Which browser is actually the most private?

"Private" covers three different things that get muddled: whether the browser stores your history locally, whether it lets sites track you across the web, and whether the browser maker itself collects data about you. A browser can be excellent at one and poor at another, which is why the question needs unpicking before it can be answered.

Step by step

1. Separate the three questions.Local privacy — what is stored on the device, which private browsing handles. Cross-site tracking — whether third parties can follow you between sites, which is the important one. And what the browser vendor collects about you, which varies by company and by settings.
2. Judge by default settings, not by reputation.Most people never change a setting, so what the browser does out of the box is what it does. Firefox and Safari block third-party cookies and known trackers by default; Chrome does not block third-party cookies by default in the same way.
3. Understand fingerprinting.Even with cookies blocked, sites can identify a browser by its combination of fonts, screen size, language, extensions and hardware. Safari, Firefox and Brave all take active measures against this; blocking cookies alone does not.
4. Add a content blocker whatever you use.A reputable blocker is the single largest improvement available and it works on most browsers. It reduces tracking, speeds up pages and blocks a share of malicious advertising.
5. Change the default search engine if search history matters to you.The search engine sees your queries regardless of which browser you use. This is a separate choice from the browser and often the more consequential one.
6. Turn off the sync and telemetry you do not want.Every browser offers to sync history and passwords to an account and to send usage data back. Both are settings. Decide deliberately rather than accepting the setup screen.
7. Accept the compatibility trade-off honestly.Aggressive blocking breaks some sites — bank logins, video players, embedded checkouts. Every browser lets you disable protection per site. Knowing where that switch is prevents most of the frustration.
8. Do not expect a browser to hide you from a site you sign in to.Once you log in, the site knows who you are regardless of the browser. No browser setting changes that, and no VPN does either.

Alternatives

• Firefox: Independent, strong tracking protection on by default, good fingerprinting defences, and extensive configuration. Occasional site compatibility problems, and a smaller share means some sites test it less.
• Safari: Strong tracking prevention by default and good fingerprinting resistance, with excellent efficiency on Apple hardware. Only available on Apple platforms, which limits it if you use Windows or Android too.
• Brave: Blocks trackers and adverts aggressively out of the box, built on the same engine as Chrome so compatibility is good. Ships with cryptocurrency and rewards features many people simply turn off.
• Chrome: Fast, compatible with everything, and strong on security patching. Made by an advertising company, weakest of these on default tracking protection, and the sync account ties activity to your Google identity.
• Edge: Good security and useful built-in tools, with tracking prevention that can be set to strict. Made by a company with an advertising business, and ships with a lot of promotional features to turn off.
• Tor Browser: The strongest anonymity available to an ordinary user, at the cost of speed and of many sites refusing to work. The right tool for genuine anonymity needs, wrong for everyday browsing.

Questions people ask