Control Your Web Content: Essential Extensions to Block Tracking and Scripts

Dan Price 31-01-2015

The web can be fraught with danger, with countless entities desperate to steal your information, coerce you into clicking on their link, or manipulating you into sharing your data with them. Whether its ad agencies wanting to know about your likes and dislikes, social How To Block Facebook And Other Social Networks From Tracking You Online Whenever you visit a site with a Like, Tweet or +1 button, you're actually sharing data with Facebook, Twitter or Google. And that's not all. There are hundreds of advertising and data collection companies that... Read More networks tracking your online movements How To Block Facebook And Other Social Networks From Tracking You Online Whenever you visit a site with a Like, Tweet or +1 button, you're actually sharing data with Facebook, Twitter or Google. And that's not all. There are hundreds of advertising and data collection companies that... Read More , or criminals attempting to steal your data, the truth is there is always someone or something monitoring your Internet activity and content. Ultimately, the less information we let these groups have the safer we’ll be.


In light of that, we take a look at four browser tools which will help you control your web content more effectively – reviewing what they do along with their relative merits and drawbacks.


Developed by a member of the Mozilla Security Group, NoScript is an open-source extension that works on all Mozilla-based browsers; it’s one of many tools that can make Firefox more secure Everything You Need to Make Firefox Private & Secure When using Firefox - or any web browser for that matter - one of the best practices you can develop is to always be mindful of your privacy and security. You never know when someone... Read More .


The add-on works on the principle that most browser attacks require a form of scripting (programming code which allows the tasks to be automatically executed rather than needing human input) and, therefore, blocks JavaScript, Java, Flash, Silverlight, and other active plugins by default. Users have to manually configure a whitelist of sites they trust, though the developer does offer a very short default list which includes sites such as PayPal, Yahoo, YouTube, Gmail, and MSN.


  • Easy to operate: JavaScript, Java and other plugins can be easily enabled for sites that you trust with a simple left-click on the status bar icon.
  • Unknown threats: The extension can help prevent the exploitation of security vulnerabilities that have not yet been discovered because it doesn’t rely on a virus/vulnerability database.
  • Reduced bandwidth: Most adverts are rich graphics that are served by JavaScript. As a result of NoScript blocking JavaScript, research suggests bandwidth consumption can be reduced by as much as 40 percent.
  • Prevents ‘Clickjacking’: Clickjacking is the process where buttons on a page are either hidden or disguised as something else. The extension’s ClearClick feature prevents users accidentally clicking on them.
  • Prevent cross-site attacks: NoScript’s anti-XSS functionality will prevent most instances of cross-site scripting attacks.


  • Time consuming: When you first start using NoScript, you’ll need to take an active role in setting up and managing it or else you’ll find lots of content from your favourite sites will be inaccessible.
  • Possible reduced performance: Whilst not a common criticism, there are reports on various forums that users with very long blacklists have seen the app become sluggish. This issue will not affect most users.


Ghostery is available on Chrome, Firefox, Opera, and Safari, as well as the Android and iOS mobile platforms.


The app claims that it wants to help you become a web detective, and it follows through with its ambition by alerting you to a broad range of threats, including cookies, web bugs (objects embedded in a webpage that allow your browsing habits to be collected), and tracking pixels/beacons – along with giving you access to a comprehensive list of 1,900 ad networks and behavioural data providers.

It works by monitoring all web servers that are being called from a particular web page and matching those with a library of data collection tools. If a match is found, the app will alert the user – if the user has told Ghostify to block communications with the server the call will not be connected.



  • Better than blocking cookies: The approach taken by Ghostify is better than simply opting-out or blocking cookies. Strategies such as those still allow the browser to communicate with the web server by altering the communication or the response.
  • Several blocking options: The way the app is designed allows its users to block on a tracker-by-tracker basis, a site-by-site basis, or a blend of the two. Blocking can also be paused completely when you deem it appropriate.


  • Ghostrank: Ghostrank is a double-edged sword. On the one hand it’s how the company makes money and ensures it remains free to use. On the other, it is alleged that the data collected is sold to advertisers. The developers defend it by claiming they add their own analysis and sell it to companies in order to help them audit and manage relationships with marketing tools. You can opt-out of Ghostrank if you don’t wish to participate.
  • Loading times: The app does a scan for numerous different page elements each time you load a site – this could lead to an increase in page loading times, especially if your connection isn’t very fast.


