Firefox extensions expand the functionality of the browser with new features not available in the default program. Below are the best Firefox add-ons (aka extensions) that cover security and privacy, productivity, ergonomics, tools, and more.
The Cookie AutoDelete Firefox 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.
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 page’s archived history.
Video DownloadHelper gives you the power to download online videos (your own, of course), in a variety of popular formats, directly from Firefox.
This Firefox extension supports a large list of video sites: YouTube, DailyMotion, Vimeo, and Facebook, to name a few.
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.
The History AutoDelete Firefox extension gives you the ability to delete your browsing history for specific domains automatically. You can also remove older browsing entries by a specified number of days.
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, but having at least intermediate knowledge will help you get the most from this plugin.
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.
The Lightshot web extension for Firefox takes and edits screenshots, right from the browser. Screen captures are saved locally or to Lightshot’s free cloud storage.
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.
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.
Download Star makes downloading items from a website a breeze. You can edit the add-on’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.
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.
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.
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.
Smart Referer works by only sending referrer headers while remaining on the same domain. You can edit filters and create a safe list of domains that will send referrers as usual.
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.
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.
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.
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 allowed or excluded domains.
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.
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