Settings

Manage and customize your product experience with settings, add-ons, and more.

Add-on Badges

You’ll know if an extension is being regularly reviewed if it has one of the badges listed in this article.

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Firefox Page Info window

The Firefox “Page Info” window gives you details about the page you're on. You can also use it to change permissions for the website.

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Manage local site storage settings

Learn about local storage, how to access storage settings, remove site data or set exceptions for websites to store data in Firefox.

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Connection settings in Firefox

Your organization or Internet Service Provider may offer or require you to use a proxy to connect to the Internet. Learn more.

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Firefox translation for Android

The built-in translation feature allows you to seamlessly browse the web in your preferred language. Learn more.

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Firefox's performance settings

Firefox automatically uses settings that work best with your computer. You can always change these settings.

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Restore the Menu bar in Firefox

The Firefox Menu bar (File, Edit, View, History, Bookmarks, etc.) may be hidden or missing. Learn how to restore the Menu bar.

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Multi-Account Containers

Add Container tabs to Firefox with the Multi-Account Containers add-on, to separate your work and personal browsing.

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Global Privacy Control

How to make Firefox advise websites that you visit not to sell or share your browsing information.

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Export your Thunderbird Profile

Thunderbird's export tool lets you create a backup of your Thunderbird profile including accounts, messages, address books, and settings.

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Compacting folders

This article explains how Thunderbird stores messages on a disk drive and why it is necessary to periodically compact (purge).

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Filelink for Large Attachments

Messages with large attachments are often rejected by mail servers. Thunderbird can use web-based storage services to send large file attachments.

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Recover lost or missing Bookmarks

If your bookmarks have disappeared, it may be possible to recover them. Learn why bookmarks may seem to be missing and how to get them back.

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How to set the home page

Learn how to change what page you see when you first start Firefox, click the home button or open a new window.

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Allow or block media autoplay in Firefox

Firefox prevents media from playing automatically on websites you visit, unless you grant permission. Learn more about this feature.

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Legacy browser support extension for Windows

Add-ons and older versions of Firefox ESR may enable your users to run legacy add-ons and view websites that require Internet Explorer.

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Make Firefox your default browser

How to make Web links open in Firefox automatically by setting it as the default browser on your computer.

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How do I restore my tabs from last time?

This article explains the different options you have for opening the tabs and windows you had open the last time you used Firefox.

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Signatures

This article explains how to create and use custom signatures (text or images that are automatically appended to messages).

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How to set up Firefox Sync in Firefox for Android

How to enable sync on Firefox for Android to sync your bookmarks, credit cards, history, logins and open tabs across your devices.

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Compact mode workaround in Firefox

Learn about a workaround to activate compact mode, if you need to. This feature isn't supported and we still recommend using normal mode.

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Recommendations from Firefox

This article describes why and how extension recommendations are made, including how to turn off recommendations.

Firefox Firefox Last updated: 3 weeks ago

Archived Messages

This article explains how the "archive" feature of Thunderbird works.

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Import settings and data into Thunderbird

With Thunderbird's import tool, you can import settings and data from a variety of sources including Thunderbird profiles, other applications or files.

Thunderbird Thunderbird Last updated: 3 weeks, 1 day ago

New in Thunderbird for Android version 8

Introduction to the most interesting new features, improvements, and changes visible to users in Thunderbird for Android version 8.

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About Picture-in-Picture in Firefox

The Picture-in-Picture feature allows you to pop videos out of their webpage, so you can watch while continuing to work in other tabs.

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Use multiple profiles in Thunderbird

Thunderbird saves personal information such as messages, passwords and user preferences in a "profile". This article describes how to use multiple profiles.

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Disable or re-enable Pocket for Firefox

The Pocket save and recommendations features are included with Firefox by default. Learn how to disable or remove Pocket from Firefox and how to re-enable it.

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Tab preferences and settings

Learn how to customize tab settings in Firefox to enhance your browsing experience.

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Use bookmark folders to organize your bookmarks

Firefox allows you to group your bookmarks into folders to organize them by topic or task, etc. This article explains how to organize your bookmarks this way.

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Usernames and passwords are not saved

Firefox has a password management feature to store usernames and passwords for logging in to websites. Learn why logins might not be saved.

