The 18 Best Firefox Extensions

The browser Firefox, developed by the Mozilla Foundation, has a large library of extensions. Also called add-ons, extensions are used to expand the browser's range of functionality, making web browsing more dynamic, productive and fun. 

Firefox extensions can offer productivity tools, media playback features, additional privacy options, and more.

Check out the list of the best Firefox extensions in the following categories:

Utilities

The utilities category gathers extensions that make the browser more convenient and versatile.

Nimbus Screen Capture

While Firefox has a native screen capture tool, the Nimbus Screen Capture extension offers additional features such as a built-in editor, annotation tools, and the ability to save screenshots directly to Google Drive, Dropbox, or even Slack.

Wayback Machine

Created by the Internet Archive digital library, the Wayback Machine allows you to access older versions of web pages. This feature is useful for referring to sites that have been taken down or removed some old content that you would like to access.

View Image

Simple and useful, the View Image extension brings back the button to view images found in google search results. The button was removed by the search engine to encourage users to access the original source of the images. View Image directs the user directly to the address of the image itself.

Reverse Image Search

The Reverse Image Search extension adds an option to the menu displayed when you right-click on an image in Firefox to search for that image on Google or another search engine of your choice.

Hello Free VPN Proxy Unblocker

The Hola extension offers a VPN for you to access websites and content blocked in the country or through restricted networks. This type of service can be useful, for example, to access streaming services that are not available in Brazil. However, it is worth mentioning that all content trafficked on the VPN can be tracked by Hola, so avoid using it for private or sensitive activities.

Productivity

The productivity category includes extensions that help you avoid distractions, focus on the tasks that really matter, and improve results.

Tomato Clock

Based on the Pomodoro time management technique, the Tomato Clock extension provides a timer to help you focus on a task for 25 uninterrupted minutes. An alert is issued at the end of the period and Tomato Clock allows you to customize the duration of focus periods and intervals.

Impulse Blocker

This is yet another extension whose goal is to stay focused and avoid distractions. With Impulse Blocker, you create a list of sites you want to avoid accessing, such as social networks, shopping or news, games, etc. If you fall into the temptation, Impulse Blocker blocks access. And if it's time for the break, you can stop the block by selecting a period from 5 minutes to 3 hours.

Grammarly

Very popular with professional writers and copywriters, the Grammarly parses the texts entered in the browser and suggests corrections for typos or grammatical errors. In certain languages, the service is also able to suggest aesthetic enhancements to the content to make it clearer and more sophisticated.

To provide these features, Grammarly sends and stores typed content on the company's servers. To preserve your privacy, when sending private or sensitive messages through the browser, you can disable the extension.

Personalisation

The personalization category houses extensions that make Firefox your own.

Dark Reader

Although many sites offer a dark mode (dark mode) for easy reading at night, Dark Reader lets you apply this effect to any web page. The extension inverts the colors and high contrast of the websites, and offers options for you to also adjust the brightness, contrast, sepia filter and fonts.

Firefox Color

Developed by Mozilla itself, the Firefox Color extension allows you to create your own custom themes for Firefox. A number of interface elements such as the toolbar, address bar, tabs, popup windows, icons and fonts can be customized with user-selected colors and images. At the end, it is possible to generate a link to share the theme with other users.

Privacy and Security

The privacy and security category lists extensions that protect your browsing from trackers and snoops in general.

Privacy Badger

Privacy Badger is an extension that blocks a wide variety of trackers, which prevents your information from being captured by unknown companies. As you browse, the extension learns to identify trackers and blocks them. This intelligence reduces the chances that any website you are trying to use will break, which is common with ad-blocking extensions.

AdNauseam

The AdNauseam extension protects your privacy through a very interesting technique: instead of just blocking ads, it clicks on the ads on the page, behind the scenes, confusing advertisers about your interests. Thus, brands will not know their real interests, as they will be mixed with the other ads on which the extension clicked.

Facebook Container

Developed by Mozilla, the Facebook Container extension isolates your Facebook browsing from other websites you visit on the internet, preventing Mark Zuckerberg's network from tracking everything you do on the internet. 

DuckDuckGo Privacy Essentials

DuckDuckGo is one of the best alternatives to Google's search tool, as it does not use users' personal data to display personalized ads. In addition to making DuckDuckGo the default search service for Firefox, the extension blocks trackers, forces websites that offer HTTPS connections to use them, and even offers a privacy scoring system so you know which websites are most compromised with yours. protection.

Media

The media category contains extensions that make it easier and better to consume content in Firefox.

Video DownloadHelper

If you've published videos on a site like YouTube or DailyMotion, but you've lost the original files, you can use Video DownloadHelper to download content directly from the pages where they're hosted.

Worldwide Radio

If you are interested in listening to radio stations from other countries, you will enjoy the Worldwide Radio extension. It allows live access to more than 45 radio stations from dozens of countries, such as the United States, France, Holland, Canada, among others.

YouTube Enhancer

This extension offers a number of features and tools to make your YouTube browsing experience richer and more personalized. Among the available options are automatically playing the video in the desired resolution, such as 4K or HD, repeating the video and controlling the volume with the mouse wheel.

Turn off the lights

Simple and efficient, the Turn Off the Lights extension has only one function: to darken the page around a video so you can watch it without distractions, like in a movie theater. The extension is compatible with major video sites such as YouTube, DailyMotion, Vimeo, Twitch and Facebook.

Do you know any other must-have extensions for Firefox? Tell us in the comments.