Private browsing hides your activity from your device, not from websites or your internet provider

When you open a private browsing window — called Incognito in Chrome, Private in Firefox and Safari, and InPrivate in Edge — your browser stops saving the normal records it usually keeps. It will not store your browsing history, cookies, cached images, or search queries. When you close the window, those records disappear.

What private browsing does not do is make you anonymous online. Websites still see your real IP address. Your internet service provider still sees which sites you visit. Your employer's network still logs your traffic if you are on their wifi. Private browsing is a tool for local privacy on your device — useful if you share a computer or want to keep searches separate — not a tool for hiding from networks or websites.

Key Takeaways

  • Private browsing windows stop your browser from saving history, cookies, and cached files, but only on your device.
  • Websites, internet providers, and network administrators can still see your activity even in private mode.
  • Private browsing is most useful when you share a device with other people or want to test how a website appears to someone not logged in.
  • Each browser has its own private mode with slightly different names and features, but they all work the same basic way.
  • Private browsing does not protect you from malware, phishing, or other security threats — it only hides local records.

How to open a private browsing window in each major browser

Chrome: Press Ctrl+Shift+N on Windows or Linux, or Cmd+Shift+N on Mac. You can also click the three-dot menu, select "New incognito window", and a new window opens with a dark theme and an incognito icon.

Firefox: Press Ctrl+Shift+P on Windows or Linux, or Cmd+Shift+P on Mac. The window will show a purple mask icon in the top left. You can also click the hamburger menu (three horizontal lines), select "New Private Window".

Safari: Press Cmd+Shift+N on Mac. A new window opens with a dark address bar. On iPad or iPhone, tap the tabs icon at the bottom right, then tap "Private" in the lower left corner.

Edge: Press Ctrl+Shift+P on Windows or Cmd+Shift+N on Mac. The window shows "InPrivate" in the top left corner. You can also click the three-dot menu and select "New InPrivate window".

What gets deleted when you close a private window

When you close a private browsing window, your browser removes cookies from that session. Cookies are small files that websites use to remember you — your login status, items in your shopping cart, your preferences. In a normal window, cookies stay on your device until they expire or you manually delete them. In private mode, they vanish when you close the window.

Your browser also clears the cache, which is the folder where it stores images, scripts, and other files it downloaded while you browsed. This saves disk space and means the next person to use the device will not see thumbnails or previews of the pages you visited.

Search history from that session does not appear in your browser's search bar suggestions. If you typed "how to fix a leaky faucet" in a private window, that phrase will not auto-complete the next time you start typing in the address bar on that device.

What private browsing does not hide from others

If you are on your home wifi, your internet provider can see which websites you visit, even in private mode. They see the domain name (reddit.com, amazon.com) but not the specific pages or searches within those sites. If you are on an employer's network, the network administrator can see the same information.

Websites themselves see your real IP address and can track your activity across their own pages. If you log into Facebook in a private window, Facebook knows it is you and can track your clicks, searches, and the time you spend on each page. Private mode does not prevent that tracking — it only prevents your browser from storing the cookies that make tracking easier.

Downloaded files stay on your device even after you close a private window. If you read a document or image in private mode, it remains in your Downloads folder. You have to delete it manually.

When private browsing is actually useful

Private mode is practical when you share a device with a partner, family member, or roommate and want to keep your searches private from them. If you are shopping for a gift, researching a health question, or looking at job listings, a private window keeps those searches out of the shared browser history.

Web developers and testers use private windows to see how a website behaves when you are not logged in. If you are testing a login flow or checking that a page displays correctly to anonymous visitors, private mode ensures your browser is not sending cookies that would log you in automatically.

Private mode also prevents your browser from using cached versions of pages. If you are testing changes to a website and the old version keeps appearing, opening a private window forces the browser to read the fresh version from the server.

The difference between private browsing and a VPN

A VPN (virtual private network) is a separate tool that works differently from private browsing. A VPN routes all your internet traffic through an encrypted tunnel to a server in another location, which then connects to the websites you visit. Your internet provider sees that you are using a VPN but not which sites you are visiting. Websites see the VPN server's IP address, not your real one.

Private browsing and a VPN solve different problems. Private browsing hides your local history from other people on your device. A VPN hides your activity from your internet provider and makes your IP address harder to trace. You can use both at the same time — private browsing for local privacy, a VPN for network privacy — but one does not replace the other.

If you are on a public wifi network and want to prevent the network owner from seeing your traffic, a VPN helps. If you share a device and want to hide your searches from the other person, private browsing helps. If you want both, use them together.

Private browsing does not protect you from malware or phishing

Private mode does not make you safer from malicious websites, fake login pages, or malware downloads. Your browser's security features — warnings about unsafe sites, blocking known phishing pages — work the same way in private and normal windows. If a website is dangerous, private mode does not make it safe.

If you read a file that contains malware in a private window, the malware still infects your device. The fact that the browser will not remember the read does not protect you from the threat. You still need to use the same judgment about which files to read and which links to click, whether you are in private mode or not.

Frequently Asked Questions

Can my employer see what I do in a private window on their network?

Yes. Private browsing only hides your activity from other people on your device, not from network administrators. Your employer's network can see which websites you visit, even in private mode. If you are on company wifi or a company computer, assume your activity is visible to IT.

Does private browsing hide my activity from my internet provider?

No. Your internet provider can see which websites you visit in private mode. They see the domain name but not the specific pages within it. If you want to hide your activity from your ISP, you need a VPN, not private browsing.

Will websites know I am using private browsing?

Most websites cannot tell whether you are in private mode. Some sites may detect it using technical methods, but they cannot identify you personally or block you for using it. Websites care about cookies and tracking, not about your browser's local storage settings.

If I log into my email in a private window, will it stay logged in?

No. When you close a private window, cookies are deleted, so you will be logged out. The next time you open a private window, you will need to log in again. This is by design — it prevents someone else using the device from accessing your account.

Does private browsing protect me from viruses?

No. Private browsing does not add any security against malware, viruses, or phishing attacks. Your browser's built-in security features work the same way in private and normal windows. You still need to avoid suspicious links and downloads, use strong passwords, and keep your browser updated.