Welcome to my comprehensive guide on the best Firefox extensions to supercharge your browsing experience! As one of the most popular web browsers, Firefox offers a remarkable level of flexibility and customization through its vast extension ecosystem. These extensions are like small add-ons that can enhance various aspects of your browsing, ranging from productivity and privacy to aesthetics and tailored experiences on platforms like YouTube and Reddit.

Productivity

Tree Style Tab

This extension provides the ability to work with tabs as “trees”.

New tabs opened from the current tab are automatically organized as “children” of the current tab. Such “branches” are easily folded (collapsed) by clicking on the arrow shown in the “parent” tab, so you no longer need to suffer from too many visible tabs. If you want, you can restructure the tree via drag and drop.

Simple Tab Groups

Simple Tab Groups works across browser instances/windows too. If you select a group in another window, the selected window will jump to the foreground with the chosen group selected. You can even select the specific tab within that group in background browser windows.

Firefox Multi-Account Containers

The Firefox Multi-Account Containers extension lets you carve out a separate box for each of your online lives – no more opening a different browser just to check your work email!

DownThemAll!

DownThemAll will help you select, queue, sort and run your downloads faster. It comes with advanced ways to select what links to download, and will remember your previous decisions so that you can queue more downloads with just One Click!

Advanced users will also like using renaming masks, which let you automatically assign names (and even sub-folders within your downloads folder), fast-filtering or even custom, re-usable filters.

SingleFile

SingleFile is an add-on for Firefox Desktop and Mobile that helps you to save an entire webpage* including images, styling, frames, fonts etc. as a single HTML file*.

To Google Translate

This extension creates a context menu item in Firefox. When you click on this menu item, the previously selected text is sent to Google Translate for translating or to Google TTS for listening pronunciation. You can setup the default languages for translation on the options page.

Privacy

uBlock Origin

An efficient wide-spectrum content blocker. Easy on CPU and memory.

User-Agent Switcher and Manager

Spoof websites trying to gather information about your web navigation—like your browser type and operating system—to deliver distinct content you may not want.

Privacy Badger

Privacy Badger automatically learns to block invisible trackers. Instead of keeping lists of what to block, Privacy Badger automatically discovers trackers based on their behavior.

ClearURLs

This extension will automatically remove tracking elements from URLs to help protect your privacy when browsing through the Internet.

LocalCDN

LocalCDN is a web browser extension that emulates Content Delivery Networks to improve your online privacy. It intercepts traffic, finds supported resources locally, and injects them into the environment. All of this happens automatically, so no prior configuration is required.

Facebook Container

Facebook Container works by isolating your Facebook identity into a separate container that makes it harder for Facebook to track your visits to other websites with third-party cookies.

Google Container

Google Container works by isolating your Google identity into a separate container that makes it harder for Google to track your visits to other websites with third-party cookies.

It is a fork of the Facebook Container addon.

Quality of Life

Auto Tab Discard

“Auto Tab Discard” is a lightweight browser extension that automatically reduces the amount of memory used by open but inactive tabs, helping to conserve battery life on portable devices by disabling JavaScript code and DOM events on discarded tabs.

I don’t care about cookies

The EU regulations require that any website using tracking cookies must get user’s permission before installing them. These warnings appear on most websites until the visitor agrees with the website’s terms and conditions. Imagine how irritating that becomes when you surf anonymously or if you delete cookies automatically every time you close the browser.

This add-on will remove these cookie warnings from almost all websites! You can report any website which still warns you about cookies: just click ‘Report a cookie warning’ from the extension menu (the brown cookie image next to your address bar).

In most cases, the add-on just blocks or hides cookie related pop-ups. When it’s needed for the website to work properly, it will automatically accept the cookie policy for you (sometimes it will accept all and sometimes only necessary cookie categories, depending on what’s easier to do). It doesn’t delete cookies.

Aesthetics

Dark Reader

This eye-care extension enables night mode creating dark themes for websites on the fly. Dark Reader inverts bright colors making them high contrast and easy to read at night.

You can adjust brightness, contrast, sepia filter, dark mode, font settings and ignore-list.

Social Platforms

YouTube

Enhancer for Youtube™

Built to get the most out of YouTube, this extension comes packed with all sorts of features that allow you, among other things, to manage ads as you wish, control the playback speed and the volume level with the mouse wheel, automate repetitive tasks such as selecting the appropriate playback quality, configure dozens of keyboard shortcuts to control YouTube like a pro, and much more… Give it a try! But be aware that you will never want to use YouTube without it again ;)

PocketTube

Using this simple extension you can create collections that seamlessly fit into YouTube layout. This is easy way to manage Youtube subscription / channels.

This extension enables you to:

• Create group collections list on YouTube.
• Group YouTube subscription / channels to collections / group. One YouTube subscription / channel can has few collections
• Add custom icon for collection. Choice prepare icons or upload own one
• Show last YouTube videos by collections / group. Play all video by collections using YouTube playlist
• Auto sync your collections on Android/iOS/Firefox using Google drive and Chrome profile
• Integration in Youtube main page
• Filter video by category on Youtube feed subscriptions page
• Hide watched YouTube video
• Order by last YouTube activity, a-z, subscription count and custom
• Catch up your Youtube subscriptions

Return YouTube Dislike

Returns ability to see dislike statistics on youtube.

SponsorBlock

Easily skip YouTube video sponsors. When you visit a YouTube video, the extension will check the database for reported sponsors and automatically skip known sponsors. You can also report sponsors in videos.

Reddit

Reddit Enhancement Suite

Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.

Unreddit

Read removed Reddit comments.