The 20 Best Firefox Quantum Extensions of 2019

The right addons can turn Firefox into a browser you can't live without

In addition to Firefox Quantum's new features, Mozilla made a move to replace traditional add-ons with web extensions. Having the right extensions installed can significantly improve your productivity, but also your overall web browsing experience. Below are 20 of the best Firefox add-ons and extensions for Firefox Quantum that cover security and privacy, productivity, ergonomics, tools, and more.

01
of 20

Lightshot: Take, Edit, and Upload Screenshots

Screenshot of the Lightshot web extension in use
What We Like
  • Reliable online storage.

  • Good variety of editing tools.

What We Don't Like
  • Grabbing the entire screen sometimes takes a second adjustment.

The Lightshot web extension for Firefox Quantum takes and edits screenshots, right from the browser. Screen captures are saved locally or to Lightshot's free cloud storage.

02
of 20

Privacy Badger: Block Invisible Web Trackers

Screenshot of Privacy Badger's options
What We Like
  • Blocks trackers without breaking most sites.

  • The extension learns when to block intrusive trackers.

What We Don't Like
  • Not all types of trackers get blocked.

  • The extension requires a bit of initial configuration.

Privacy Badger blocks online trackers intuitively by learning which sites are tracking you while you browse. By default, the extension will block any trackers that don't abide by the 'do not track' signal sent from your browser.

03
of 20

uMatrix: On The Fly Script Blocking

Screenshot of uMatrix drop-down metrics
What We Like
  • A useful tool for full privacy control.

  • You get to choose which scripts run.

What We Don't Like
  • The user interface and options are for intermediate to advanced users.

With uMatrix, you can choose to block or allow various web scripts, ads, iframes, etc. You have full control over what requests your browsers allows or denies.

04
of 20

History AutoDelete: More Power Over Your Web History

Screenshot of the History AutoDelete Extension in Firefox Quantum
What We Like
  • Reliably auto deletes your browsing history.

What We Don't Like
  • Scrolling performance can be affected.

History AutoDelete gives you the ability to delete the history for specific domains automatically. You can also remove older browsing entries by a specified number of days.

05
of 20

Cookie AutoDelete: Take Control of Your Cookies

Screenshot of Cookie AutoDelete's drop-down options
What We Like
  • Good white and greylist options.

What We Don't Like
  • Deleting cookies from containers may be confusing.

The Cookie AutoDelete extension automatically removes cookies from the tabs you close, as well as deletes all cookies for a specific domain. Cookie AutoDelete also supports container tabs in Firefox 53 and up.

06
of 20

Video DownloadHelper: Grab Online Videos for Offline Viewing

Screenshot of Video DownloadHelper in Firefox Quantum
What We Like
  • Straightforward user interface and functionality.

  • Multiple video formats offered.

What We Don't Like
  • Sometimes the extension doesn't recognize HD availability.

  • Additonal software may be required for full use of features.

Video DownloadHelper gives you the power to download online videos (your own, of course), in a variety of popular formats, directly from Firefox. VideoDonwloadHelper supports a large list of video sites; YouTube, DailyMotion, Vimeo, Facebook, and Periscope to name a few.

07
of 20

Dark Reader: Protect Your Eyes When Browsing at Night

Screenshot of text with the Dark Reader web extension enabled
What We Like
  • Reduces stress on the eyes when reading in low light settings.

What We Don't Like
  • Some browser icons can be difficult to see.

Dark Reader's primary purpose is to reduce the harshness on the eyes caused by bright color schemes found on some websites. You can adjust the brightness, contrast, and font, as well as use an ignore list.

08
of 20

Export Tabs URLs: View Your Tabs in a Text File

Screenshot showing a list of links in the Export Tabs URLs drop-down box
What We Like
  • Easy enough for anyone to use.

What We Don't Like
  • Lists are limited to the current browsing window.

View, export, or copy the URLs of all your open browser tabs. You can include the page title along with the domain, and the exported file comes with a timestamp.

09
of 20

AdNauseam: Ad Tracking Protection

Screenshot of AdNauseam's options page
What We Like
  • Protects your data against online ad tracking.

  • View each ad collected in the extensions AdVault.

What We Don't Like
  • The lack of dynamic filtering.

AdNauseam is an extension built to protect your information against advertising tracking, as well as hidden malware. Ad networks like to track their users, so AdNauseam works to scramble your data, rendering it useless to said trackers.

10
of 20

Wayback Machine: View Archived Versions of Dead Web Pages

Screenshot of the Wayback Machine web extension for Firefox Quantum
What We Like
  • Good at picking up dead or non-responding pages.

What We Don't Like
  • The extension can sometimes redirect to an archived version when there's a proper live page.

