Choosing the best privacy browser comes down to your threat level: Firefox in Strict mode suits casual users, Brave blocks trackers out of the box, Mullvad Browser leans hardest on anti-fingerprinting, and Tor Browser is the choice for anonymity.
The deciding question is which protections are already active and which you must switch on yourself. The same lens helps with other software decisions, from how to choose a how to choose a password manager question to picking the best free photo editing app.
Decision criteria for a privacy browser
A privacy browser is best judged on what it does without your involvement. Work through these checks in order, because each one narrows the field for the next.
- Default blocking. Settings that need a manual change are skipped by many people, so what is active on first launch decides real-world protection.
- Cookie handling. Look for blocking of cross-site (third-party) cookies, isolation between sites, or automatic deletion. Venn’s guide to secure browsers describes fine-grained tools to block, isolate or auto-delete cookies as a hallmark of a privacy-focused browser.
- Fingerprinting defences. Fingerprint protection aims to stop websites identifying a device from characteristics such as screen resolution and fonts, according to the same Venn guide.
- Room for extensions. Some browsers ship with content blockers, some work best unmodified, and some restrict older extensions.
- Compatibility and search. A browser you abandon because sites break protects nobody, and the default search engine is a separate privacy decision.
- Privacy versus anonymity. These are different goals, and only one browser in this comparison is built for the second.
Side-by-side comparison of defaults
The table separates what each browser does without configuration from what the reader must do. It covers the browsers that Privacy Guides and Venn describe, in terms of their documented behaviour.
| Browser | Active by default | Needs action from you | Suits |
|---|---|---|---|
| Firefox | Total Cookie Protection and Enhanced Tracking Protection; open source and independent of Chromium | Select Strict Enhanced Tracking Protection to block social media trackers, fingerprinting scripts and cross-site cookies | Casual users who want a mainstream browser |
| Brave | Blocks ads, trackers and cross-site cookies and upgrades connections to HTTPS, with no extra extensions | Little for baseline protection | People who want protection without setup and Chromium compatibility |
| Mullvad Browser | Anti-fingerprinting protections, uBlock Origin and NoScript pre-installed, permanent private browsing mode | Avoid modifying it beyond its default security levels | People focused on strong privacy and fingerprinting resistance |
| Tor Browser | Routes web traffic through an encrypted volunteer network of relays | Use it specifically when anonymity is the goal | Anonymous browsing |
Figures and behaviours here come from Privacy Guides’ desktop browser recommendations and Venn’s secure browser overview.
Brave’s row also applies to Vivaldi, which Venn groups with it for default blocking. Firefox is the only mainstream option in the table where a visible settings change separates basic from stronger protection.
Browser verdicts
Firefox
Firefox suits casual users who want an open-source browser independent of Chromium, which is how Privacy Guides positions it. It offers Total Cookie Protection and granular Enhanced Tracking Protection, per Venn.
Choose Strict mode if you want the stronger setting. Privacy Guides notes that Strict does not block every tracking avenue, because it is designed to have minimal to no impact on site usability. That makes it a sensible compromise, not a guarantee.
Brave
Brave is the answer to the question of which browsers block trackers by default, alongside Vivaldi. Venn says both block ads, trackers and cross-site cookies automatically and upgrade connections to HTTPS without extensions.
Privacy Guides recommends Brave for people who need Chromium compatibility. If your sites or workflow depend on how Chromium-based browsers behave, Brave gives you default blocking without leaving that engine.
Mullvad Browser
Mullvad Browser is Privacy Guides’ pick if you are focused on strong privacy and anti-fingerprinting out of the box. It operates in permanent private browsing mode and clears cookies on close, so it trades convenience for protection.
It is meant to be used as shipped. Privacy Guides advises against modifying it beyond adjusting its default security levels, which is why adding more extensions to it is a poor idea.
Tor Browser
Tor Browser routes web traffic through an encrypted network of volunteer relays. Privacy Guides states that anyone who needs to browse the internet anonymously should use Tor instead of a desktop browser from the other categories.
It fits situations where anonymity outweighs everyday convenience. For routine browsing with fewer trackers, the other browsers in this comparison are the more practical fit.
Chrome
The clearest Chrome-specific concern in the evidence is extension support. Google Chrome began disabling extensions not updated for Manifest V3 from February 26, 2025, as this uBlock Origin write-up reports.
Chrome is therefore a weaker base for an extension-led privacy setup. If you keep it, expect to rely on whichever blockers remain supported rather than the full original tools.
Cookies and fingerprinting in practice
Cookie protection differs by browser in method, not just strength. Firefox pairs Total Cookie Protection with Strict mode’s blocking of cross-site cookies, while Brave blocks cross-site cookies by default and Mullvad Browser clears cookies when it closes.
Firefox can also delete cookies and site data when it is closed, but this is an optional setting. Turn it on if you rarely rely on staying signed in, and leave it off if repeated logins would push you back to a less private browser.
On fingerprinting, Firefox Strict blocks fingerprinting scripts, and Mullvad Browser provides protections against naive fingerprinting scripts out of the box, similar to other private browsers. Mullvad is the stronger recommendation here because Privacy Guides names it specifically for anti-fingerprinting.
Extensions worth adding
The best browser extensions for privacy are few, and the browser you choose decides whether you need any. Brave and Vivaldi block ads and trackers without extra extensions, and Mullvad Browser already comes with uBlock Origin and NoScript pre-installed.
Firefox is where an added blocker earns its place, since Strict mode leaves some tracking avenues open. Venn names uBlock Origin and Bitdefender TrafficLight as extensions that can enhance browser security. Content blockers are compared further in the guide to the best ad blocker.
On Chrome, the choice is narrower. The uBlock Origin write-up says uBlock Origin Lite is not as powerful as the original uBlock Origin, so Chrome users get a reduced version of the most recommended blocker.
Privacy extensions are worth installing when the browser lacks default blocking, and not worth stacking on a browser that already bundles them. Adding more to Mullvad Browser goes against its design.
Search engine defaults
A privacy browser can still leak what you type if its search settings are careless. In Firefox, search suggestions send everything you type in the address bar to the default search engine, according to Privacy Guides.
Treat the default search engine as its own choice, separate from the browser. Review it in the browser’s search options, and switch suggestions off if you do not want partial queries sent as you type.
Changing privacy settings in your current browser
If you stay with Firefox, a few settings changes capture most of the benefit. Follow these steps in order.
- Open Privacy and Security. Find the privacy section of the browser settings.
- Select Strict. Choose Strict Enhanced Tracking Protection, as Privacy Guides describes.
- Decide on cookie deletion. Tick the option to delete cookies and site data when Firefox is closed if you do not need persistent logins.
- Turn off search suggestions. This stops typed address-bar text from reaching the default search engine.
For other browsers, look for cookie and tracker controls in the same privacy area, since privacy-oriented browsers typically let you block, isolate or auto-delete cookies. For Mullvad Browser, leave settings alone apart from its security levels.
Frequently asked questions
| Question | Answer |
|---|---|
| Does Mullvad Browser require Mullvad’s VPN? | No. Privacy Guides says the browser does not require the use of Mullvad’s VPN for its protections. |
| Can a browser other than Tor make me anonymous? | Privacy Guides says all browsers other than Tor Browser will be traceable by somebody in some manner or another, so use Tor for anonymity. |
| Is Ghostery free? | Yes. Ghostery is an open-source extension described as free to use, according to the uBlock Origin write-up. |
