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This article gives an overview of the Firefox Settings panels and the different options you can adjust. At the top right of your screen, click the menu button 
and select . The following panels are available:
General
This panel contains the following types of settings:
General
Startup, Import Browser Data and Tabs: Here you can make Firefox your default browser, set Firefox to restore your previous session at startup, import data from another browser and choose how tabs are opened.
Language and Appearance
Website appearance, Colors, Fonts, Zoom and Language: Here you can change website appearance settings in Firefox, change the fonts and colors websites use, change the size of webpage content, choose the language to display menus, notifications, messages and other parts of the Firefox interface, choose a preferred display language for web pages, and choose to use the Firefox spell checker.
Files and Applications
Downloads, Applications and Digital Rights Management (DRM) Content: Here you can change the download folder Firefox uses to save files, change the application used or the action taken for different file types, and choose whether to watch DRM content in Firefox.
Firefox Updates
Here you can check your update history or change update settings for Firefox.
Performance
Here you can customize performance settings in Firefox.
Browsing
Here you can choose settings for scrolling, using the cursor (Caret Browsing mode) or searching for text in webpages.
Network Settings
Here you can change Firefox connection settings and set a proxy to connect to the Internet.
Home
This panel contains the following types of settings:
New Windows and Tabs
Here you can choose what you see when you open your home page, a new Firefox window or a new tab. You can set your home page or new windows to the default Firefox home page, a blank page or a custom URL. You can set new tabs to open the default Firefox home page or a blank page.
Firefox Home Content
Here you can hide or display content on the default Firefox home page or New Tab page including Web Search, shortcuts to most visited sites, recommended stories and recent activity. For more information about these features, see Customize items on your Firefox New Tab page.
Search
This panel contains settings related to the search engine Firefox uses by default, address bar settings and other search settings. For more information, see Change your default search settings in Firefox.
Privacy & Security
This panel contains the following types of settings:
Browser Privacy
Enhanced Tracking Protection, Website Privacy Preferences, Cookies and Site Data, Passwords,Logins & Passwords, Autofill,Forms & Autofill, and History: and Address Bar: Here you can control settings for the Firefox Enhanced Tracking Protection and Do Not Track features, control whether websites can sell or share your data, manage website cookies, website data storage and cached web content, set how to manage passwords, how to fill in forms, and how to manage your browsing, download, search and form history and set how the address bar works.
Permissions
Here you can decide whether websites are allowed to send you Web Push notifications, show you pop-up windows and whether Firefox should warn you when websites try to install add-ons.
Firefox Data Collection and Use
Here you can decide whether you allow Firefox to send technical and interactive data to Mozilla, install and run studies, or send crash reports to Mozilla.
Website Advertising Preferences
Here you can allow or disallow websites to perform privacy-preserving ad measurement.
Security
Deceptive Content and Dangerous Software Protection, Certificates and HTTPS-Only Mode: Here you can view and manage website certificates and security devices, block dangerous content or downloads, and enable or disable HTTPS-Only Mode in Firefox.
Sync
In this panel you can set up or manage a Mozilla account, which is needed to access certain Mozilla services, including Sync. For more information, see How do I set up Sync on my computer? and How do I choose what information to sync on Firefox?
Firefox Labs
In this panel you can try experimental Firefox features, before they are released. For more information, see the Firefox Labs - Explore experimental features in Firefox article and Experimental features in Firefox at MDN Web Docs.
More from Mozilla
This panel informs you about other Mozilla products that work to support a healthy internet (Firefox Mobile, Mozilla Monitor, Mozilla VPN, Firefox Relay).
