Private browsing on Mac stops your browser from storing your search history, cookies, and site data

Private browsing, also called Incognito mode in Chrome or Private Browsing in Safari and Firefox, creates a temporary session that doesn't save what you do. When you close the window, your browser forgets the sites you visited, the passwords you entered, and the tracking cookies that follow you across the web. On Mac, opening a private window takes one keystroke in any major browser.

This is useful when you're researching data brokers or checking what information about you is publicly available — you can browse without your activity being logged locally or added to your browsing profile. It's also practical on a shared Mac where you don't want your activity mixed into someone else's history.

Key Takeaways

  • Safari opens a private window with Command+Shift+N, and Firefox uses Command+Shift+P; Chrome uses Command+Shift+N as well.
  • Private browsing stops your browser from saving history, cookies, and autofill data, but your internet service provider and the websites you visit can still see your activity.
  • Private windows work the same as regular ones — you can bookmark, search, and fill forms normally — but nothing persists after you close them.
  • Private browsing is separate from a VPN; it hides your activity from your browser, not from your internet provider or the sites themselves.

Opening Private Browsing in Safari

Safari is the default browser on Mac. To open a private window, press Command+Shift+N. A new Safari window will open with a dark address bar and a message saying "Private Browsing is On." Everything you do in this window — searches, site visits, form entries — stays temporary.

You can open as many private windows as you want at the same time. Each one is independent. If you want to switch back to regular browsing, just open a normal Safari window with Command+N, and both types will run side by side on your Mac.

Opening Private Browsing in Chrome

Chrome calls private browsing Incognito mode. Open it by pressing Command+Shift+N. A new window appears with a dark theme and an incognito icon (a spy hat) in the top left corner. The address bar will say "You've gone Incognito" and explain that Chrome won't save your history, cookies, or site data.

Like Safari, you can run multiple Incognito windows at the same time. Closing one doesn't affect the others. If you close all Incognito windows, Chrome clears everything from that session.

Opening Private Browsing in Firefox

Firefox calls it Private Browsing. Press Command+Shift+P to open a private window. The window has a purple home icon and displays a message explaining that Firefox won't keep history, searches, or cookies. You can open multiple private windows and use them alongside regular Firefox windows.

Firefox also offers a Private Browsing with Tracking Protection option in its settings, which adds extra blocking of known tracking scripts. This runs in regular windows too if you enable it, but the private window is the fastest way to may support nothing is saved locally.

What Private Browsing Does and Doesn't Hide

Private browsing stops your Mac's browser from storing data locally. Your history doesn't appear in the History menu, cookies don't persist, and autofill won't remember what you typed. Downloads still appear in your Downloads folder, but the browser won't log which sites you downloaded from.

Private browsing does not hide your activity from your internet service provider, your employer's network (if you're on one), or the websites themselves. The sites you visit still see your IP address and can track you while you're browsing. If you want to hide your IP address, you need a VPN (Virtual Private Network), which is a separate tool. Private browsing and a VPN serve different purposes and can be used together.

Using Private Browsing to Check Data Broker Sites

When you're researching what information data brokers have collected about you, private browsing keeps your search activity separate from your regular browsing. Open a private window, search for data broker sites, and check what they show about you without that activity being added to your browser history or profile.

Keep in mind that the data broker sites themselves will still see your visit and your IP address. Private browsing only hides the activity from your own Mac and your browser's records. If you want to prevent the data broker from seeing your IP address, use a VPN in addition to private browsing.

Switching Between Private and Regular Browsing

You don't have to choose one or the other. You can have a private window and a regular window open at the same time. Use Command+Tab to switch between them, or use Mission Control (swipe up with four fingers on your trackpad) to see all open windows and click the one you want.

Bookmarks, saved passwords, and your browser settings are shared across both private and regular windows. If you bookmark a page in a private window, it stays in your bookmarks even after you close the private window. Only the temporary session data — history, cookies, and autofill — is cleared.

Frequently Asked Questions

Does private browsing hide my activity from my internet provider?

No. Your internet provider can still see which websites you visit and how much data you use. Private browsing only hides your activity from your browser and your Mac. To hide your activity from your internet provider, you need a VPN.

Can I use private browsing on a shared Mac to keep my activity hidden from other users?

Yes, private browsing prevents your history and cookies from being saved, so other users won't see what sites you visited in the browser's history menu. However, they may still see your activity in network logs or if they check the Mac's system files. Private browsing is browser-level privacy, not system-level.

Will websites know I'm using private browsing?

Most websites cannot detect private browsing directly. However, some sites may notice unusual behavior if you're blocking cookies or if your browser settings change. The site will still see your IP address and can track you during your visit.

Do I lose my bookmarks and saved passwords in private browsing?

No. Bookmarks, saved passwords, and browser settings are permanent and shared across private and regular windows. Only temporary data like history, cookies, and autofill entries are cleared when you close a private window.

Can I set my browser to always open in private mode?

Safari and Firefox don't have a built-in setting to always start in private mode, but you can manually open a private window each time. Chrome doesn't offer this option either. The fastest approach is to use the keyboard shortcut every time you start browsing.