The best Firefox extensions for privacy

Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.

An efficient blocker add-on for various browsers. Fast, potent, and lean.

uBlock Origin is NOT an "ad blocker": it is a wide-spectrum blocker -- which happens to be able to function as a mere "ad blocker". The default behavior of uBlock Origin when newly installed is to block ads, trackers and malware sites -- through EasyList, EasyPrivacy, Peter Lowe’s ad/tracking/malware servers, Online Malicious URL Blocklist, and uBlock Origin's own filter lists.

Web browser add-on that automatically learns to block invisible trackers that ignore DNT signals.

Emulates remote frameworks (e.g. jQuery, Bootstrap, AngularJS) and delivers them as local resource.

Control your cookies! Auto deletes unused cookies from your closed tabs while keeping the ones you want.

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

Many websites use tracking elements in the URL (e.g. https://example.com?utm_source=newsletter1&utm_medium=email&utm_campaign=sale ) to mark your online activity. All that tracking code is not necessary for a website to be displayed or work correctly and can therefore be removed—that is exactly what ClearURLs does.

Another common example are Amazon URLs. If you search for a product on Amazon you will see a very long URL, such as: https://www.amazon.com/dp/exampleProduct/ref=sxin_0_pb?__mk_de_DE=ÅMÅŽÕÑ&keywords=tea&pd_rd_i=exampleProduct&pd_rd_r=8d39e4cd-1e4f-43db-b6e7-72e969a84aa5&pd_rd_w=1pcKM&pd_rd_wg=hYrNl&pf_rd_p=50bbfd25-5ef7-41a2-68d6-74d854b30e30&pf_rd_r=0GMWD0YYKA7XFGX55ADP&qid=1517757263&rnid=2914120011

Indeed most of the above URL is tracking code. Once ClearURLs has cleaned the address, it will look like this:
https://www.amazon.com/dp/exampleProduct

Why use this extension as opposed to similar ones?
Most other “link cleaners” employ about a dozen rules when looking for tracking parameters to remove. ClearURLs utilizes over 130 rules, so its capabilities are more comprehensive.
And ClearURLs is open source, so everyone can join in to the project and/or can check the source code to error or malicious code.

What do we collect?
This extension protects and respects your privacy. We do not—and will never—collect any of your usage data.

What do I do if I have trouble?
Visit our GitLab page or check out our wiki.

Write us...
If have any suggestions or complaints, please contact us on GitLab.

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! Here is a quick video showing you how it works.

Under the hood, it separates website storage into tab-specific Containers. Cookies downloaded by one Container are not available to other Containers. With the Firefox Multi-Account Containers extension, you can...

Sign in to two different accounts on the same site (for example, you could sign in to work email and home email in two different Container tabs.
Keep different kinds of browsing far away from each other (for example, you might use one Container tab for managing your Checking Account and a different Container tab for searching for new songs by your favorite band)
Avoid leaving social-network footprints all over the web (for example, you could use a Container tab for signing in to a social network, and use a different tab for visiting online news sites, keeping your social identity separate from tracking scripts on news sites)

After installing the Firefox Multi-Account Containers extension, click the Containers icon to edit your Containers. Change their colors, names, and icons. Long-click the new tab button to open a new Container tab.

Privacy in Firefox Multi-Account Containers

The Firefox Multi-Account Containers extension does not send any information to Mozilla.

Haven't I seen this in Firefox before?

Firefox Multi-Account Containers was first introduced as "Containers" available only in Firefox Nightly. It went on to be a Test Pilot Experiment, where we improved the user experience and added new features. Now it exists here as an extension that can be installed by all Firefox users.

Although you can still use the feature built into Firefox Nightly, we recommend using this extension as it has a richer user experience.

This extension helps you control more of your web activity from Facebook by isolating your identity into a separate container.

Easily open disposable containers that isolate attached data and are deleted after usage: Fully automatic, based on navigation-target, for certain websites, with configured mouse clicks on links or just by using the toolbar icon.

Want to make the most out of Temporary Containers? Enable Automatic Mode!
The Automatic Mode will overwrite your standard ways of opening new tabs - even when opened from an external program. Instead of opening tabs in No Container, it will open them in a freshly created Temporary Container. No more cookie, cache and storage collecting in one place, everything happens in its own isolated Temporary Container. If you enable Automatic Mode, you should also configure Mouse Clicks to open new Temporary Containers. Recommended preferences:

Isolation > Global > Mouse Clicks:
Middle Mouse: Always