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Switch from Chrome to Firefox

Firefox can automatically move bookmarks, passwords, history and other preferences from Chrome without deleting it or interfering with any of its settings.

Firefox Firefox Last updated: 3 weeks, 2 days ago

Change the fonts and colors websites use

This article describes how to customize the way you see websites by choosing font styles and colors that will override those used by the websites.

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Search with the Firefox address bar

Learn how the address bar makes it easy to search the Web, find bookmarks or pages you visited before, use search engines and more.

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Find and install extensions on Firefox for Android

There are several extensions that you can install to add features to Firefox. Learn how to find, install and manage these add-ons to Firefox for Android.

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Protect your container tabs with Mozilla VPN

Mozilla VPN encrypts your connection so that third parties can't track your online activity. Learn how to add this protection to Containers.

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How do I use the Firefox spell checker?

Firefox's spell checker streamlines writing by auto-detecting errors, offering quick fixes, and with custom dictionary additions for flawless text.

Firefox Firefox Last updated: 1 week, 1 day ago

Hyperlinks in Messages Not Working

When clicking hyperlinks in email, your default web browser should open and display their content. Learn why that may fail and why links may not be clickable.

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Installing an Add-on in Thunderbird

Add-ons add functionality to Thunderbird or change its appearance. Learn how to install add-ons to Thunderbird.

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Access hidden tabs in Firefox

Firefox lets you know when there are tabs hidden in the background so you can access them easily.

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Importing Safari data into Firefox

Import data from your Safari browser into Firefox. You must enable Full Disk Access on macOS version 10.14 (Mojave).

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Firefox Suggest for Mobile

Firefox Suggest provides personalized website suggestions as you type in the address bar.

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Thunderbird Android Telemetry

This article describes controlling data that may be collected by Thunderbird for Android, to help improve performance and stability.

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Configuration Options for Accounts

Learn about the Account Settings window including server settings, identities, signatures, and more.

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Config Editor

Using the config editor to view or edit Thunderbird preference settings.

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How to Customize Toolbars

This article explains how to customize the position and contents of Thunderbird toolbars.

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Customize Firefox using AutoConfig

How to use AutoConfig files to set and lock preferences that are not covered by Firefox policies.

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Review installed extensions

Reviewing the extensions you have installed periodically can make it harder for malicious extensions to put your security and privacy at risk.

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Change the program used to open email links

Learn how to change the email program that Firefox opens when you click a “mailto” link, or use the “Email Link” and “Email Image” features.

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HTML5 audio and video in Firefox

Firefox can handle audio and video content on web pages and can open some media files. Learn about supported formats and managing playback.

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FAQ Changing IMAP to POP

If your mail server supports both IMAP and POP, Thunderbird will use IMAP by default. Use these instructions to manually configure a POP account.

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Message List Columns

This article explains how to configure the columns that Thunderbird displays in message lists.

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Open Search

Instantly take part of a message and search for it in Bing, Yahoo, Twitter or other websites.

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Voice input in Firefox for Android

Learn how to use the voice input feature to speak into the address bar instead of typing text.

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Access your add-ons with a Mozilla account

The addons.mozilla.org (AMO) site is using Mozilla accounts to offer a more integrated experience across all Mozilla services and products.

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Debugging policy issues

This article will help you figure out problems with policies not applying.

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Manage Firefox updates

Learn about automatic updates for Firefox deployments and how to ensure that the latest security patches are applied and all features are available.

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Collections in Firefox

Learn how to use the Collections feature.

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Tab context menu

Explore the features available in the tab context menu in Firefox, including options for managing and organizing your tabs.

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End of support for Adobe Flash

Like other browsers, Firefox has ended support for Adobe Flash. Learn about the details here.

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Unified Toolbar

Intro to the Unified Toolbar and how to customize the buttons for the different toolbars for: Mail, Address Book, Calendar, Tasks, Chat and Settings "Spaces."

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How to fix preferences that won't save

This article tells you how to fix issues where Firefox can't save some or all of the preference settings that you try to change.