Wayback Machine provides archived versions of pages that display 404s, DNS errors, and any other domain or web-related issues. Also, you can archive web pages by selecting the Wayback icon, as well as view the pages archived history.

11
of 20

View Image: Restores Buttons in Google Images Search Results

Screenshot of View Image's options
What We Like
  • Brings back the 'View Image' and 'Search by Image' buttons.

What We Don't Like
  • There are a few compatibility issues with older versions of Firefox.

The View Image web extension brings back both the View Image and Search by Image buttons in Google images search results. When the buttons got removed, many users were left frustrated. The View Image addon restores the older functionality many are more comfortable with.

12
of 20

Download Star: Grab Website Content Based on Patterns

Screenshot of Download Star's site downloading options
What We Like
  • Scrapes web contents thoroughly.

What We Don't Like
  • The user interface can be a little confusing at first.

Download Star makes downloading items from a website a breeze. You can edit the addon's filters to specify certain types of matching files. You also have control over which files get scraped with the use of three handy buttons (links, images, and text) located in the bottom left corner.

13
of 20

Smart Referer: Only Send Referers When on the Same Domain

Screenshot of Smart Referer's settings page
What We Like
  • Handy configuration options.

What We Don't Like
  • Can be confusing when the extension icon is greyed out.

Smart Referer works by only sending referrer headers while remaining on the same domain. You can edit filters and create a whitelist of domains that will send referrers as usual.

14
of 20

Reverse Image Search: Look up Images Right From Firefox

Screenshot of the Reverse Image Search web extension
What We Like
  • Multiple image searching options.

  • Returns search results quickly.

What We Don't Like
  • Some compatibility issues on mobile versions of Firefox.

Reverse Image Search adds an option to the context (right-click) menu to search for the origin of an image. The extension uses TinEye, SauceNAO, Google, Yandex, Bing, and IQDB, with the option of setting up custom search engines.

15
of 20

ScrollAnywhere: Control the Scrollbar With Your Middle Mouse Button

Screenshot of ScrollAnywhere's preferences
What We Like
  • Makes scrolling long form pages a breeze.

  • The momentum feature is fun.

What We Don't Like
  • The addon doesn't function on browser configuration pages such as about:config.

  • Will not function in PDF view.

The ScrollAnywhere web extension gives you a lot more control over your scrolling. Manipulate the scrollbar with your middle mouse button without actually using the browser's scrollbar. There's an option to enable infinite scrolling, as well as the ability to change the cursor mid-scroll.

16
of 20

Iridium: Enhance Your YouTube Experience

Screenshot of the Iridium for YouTube web extension
What We Like
  • You can stop entire channels from displaying in your suggestions.

  • The option to disable 60 fps/frames per second.

What We Don't Like
  • Videos freeze on rare occasions.

Iridium lets you customize your YouTube viewing experience with a wide variety of extra features. You can set the extension to only permit ads from your subscribed channels, as well as make the video player fit the full screen.

17
of 20

Disable JavaScript: Run JS When You Want

Screenshot of Disable JavaScript's settings
What We Like
  • Simple and easy to follow options.

What We Don't Like
  • Knowing which JS to avoid or allow can be confusing for beginners.

The Disable JavaScript extension gives you the option of disabling JavaScript for specified tabs or sites. Shortcuts are available for enabling and disabling JS, and you can easily view your whitelisted or blacklisted domains.

18
of 20

Firefox Multi-Account Containers: Keep Your Online Life Separated

Screenshot of Mozilla's Multi-Account Container drop-down options
What We Like
  • Streamlines browsing by allowing simultaneous logins.

What We Don't Like
  • Functionality can be limited when browsing in private mode.

Multi-Account Containers keeps your online identities separate from one another. You can stay signed into multiple accounts at the same time, and your cookies get compartmentalized by containers.

19
of 20

Facebook Container: Stop Facebook From Tracking Your Web Habits

Screenshot of the Facebook Container web extension for Firefox Quantum
What We Like
  • Seamless and smooth integration with Firefox Quantum.

What We Don't Like
  • Can cause issues when using Facebook to sign into other accounts.

It's pretty obvious Facebook tracks their users' browsing patterns when signed in. Facebook Container segregates your web activity from your Facebook account and eliminates any tracking.

20
of 20

Undo Close Tab: Get That Tab Back With One Click

Screenshot of the Undo Close Tab extension
What We Like
  • Easy to use.

  • The extension blends nicely with other add-on icons and toolbars.

What We Don't Like
  • The dark icon can be a little tough to see when using dark browser themes.

Undo Close Tab is a simple yet effective extension that will bring back any tabs you accidentally close. You can also access twenty-five of the most recently closed tabs, all from the extension's handy toolbar.