Editing My Firefox Settings (section)

=== Custom GUI Settings ===
Navigate to the standard Firefox Settings (<code>about:preferences</code>) to adjust the following:

'''General'''
* '''Tabs:''' Enable ''Open links in tabs instead of new windows''. Disable ''Show an image preview when you hover on a tab'' and disable ''Enable link previews''.
* '''Fonts:''' Uncheck ''Allow pages to choose their own fonts, instead of your selections above''.
* '''Language:''' Set to English (US). Enable ''Request English versions of web pages for enhanced privacy''. Disable ''Enable full page translations''.
* '''Typing:''' Disable ''Check your spelling as you type''.
* '''Browsing & Media:''' Disable ''Enable picture-in-picture video controls'' and ''Control media via keyboard, headset, or virtual interface''.

'''Home'''
* '''New Windows and Tabs:''' Set both ''Homepage and new windows'' and ''New tabs'' to '''Blank Page'''.

'''Search'''
* '''Default Search Engine:''' Switch to a privacy-respecting alternative like <code>lite.duckduckgo.com</code>, or your own self-hosted '''SearXNG''' or '''4get''' instance.
* '''Search Suggestions:''' Disable ''Show search suggestions''.

'''Privacy & Security'''
* '''Tracking Protection:''' Set Enhanced Tracking Protection to '''Strict''' (disable ''Fix major site issues'' if opting for absolute strictness without exceptions).
* '''Global Privacy Control:''' Enable ''Tell websites not to sell or share my data''.
** ''Note:'' You can also explicitly enable the Do Not Track header by setting <code>privacy.donottrackheader.enabled</code> to <code>true</code> via the hidden <code>about:config</code> entry.
* '''Cookies and Site Data:''' Enable ''Delete cookies and site data when Firefox is closed''.
* '''Logins and Passwords:''' Disable saving passwords, payments, and addresses.
* '''History:''' Set to ''Use custom settings for history'' and enable ''Clear history when Firefox closes''.
* '''Permissions:''' Disallow all requests (Location, Camera, Microphone, Notifications, etc.). Enable ''Block pop-up windows'' and ''Warn you when websites try to install add-ons''.
* '''Data Collection and Use:''' Disallow/uncheck all telemetry and data collection options.
* '''Security:''' Enable ''HTTPS-Only Mode in all windows''.
* '''DNS over HTTPS:''' Set to '''Max Protection''' and select a privacy-friendly provider.