How to
- Share a webpage through Firefox Services
- Share a webpage through Firefox Share
- Share bookmarks, tabs and more with your other computers
- Share browser windows or your screen with sites you trust
- Share content from Firefox for Android Beta
- Share content from Firefox Preview
- Share data with Mozilla to help improve Firefox
- Share files using Bluetooth
- Share from Pocket for Android
- Share music, videos and photos
- Share music, videos and photos from the browser
- Share music, videos and photos from the Firefox OS browser
- Share pages with Firefox from other browsers
- Share telemetry data with Mozilla to help improve Firefox
- Share your Android device with a Firefox Guest Session
- Share your Internet connection
- Sharing from Pocket for Android
- Sharing from Pocket for iOS
- Sharing from Pocket on your computer
- Sharing your Firefox OS internet connection over USB
- Shop online with more confidence using Firefox Review Checker
- Signatures
- Signing in using Persona
- Signing out using Persona
- Sign in to a Mozilla account using 3rd-party authentication
- Sign in to Firefox Accounts on Fire TV
- Sign in to Firefox accounts using 3rd-party authentication
- Sign in to Mozilla accounts using 3rd-party authentication
- Sign in to Pocket with your Mozilla account
- Sign in to your Mozilla account on Fire TV
- Sign up for Pocket with your Firefox account
- Sign up for Pocket with your Mozilla account
- Silence incoming phone calls
- Silence incoming smartphone calls
- Site Identity Button
- Site Information panel
- Site Permission Add-ons
- Site Permissions panel
- Sites on the New Tab page
- Slow down Firefox for Android's scroll speed
- Slow down scroll speed
- SmartBlock for Enhanced Tracking Protection
- Smart Bookmarks folders
- Smart keywords
- Solve math calculations directly in your Firefox address bar
- Sorting bookmarks
- Sort your bookmarks to quickly find the ones you want
- Splash Accounts - Managing Account Data
- Splash - Managing Account Data
- Split tunneling - use Mozilla VPN with specific Android apps
- Split tunneling - use VPN with specific Android apps
- Sponsored shortcuts on the New Tab page
- Sponsored tiles on the New Tab page
- Sponsored Top Sites
- Sponsors on the home and new tab page
- Sponsors on the home page and New Tab page
- SSLv3 error messages on Firefox
- Standalone address book
- Startup, home page and download settings
- Startup, home page, tabs, and download settings
- Stop receiving forwarded emails sent to your masks on Firefox Relay
- Stop receiving forwarded emails sent to your masks with Firefox Relay
- Storage API - some websites want to add files to my computer
- Storage API - some website want to add files to my computer
- Storage API - some website want to add files to my computer Redirect 1
- Subscribe and install Firefox Private Network Device-level protection
- Subscribe and install Mozilla VPN
- Subscribe to Firefox Relay Premium
- Subscribe to RSS feeds with Firefox for Android
- SUMO - Managing account data
- Supported platforms and system requirements
- Support for Hello discontinued in Firefox 49
- Surf and watch videos on Firefox for Fire TV
- Switch back to Mozilla Monitor’s free plan
- Switch from Chrome to Firefox
- Switch from POP to IMAP account
- Switching between Multiple Email Accounts
- Switching from Chrome to Firefox
- Switching the folder pane view
- Switching to Firefox Extended Support Release (ESR) for personal use
- Switching to Thunderbird
- Switching to Thunderbird from Windows or Web-Based Email Applications
- Switch or quit apps
- Switch or quit apps on Firefox OS
- Switch to another language on Firefox Reality
- Switch to a secure email provider
- Switch to a secure email provider on Firefox OS
- Switch to desktop view on Firefox Focus for Android
- Switch to Firefox Extended Support Release (ESR) for personal use
- Sync bookmarks, logins and browsing history on Firefox for iOS
- Sync bookmarks, tabs, history and passwords on Android
- Sync custom preferences
- Sync Firefox data
- Sync logins in Firefox desktop
- Sync logins in Firefox for Android
- Sync logins in Firefox for iOS
- Sync your Firefox bookmaks and browsing history in iOS
- Sync your Firefox bookmarks and browsing history in iOS
- Sync your Firefox bookmarks and browsing history in iOS Redirect 1
- Sync your Firefox bookmarks, history, passwords and more