How to
- Customize items on your Firefox New Tab page
- Customize navigation buttons like back, home, bookmarks and reload
- Customize Shortcuts on your New Tab page
- Customize sound and vibration settings on Firefox OS
- Customize the Firefox Homepage
- Customize the Firefox home screen
- Customize the New Tab page
- Customize your Firefox app icon on iOS
- Customize your Firefox Home content
- Customize your Firefox New Tab page
- Customize your New Tab page
- Customize your New Tab page to hide or display content
- Customize your reading experience in Pocket Premium
- Customize your wallpapers
- Customizing Firefox
- Customizing Firefox on MacOS using configuration profiles
- Customizing Firefox Using AutoConfig
- Customizing Firefox Using Group Policy
- Customizing Firefox Using Group Policy (Windows)
- Customizing Firefox Using policies.json
- Customizing Firefox with add-ons
- Customizing the Start Page
- Customizing your reading experience in Pocket Premium
- Customizing your reading settings in Pocket
- Dangerous directories
- Data broker scan
- Data Loss Prevention
- Debugging Firefox Private Network VPN
- Debugging Mozilla VPN
- Debugging policy issues
- Deceased or incapacitated account management FAQ
- Dedicated profiles per Firefox installation
- Delete an email mask
- Delete an individual tab in Firefox Focus for Android
- Delete an individual tab in Firefox Klar for Android
- Delete bookmark folders in Firefox for Android
- Delete browsing, search and download history
- Delete browsing, search and download history on Firefox
- Delete cookies to remove the information websites have stored on your computer
- Delete recent browsing, search and download history
- Delete sync data from Firefox by signing out of Firefox Accounts
- Delete sync data from Firefox by signing out of your Mozilla account
- Delete Your Contacts On Firefox OS
- Deleting Bookmarks
- Deleting cookies
- Deleting email messages in Firefox OS
- Deleting email messages on Firefox OS
- Deleting Messages
- Deploy Firefox customizations on macOS
- Deploy Firefox on macOS using PKG and Jamf
- Deploy Firefox on Windows
- Deploy Firefox with extensions
- Deploy Firefox with language packs
- Deploy Firefox with MSI installers
- Deploying Firefox Customizations on macOS
- Deploying Firefox on MacOS using PKG and Jamf
- Deploying Firefox on Windows
- Deploying Firefox with extensions
- Deploying Firefox with Language Packs
- Different ways to access PDF files with Firefox
- Digitally Signing and Encrypting Messages
- Disable credit card and payment method syncing across devices
- Disable credit card syncing across devices
- Disable/delete an email alias on Firefox Relay
- Disable/delete an email mask on Firefox Relay
- Disable email forwarding - Stop receiving emails sent through your masks
- Disable email forwarding - Stop receiving emails sent to your aliases
- Disable email forwarding - Stop receiving emails sent to your masks
- Disable Firefox Sync
- Disable Mozilla VPN protection for a specific website
- Disable or re-enable Pocket for Firefox
- Disable or remove Add-ons
- Disable password saving in Firefox
- Disable Pocket for Firefox
- Disable Pocket in Firefox
- Disable Pocket on Firefox
- Disable third-party cookies in Firefox to stop some types of tracking by advertisers
- Disable VPN protection for a specific website
- Disabling the included version of Pocket and toolbar button
- Disabling third party cookies
- Disconnect your Firefox Account from Fire TV
- Disconnect your Firefox Account from Lockwise
- Disconnect your Mozilla account from Fire TV
- Disconnect your Mozilla account from Lockwise
- Discontinuing the Tab Groups feature
- Discourse - Managing account data
- Discover page FAQ
- Display the Firefox button menu instead of the menu toolbar
- Display the Thunderbird button menu instead of the menu toolbar
- DNS over HTTPS (DoH) FAQs
- DNS-over-HTTPS (DoH) FAQs
- DNS-over-HTTPS FAQ
- Does Firefox Private Network work on other browsers?
- Does Firefox share my location with websites?
- Does Firefox share my location with Web sites?
- Does Firefox work on Windows 8 and Windows RT
- Does Firefox work on Windows 8 and Windows RT?
- Does Firefox work on Windows 8/RT?
- Does the Firefox Private Network extension work on other browsers?
- Do I have a Mozilla VPN subscription?