warning rather than a number.

Who uses private browsing, and how many

The best-known figures come from a June 2017 Google Consumer Surveys study, reported by Elie Bursztein. It found that 20.1% of surveyed users use private browsing. Among people who know about private browsing mode, a little over one in three, or 35%, use it.

Those numbers are from 2017. Treat them as a rough baseline, not a current measure. They still show that private mode is a common choice, and that many people are unsure what it does.

Tracking and fingerprinting protection in private windows

Apple says advanced tracking and fingerprinting protection is on by default in private windows. Secondary coverage says Safari 26 on macOS Tahoe turned it on for all browsing, not just private windows. Apple's Tahoe update notes do not confirm that claim.

Sources disagree, so do not build a plan around that difference. Check your macOS version under Apple menu > About This Mac. Then look at Safari's privacy settings on your own Mac to see what applies there.

Common mistakes with private browsing in Safari

• Assuming private windows hide you from your employer or your internet provider.
• Expecting a private window to leave nothing behind after a restart. The Catalina thread above shows that this can fail.
• Looking for a keyboard shortcut in Apple's help pages. None is listed, so use the File menu.
• Leaving private windows unlocked on a shared Mac. Turn on the password requirement in Privacy.
• Forgetting you are in a private window, then wondering why history is missing later.
• Changing the default setting and forgetting it. Safari keeps opening private until you change it back.

Fix pages that will not load in a private window

Some pages misbehave in private mode because of stored website data or extensions. A troubleshooting guide from CleanMyMac, a non-Apple site, suggests clearing website data first. Go to Safari > Settings > Privacy, choose Manage Website Data, and click Remove All.

Removing all website data signs you out of most sites, so only do it when you need to. If the page still fails, turn off extensions one at a time. Reload the page after each change. The guide says this shows which extension is the cause.

Next steps after you go private

When you finish a private session, you may want to clear what Safari saved in normal windows. The steps are in How to clear browsing history in Safari on Mac. That guide covers what stays behind after you clear it.

Check Safari > Settings after major macOS updates. Defaults can change between releases, and a setting you chose last year may not be what you see today.