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- Storage API - some website want to add files to my computer
- Storage API - some website want to add files to my computer Redirect 1
- Streaks, smeared lines or blurry web pages while scrolling on Firefox
- Submit a SUMO knowledge base content request
- Subscribe and install Firefox Private Network Device-level protection
- Subscribe and install Mozilla VPN
- Subscribe to Firefox Relay Premium
- Subscribe to Hubs
- Subscribe to RSS feeds with Firefox for Android
- Suggestion Box
- SUMO Community Participation Guidelines
- SUMO Living Localization Guide
- SUMO - Managing account data
- Superheroes wanted
- Superheroes Wanted!
- Support Document Guide
- Supported platforms and system requirements
- Support for Hello discontinued in Firefox 49
- Support forum - Find support answers
- Support forum - Find support questions
- Support forum - How to escalate
- Support forum - How to follow up
- Support forum - Offtopic and duplicate questions
- Support forum - Post replies
- Surf and watch videos from Firefox for Fire TV
- Surf and watch videos in Firefox for Fire TV
- Surf and watch videos on Firefox for Fire TV
- Suspicious activity on my Firefox account
- Suspicious activity on my Mozilla account
- Switch back to Mozilla Monitor’s free plan
- Switch from Chrome to Firefox
- Switch from POP to IMAP account
- Switching between Multiple Email Acccounts
- Switching between Multiple Email Accounts
- Switching Devices
- 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 home - Explore
- Sync home for mobile - Common Questions
- Sync home - IA Nav
- Sync home - Quick
- Sync logins in Firefox desktop
- Sync logins in Firefox for Android
- Sync logins in Firefox for iOS
- Sync your bookmarks, tabs and history on iOS
- Sync your bookmarks, tabs and history on your mobile devices
- 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
- Sync your Firefox bookmarks, open tabs and browsing history in iOS
- Sync your Firefox browsing history in iOS
- Tabbed browsing
- Tab context menu
- Tab context menu - close multiple tabs
- Tab context menu in Firefox - close multiple tabs
- Tab Groups feature discontinued
- Tables - Format messages with rows and columns
- Tab Mix Plus is incompatible with FF 17 - Use the development build as a workaround
- Tab Mix Plus is incompatible with Firefox 17 - update it to fix the issue
- Tab Mix Plus is incompatible with Firefox 17 - Use the development build as a workaround
- Tab overview menu
- Tab preferences and settings
- Tabs and General Options
- Tab Scroll Quickly
- Tagging in Pocket for Android
- Tagging in Pocket for iOS
- Tagging in Pocket on your computer
- Take screenshots
- Take screenshots in Firefox
- Take screenshots on Firefox
- Take screenshots on Firefox OS
- Take screenshots Redirect 1
- Taking a Screenshot on Firefox OS
- Taking Photos
- Taking Photos on Firefox OS
- Task Manager - see what tabs or extensions are slowing down Firefox
- Task Manager - see whether tabs or extensions are slowing down Firefox
- Technical writing program
- Technical writing program - How to write Knowledge Base articles
- Telemetry collection and deletion
- Telemetry Collection & Deletion
- Telemetry collection - Windows default browser trends
- Telemetry collection- Windows default browser trends
- Telemetry collection: Windows default browser trends
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