Essential Firefox Privacy Tweaks Mozilla Firefox is a highly flexible web browser for privacy customization. Adjusting its settings can significantly cut down on the amount of data corporate trackers and advertisers collect about your online habits. 1. Upgrade Enhanced Tracking Protection
Firefox has a built-in defense system called Enhanced Tracking Protection (ETP). By default, it is set to Standard, but switching it to Strict provides much stronger defense.
What it does: Blocks social media trackers, cross-site tracking cookies, fingerprinters, and tracking content hidden inside ads or videos across all windows. How to change it:
Click the three-line menu button (hamburger menu) in the top-right corner.
Open Firefox Settings and select Privacy & Security from the left sidebar.
Under Enhanced Tracking Protection, change the selection from Standard to Strict.
Click the Reload All Tabs button if prompted to apply changes.
Note: If a specific trusted website stops loading correctly, you can click the shield icon to the left of your URL address bar and turn off ETP just for that site. 2. Enable Global Privacy Control (GPC)
Firefox has removed the old “Do Not Track” header feature because most websites ignored it. It has been replaced by Global Privacy Control (GPC), which communicates a legally binding opt-out request under certain regional privacy laws. Enhanced Tracking Protection in Firefox for desktop
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