Best Free Firefox Add-ons


 Best Free Adblocking Add-ons for Firefox


Adblock Plus is a very well-known and popular adblocker, possibly even the most popular add-on there is. The default setup can block an impressive number of ads on an equally impressive number of websites.

Its functionality is based on plugin-like blacklists for ads, called filter lists. Subscribing to a list adds it to your setup, after which the filters will start working and blocking ads. EasyList is installed by default, but there are alternatives for everyone's tastes all over the web.

ABP comes with its fair share of performance problems though. Popular filter lists like EasyList are mindbogglingly huge and require a lot of RAM and CPU power to process. Page loading becomes noticeably slower due to all the processing of the page's content and Firefox becomes very slow after only a few minutes of browsing. To add insult to injury, most of this is completely and utterly in vain: less than 1% of the filter lists' content is actually of use to you because the other 99% only works on websites you never even visit.

However, that does not mean ABP is unusable. When used right, it can easily block all ads on every website you go to without any excess work and with almost no performance impact. Read my extensive article to learn how to get the most out of ABP!


Element Hiding Helper is a plugin for ABP. It allows you to create and use custom filters for specific page content that you don't like. Simply click "Select an element to hide", hover over the content you want to remove, adjust the target selection and click. Gone!

In order to use EHH, you'll need some basic understanding of webpage technicalities. You'll need to be able to specify filtering criteria that match only the things you want to remove and not the content you want to keep. I recommend reading my article from the previous paragraph, as it also goes into details about using EHH.


Bluhell Firewall is a small, lightweight and surprisingly effective adblocker. It has absolutely no configuration or other settings. Its filtering is based on a contraction of the popular EasyList (default list in ABP). It has almost no performance impact, but as you can guess, it also does not perfectly block everything. It's a trade-off between performance and efficiency. However, BF is part 3 of the adblocking setup I personally use, which combines the best performance with the best adblocking efficiency. Read my article in the ABP paragraph to find out more!


FlashBlock, Flash is a necessary evil on today's internet. Many websites use it, but almost always for entirely wrong purposes. Being an Adobe product, its performance, programming ethics, system integration and security leave much to be desired. It often causes freezes and other performance hiccups when it's used on webpages. For that reason, FlashBlock was created.

If a page has some embedded Flash content, FB replaces it with a placeholder or button, thus preventing Flash from starting and improving overall browsing performance. If you decide you need blocked content, simply click the placeholder and the Flash element will be restored as if nothing happened. Sites like YouTube (which still mainly uses a Flash player) can be whitelisted.



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I know nothing of SecureLogin, i've been using LastPass for years.

Have you tested Cookie Controller?

I think it's the same in firefox, but in palemoon flashblock is pretty much useless as the flash plugin itself can be set to Ask to activate.

This one Download Flash and Video pretty much always works.
For Youtube i use the feature of SmartVideo for Youtube and there's also when i'm not using my own Palemoon browser. I used to use DownThemall and DownloadHelper, but they aren't necessary anymore.

I like Stylish, it's just a bit hard to find styles that do what i want.

Palemoon commander, yes!

I also always have Mozilla Archive Format and FEBE.

Ghostery, AdBlockEdge & AdBlockPlus (with proper config) are all roughly equal in ability to protect privacy. Disconnect comes in at a distant 4th.

[There is an obvious opt-out choice for anonymous reporting to Ghostery - I don't see any issue unless you don't pay attention and you SHOULD pay attention when installing software.] You need to do your homework when you configure AND UPDATE these add-ons; the default settings are NOT usually the best.

All according to this useful continuous testing site:

which also helps you to configure the add-ons properly.

If you browse widely to 'new' urls on a continuous basis, NoScript is a royal pain in the butt.

1/ Adblock has some deal with advertising company, I recommand the fork Adblock Edge
2/ Some website are blocking you if Adblock is enabled.
A Greasemonkey script removes many protections used on some website that force the user to disable the AdBlocker
Anti-AdBlock Killer :

Do you have anything to back up your claim in #1? I've compared ABP to ABE and don't notice any improvement or other advantage. I can hardly imagine there being any bias in ABP if you use custom filters either, what's a deal with an ad company supposed to impact? It's also a fork of the original, which to me is a caution bell signaling reduced app quality. I'm a bit reluctant to post that script from #2 because it's not an add-on and it's only site-specific... It'll never be a comprehensive solution. Thanks for the reply though.

For #1 you'll find information for example here

For #2 It's not site specific. It's specific to all website tracking adblock users

#2 actually, it is. :) "However, this script is not a universal remedy for all anti-adblock protection. this is why I am counting on all user for my report." There's also the "Supported Sites" section. Yes, it does target 4 particular, popular anti-AB scripts websites use. But that does not make it specific to all websites blocking adblock, only to the specific sites that have been reported so far + the sites that use those 4 particular scripts. It's kind of the same problem as with ABP's EasyList: 9 bazillion filters of which you'll only use 5, and those 5 will only be 1% of your browsing habits. Either way, this article really isn't for GM scripts. Supporting a section for those would make this article far too large to maintain.

Some add-on suggestions for the editor

Page 1: Security
Secure Login

Page 3: Privacy
No Cookie for Google search

Page 4. Adblocking
Silent Block

Page 5: Downloading
Download Panel Tweaker

Maybe more categories, e.g.
-utilities/tools like FireFTP
-Photos, Music & Videos like ImageTweak, YouTube Grid View
-firefox customization like Tab Mix Plus, Location Bar Enhancer etc.
-performance like Local Load, Tweak Network
-advanced config like Pale Moon Commander, Configuration Mania, Config Descriptions

Very nice suggestions! :) I love how I already use half of those add-ons, I hadn't even thought of them yet xD


It could either go in section 9 or section 2.

It displays a small country flag at the right hand side of your address bar, showing the country that the web server is located in. When you hover your mouse pointer over the flag it displays the server's name, IP address and name of the country of origin.

BTW, you should warn users of Ghostery not to agree to the information collection part of Ghostery. You're just replacing one set of spies with another, the Ghostery company itself.

Flagfox is already in there, waiting for a details paragraph. I'll add that, thanks.

"Anyone can make there own, incredibly useful, easy to use, takes up very little room, for me reliable."

There? How about their?

That's from the previous editor :) I'm only at page 5 at the moment, page 5 and every page after it still needs to be cleaned up and revised.
Not much listed under download managers: my favourite of the genre is DownThemAll ( There's also a tiny extension called OpenDownload which simply adds the option to open a download from the usual "save" dialogue. Obviously, the rationale for NOT having the "run" option in that dialogue in Firefox is security, so the use of this extension has its risks. There's a heading for it on the Forms page but no detail yet: Lazarus, to be found at Lazarus is a safety net. It remembers what you've typed into a webform so, if something goes wrong or you lose what you've typed, it'll have quietly remembered what you did and offer to put it back for you. I commend it to your attention :)
DTA was already in there. The section as a whole is quite empty because the article is a WIP and because download manager add-ons are not something I've used often yet. I also avoid add-ons I believe to be too dumbed-down or case-specific, such as Youtube MP3 converters and such. OpenDownload is a nice suggestion, thanks. I'm an opponent of boxing users into cages under the false motto of protection and security, like Mozilla is trying to do. Installed already and loving it. And yes, I'm familiar with Lazarus, that's why I put it there: so I can work on it when I get to that section. Textarea Cache does something similar, but of course only on textareas. Handy to rescue WIP forum posts without revealing possibly sensitive form info. :)