Manage preferences and add-ons
Make Firefox yours through customization settings and add-ons
- Import settings from other browsers Learn how to import or export your information between Firefox and another browser
- Video, audio and interactive settings Change how Firefox handles videos, animations, music and other interactive content
- Display and appearance Learn how to change your toolbar, font sizes and browser colors
- Manage add-ons Enhance Firefox's functionality and appearance with add-ons
In English
- Make Firefox your default browser
- Search the Web on Firefox
- Back up and restore information in Firefox profiles
- Firefox options, preferences and settings
- Does Firefox share my location with websites?
- Multi-Account Containers
- Recovering important data from an old profile
- Connection settings in Firefox
- Configuration Editor for Firefox
- Firefox's performance settings
- An extension changed my home page
- Permission request messages for Firefox extensions
- Feed reader replacements for Firefox
- Frequently asked questions - Firefox add-on technology is modernizing
- Adobe Flash protected mode in Firefox
- Reporting extensions and themes for abuse
- Hide or display content in New Tab
- Changes affecting Adobe Flash on Firefox for Mac
- How to use collections on addons.mozilla.org
- Block and unblock websites with parental controls on Firefox
- Pop-up blocker settings, exceptions and troubleshooting
- Restore previous session - Configure when Firefox shows your most recent tabs and windows
- How do I use the Firefox spell checker?
- View PDF files in Firefox
- How to set the home page
- Change the program used to open email links
- How to disable the built-in PDF viewer and use another viewer
- Share data with Mozilla to help improve Firefox
- Change what Firefox does when you click on or download a file
- How do I restore my tabs from last time?
- Use the Firefox Sidebar to access bookmarks, history and synced tabs
- Choose display languages for multilingual web pages
- Change your default search settings in Firefox
- Use the Firefox interface in other languages with language packs
- How to change your default browser in Windows 10
- Allow Firefox to load multiple tabs in the background
- Tips for assessing the safety of an extension
- Access hidden tabs in Firefox
- Tab preferences and settings
- Manage local site storage settings
- Task Manager - see what tabs or extensions are slowing down Firefox
- Disable high contrast mode in Firefox
- Assign shortcuts to search engines
- Add or remove a search engine in Firefox