Privacy

Essential Browser Privacy Settings You Should Change Right Now

Your browser's default settings prioritize convenience over privacy. Here's a step-by-step guide to hardening Chrome, Firefox, Safari, and Brave for maximum privacy.

Raimundo Coelho
Raimundo CoelhoCybersecurity Specialist
December 2, 2025
6 min read
Essential Browser Privacy Settings You Should Change Right Now

Why Browser Privacy Settings Matter

Your web browser is the gateway to nearly everything you do online. By default, most browsers are configured to prioritize convenience and compatibility over privacy. This means they allow extensive tracking, store detailed browsing histories, and share information with advertisers — often without you realizing it.

Every website you visit, every search you perform, and every form you fill out generates data that can be collected, aggregated, and sold. Adjusting a few key settings can dramatically reduce the data you leak while browsing — without breaking your experience.

Firefox Privacy Settings

Firefox offers the best built-in privacy controls among mainstream browsers. It is developed by Mozilla, a nonprofit organization, so its business model does not depend on collecting your data.

Essential Changes

  • Enhanced Tracking Protection — Go to Settings > Privacy & Security > Select "Strict" mode. This blocks social media trackers, cross-site cookies, fingerprinting, and cryptominers. The "Strict" setting may occasionally break a site, but you can add exceptions for individual domains
  • DNS over HTTPS — Enable in Settings > Privacy & Security > scroll to DNS over HTTPS. Choose Cloudflare or NextDNS. This encrypts your DNS queries so your ISP cannot see which websites you visit
  • Search engine — Switch default to DuckDuckGo (Settings > Search). DuckDuckGo does not profile you or personalize results based on your search history
  • Cookies — Set to "Delete cookies and site data when Firefox is closed." This prevents persistent tracking between browsing sessions
  • Permissions — Review camera, microphone, location, and notification permissions regularly. Revoke access for any site that does not need it
  • uBlock Origin (ad and tracker blocking — the most effective content blocker available)
  • Privacy Badger (automatic tracker detection and blocking by the EFF)
  • ClearURLs (removes tracking parameters from URLs before you visit them)

Firefox Containers

Firefox offers a unique feature called Multi-Account Containers that isolates websites into separate "containers." This means cookies from Facebook stay in the Facebook container and cannot track you on other sites. Install the Facebook Container extension to automatically isolate Facebook and Instagram tracking.

Chrome Privacy Settings

Chrome is made by Google, an advertising company, so it requires more aggressive configuration for privacy.

Essential Changes

  • Third-party cookies — Settings > Privacy and Security > Cookies > Block third-party cookies. This is the single most impactful change in Chrome
  • Safe Browsing — Keep "Enhanced protection" enabled for real-time protection against phishing and malware
  • Do Not Track — Enable the "Send a Do Not Track request." While not all websites honor this, it signals your privacy preference
  • Site Settings — Review permissions for location, camera, microphone, and notifications. Set the default to "Ask before accessing" for each
  • Clear browsing data — Set up automatic clearing on exit by going to Settings > Privacy and Security > Clear browsing data > On exit

Important Note

Even with optimal settings, Chrome still sends significant data to Google, including browsing history if you are signed in with a Google account. For serious privacy, consider switching to Firefox or Brave. If you must use Chrome, sign out of your Google account while browsing or use a separate browser profile.

Safari Privacy Settings

Safari has strong privacy defaults on Mac and iOS, making it a solid choice for Apple users.

Essential Changes

  • Intelligent Tracking Prevention — Enabled by default. Verify in Preferences > Privacy. This uses machine learning to identify and block trackers
  • Hide IP address — Enable "Hide IP address from trackers" to prevent advertising networks from using your IP for tracking
  • Fraudulent site warnings — Keep enabled to receive alerts when visiting known phishing sites
  • Cross-site tracking — Ensure "Prevent cross-site tracking" is checked
  • Privacy Report — Click the shield icon in the address bar to see how many trackers Safari blocked on each site. Review this regularly to understand which sites track you the most

Safari Limitations

While Safari offers good default privacy, it lacks the extension ecosystem of Firefox. Features like container tabs and advanced content blocking are limited compared to other browsers.

Brave Browser

Brave is built specifically for privacy with aggressive defaults that block tracking out of the box.

Key Features (Already Enabled)

  • Blocks ads and trackers by default — no extensions needed
  • Fingerprinting protection built-in to prevent device identification
  • HTTPS-only mode ensures encrypted connections
  • Built-in Tor windows for anonymous browsing when maximum privacy is needed

Worth Adjusting

  • Search engine — Switch from Brave Search to DuckDuckGo if preferred
  • Social media blocking — Settings > Social media blocking > Block all. This prevents embedded social media widgets from tracking you across sites
  • Shields settings — Click the lion icon in the address bar to customize protection levels per site

Universal Tips for All Browsers

Regardless of which browser you use, these practices apply:

  • Keep your browser updated — Security patches are critical. Enable automatic updates and restart your browser when prompted
  • Minimize extensions — Each extension increases your attack surface and can potentially access your browsing data. Only install extensions from verified developers
  • Use private/incognito mode for sensitive browsing — but understand it only prevents local history storage, not tracking by websites or your ISP
  • Clear cookies regularly or use containers to isolate sites. Consider using our metadata remover before uploading images that may contain location data
  • Check URLs carefully — Watch for tracking parameters before clicking, and use ClearURLs or manually strip UTM parameters
  • Use separate browsers for different purposes — one for everyday browsing, another for banking and sensitive accounts. This prevents cross-contamination of tracking data
  • Review saved passwords — Use a strong password generator to replace any weak or reused passwords stored in your browser

Small changes to your browser settings create a significantly more private browsing experience without sacrificing usability. Spend fifteen minutes configuring your browser today and you reclaim control over your digital footprint.

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Raimundo Coelho
Written by

Raimundo Coelho

Cybersecurity specialist and technology professor with over 20 years of experience in IT. Graduated from Universidade Estácio de Sá. Writing practical guides to help you protect your data and stay safe in the digital world.

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