Firefox Firefox Last updated: 1 week, 1 day ago

Cannot remove an add-on (extension or theme)

This article describes how to uninstall an extension or theme that can't be removed normally. This includes problematic toolbars and search bars.

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Firefox doesn't save web form entries

Firefox's autocomplete feature lets you save and reuse text field entries in web forms. If you're no longer able to auto-fill your forms, follow these steps.

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How do I quit Firefox for Android?

Add the Quit option to your menu to automatically delete your browsing history and close all tabs every time you exit the app.

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Creating a Newsgroup Account

Thunderbird can be used to read messages from and write messages to Usenet newsgroups.

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Configuration Options for Tags

This page describes Thunderbird's configuration options as they relate to tagging messages.

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Instant Messaging and Chat

As of Thunderbird 52.x, Thunderbird supports instant messaging and chat using IRC, XMPP, Twitter, and Google Talk

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Customize Firefox Home on iOS

Firefox Home on your iOS device displays your shortcuts, your library, recently visited tabs, recently saved bookmarks and Pocket article recommendations.

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Set Firefox as the default browser for iOS

In iOS 14+ you can now change your default browser. Learn how to change your default browser or other options for older versions.

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Customize Firefox using policies.json

Cross-platform policy support can be implemented using a JSON file called policies.json.

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Feed reader replacements for Firefox

Firefox's built-in support for web feeds and Live Bookmarks ended in December 2018 with version 64. Learn more and find alternatives.

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Manage policies on macOS desktops

Starting with Firefox 64 and Firefox ESR 60.4, Firefox supports configuration files on macOS.

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How to fix Pocket login issues

Learn how to add an exception for Pocket in Firefox, to prevent being prompted to sign in to Pocket when saving to the site.

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Dangerous directories

Some system folders are not allowed when setting Thunderbird storage location as they cause issues.

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Playing videos in Firefox for Android

Firefox for Android gives you lots of options for playing video and audio on your phone, including background playback and auto-play settings.

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Customize Firefox on macOS using configuration profiles

On macOS, Firefox supports customizing policies with a properties list (.plist) file that can be converted to a configuration profile. Learn more.

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Firefox for Enterprise Kiosk mode

Kiosk mode locks down Firefox in order to protect the kiosk from users. Learn more.

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Pocket sponsored stories on new tabs

Pocket occasionally partners with select publishers and brands to deliver sponsored stories on the Firefox New Tab page. Learn more.

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Mozilla Voice Server Proxy Retiring

Mozilla is ending official support for the Mozilla Voice Proxy Server and its related projects. Learn more about the retirement of server and extensions.

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View bookmarks on your home screen

You can access your bookmarks and recent searches from your Firefox for Android home screen.

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Personalize Firefox with colorways

Personalize your browsing experience with Colorways themes for Firefox, created in partnership with an industry color specialist.

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How to move the search bar in Firefox for iOS

The search bar in Firefox for iOS will appear at the bottom of the screen by default. However, you can choose to move it to the top of the screen instead.

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New in Thunderbird 102

Detailed introduction to the most interesting new features, improvements, and changes visible to users in Thunderbird 102.0.

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Site Permission Add-ons

Sites can ask to install permission add-ons that modify Firefox’s default security behavior to give them extra privileges. Learn more.

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Domains to allow for Firefox

This article is primarily for Firefox for Enterprise. It lists domains that should be allowed by your firewall or other software, so Firefox works correctly.

Firefox for Enterprise Firefox for Enterprise Last updated: 3 weeks, 5 days ago

New in Thunderbird 115 Supernova

Detailed introduction to the most interesting new features, improvements, and changes visible to users in Thunderbird 115.0 Supernova.

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Address autofill on Firefox

Experience the seamless Address Autofill in Firefox iOS, simplifying address entry on websites.

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Enable or disable Local Network Access on iOS

LAN Bypass allows you to control whether or not your device can access devices on the local network while the VPN is on. Examples of these can be your network printer, your smart TV, AirDrop and CarPlay.

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Notifications in Thunderbird

This allows Mozilla to push important, time-sensitive notifications to users. These notifications are scheduled based on version, OS and locale.

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Gmail and Thunderbird for Android

How to use gmail and gmail with oauth2 with Thunderbird for Android and K-9.

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