Download Firefox Systems and Languages What's New Privacy Give Firefox a tune up Refresh Firefox How does it work? Download a fresh copy Customize settings and preferences Make Firefox yours through customization settings and add-ons ទាំងអស់ All articles and threads Import settings from other browsers Video, audio and interactive settings Display and appearance Manage add-ons In English Add-on Badges Firefox options, preferences and settings Does Firefox share my location with websites? Manage local site storage settings Make Firefox your default browser Connection settings in Firefox Personalized extension recommendations Firefox's performance settings Open Firefox automatically when you start your computer Global Privacy Control Pop-up blocker settings, exceptions and troubleshooting Tips for assessing the safety of an extension Use the Firefox Sidebar to access bookmarks, history and synced tabs Restore previous session - Configure when Firefox shows your most recent tabs and windows How do I restore my tabs from last time? How to change your default browser to Firefox on Windows How to set the home page Recommendations from Firefox View PDF files in Firefox or choose another viewer Automatically fill in credit card and payment method data on Web forms Recovering important data from an old profile An extension changed my New Tab page or home page Use Firefox in another language Back up and restore information in Firefox profiles Control audio or video playback with your keyboard Change your default search settings in Firefox Access hidden tabs in Firefox Assign shortcuts to search engines Change the program used to open email links Search with the Firefox address bar Configuring Networks to Disable DNS over HTTPS Cannot remove an add-on (extension or theme) How do I use the Firefox spell checker? Add or remove a search engine in Firefox Customize your New Tab page to hide or display content Choose display languages for multilingual web pages Importing Safari data into Firefox Block and unblock websites with parental controls on Firefox Share data with Mozilla to help improve Firefox Manage extension shortcuts in Firefox End of support for Adobe Flash How to use collections on addons.mozilla.org Closing multiple Tabs - option to disable warning How to disable the built-in PDF viewer and use another viewer Feed reader replacements for Firefox Disable high contrast mode in Firefox Firefox Notes status Mozilla Voice Server Proxy Retiring