When you launch Safari on your Mac, it defaults to opening a standard browser window. This standard mode permanently saves your browsing history, tracks the cookies placed by advertisers, and keeps you logged into your accounts even after you close the app. If you use a shared family computer or simply value strict privacy, you might find yourself constantly clicking “File > New Private Window” every single time you open the browser.
Instead of relying on your memory to manually switch modes, you can configure Safari to launch directly into Private Browsing mode the moment you click the icon in your dock. This ensures that your browsing history and session data are never recorded, providing a consistent, privacy-focused experience from the very first click.
Changing the Default Safari Startup Behaviour
You can force Safari to launch privately by adjusting a single setting within the browser’s main preferences menu.
- Open the Safari web browser on your Mac.
- Look at the menu bar at the absolute top-left of your screen and click on the word Safari.
- Select Settings… from the dropdown menu (or press the Command + , keyboard shortcut).
- The Settings window will open. Ensure you are on the General tab (the first icon at the top of the window).
- Look for the second dropdown menu on the page, labelled Safari opens with.
- Click the dropdown menu (which is usually set to “A new window”) and change it to A new private window.
- Close the Settings window by clicking the red traffic light button in the top left corner.
You do not need to restart your computer. The very next time you completely quit Safari (Command + Q) and reopen it, it will immediately launch with the dark search bar and the prominent “Private Browsing Enabled” banner, confirming that your session is not being recorded.