Disconnect is an app that works on Windows 7/8, Apple OS X 10.7+, Android 4.0+, and iOS 7.0+.


It is aimed at people who want to have a greater degree of online control over what/how personal information is shared. It offers six main features; safer and faster browsing Why Online Privacy Matters and 5 Ways to Reclaim It Privacy threats are all around us. Today, the impact and dangers of online privacy breaches are major. These few resources explain the pitfalls clearly and concisely. Read More , visualised tracking, anonymous search, customisable VPN location, coordinated privacy icons, and encrypted Internet.

The software works by routing all a user’s traffic through an encrypted tunnel, thus preventing any companies on their filter list from communicating with you, and making all your online habits completely anonymous.



  • Data not sold: Unlike Ghostery, Disconnect have explicitly stated they do not collect, sell, or otherwise take advantage of your personal data. They make their money by charging the user, meaning the full-featured service incurs a cost. Desktop users can pay what they feel to be appropriate, mobile users have a free or premium option. You can try before you buy.
  • Privacy icons: The icons are one of the best features of Disconnect from user-experience standpoint. Not only are they easy to understand, but they are consistent across all sites, allowing you to easily and effectively compare the merits of different sites. They appear in both search results and the browser icon, and can be customised.



Policeman tries to give its users a more holistic approach to privacy and security, allowing you to create rules based on both the domain visited and the type of resource being used. It only works on Mozilla-based browsers. If you’re a Chrome user check out our list of the top 8 Chrome security plugins The Top 8+ Security & Privacy Extensions For The Chrome Browser Google’s Chrome Web Store hosts many extensions that can protect your security and privacy while using Chrome. Whether you want to block JavaScript, plug-ins, cookies and tracking scripts or force websites to encrypt your traffic,... Read More for more options.




  • Advanced: Users who are skilled in the field of privacy and security will have no problem deciphering the app. It is arguably the most customisable of all the options in this article, with rules based on content type allowing you to micro-manage your online content.


  • Support: This is a much smaller project than the three aforementioned suggestions. It means the app doesn’t have the same amount of supporting literature and the developer may not be able to upgrade the project as quickly.
  • Complexity: The app is the most user-intensive of all the options. The developer is very explicit that many sites will not work at all until the necessary content has been permitted.

Your Favourites?

Which privacy apps, extensions, and plugins are your favourites? Have you got any experience with the ones we selected? Let us know your thoughts and feedback in the comments section below.

Related topics: Browser Extensions, Clickjacking, Online Privacy, Online Security.

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  1. soundwave100
    May 31, 2015 at 5:57 am

    Hi Dan, I want to block trackers, but I also want to support my favourite websites. Is there any way to enable ads but block tracking?

  2. Doc
    February 2, 2015 at 8:53 pm

    I've been using Adblock Edge, Disconnect, and NoScript successfully (I started using NoScript the moment a drive-by download of a Fake Antivirus hit me, back in my XP days) with the latest stable version of Firefox, and aside from there being *no* manual for Disconnect (is it blocking the *green* or the *grey* items?), have had little problems outside of sending gifts in a couple of Facebook games.

    • Daniel Price
      February 10, 2015 at 6:09 pm

      Hi Doc,

      I believe it is blocking the grey.

      Seems like you were ahead of the curve re: privacy and security!


  3. Robert G.
    February 1, 2015 at 1:27 pm

    My favorite one is No Script. I tried Policeman (extension) and it's complicated.

    My browser is Firefox.

    • Daniel Price
      February 10, 2015 at 6:08 pm

      Yes, I am not a huge fan of Policeman either. I only included it for the sake of comparing and contrasting...


  4. ReadandShare
    January 31, 2015 at 8:34 pm

    NoScript, NotScript, et. al.

    Chrome browser provides the following control options for Plug-In's:
    o run automatically
    o click to play
    o block by default (can manually override)

    Chrome also provides a white list and black list where plug-in's either run automatically or are blocked automatically.

    Am I correct that the above combined renders NoScript (and equivalent extensions) unnecessary?

    • Daniel Price
      February 10, 2015 at 6:07 pm

      Maybe, but some people just don't trust Google...!!


    • Ben
      February 25, 2015 at 2:28 am

      No(t)Script are pretty much useless anyways against malicious plugin content (same goes for the options you mention); you either unblock all or nothing. Malicious advertisements (e.g fake flash updates) appear on popular, trusted sites like Reuters and CNN.

      Reliable content filtering comes from products that employ heuristic analysis. A program called BFilter, which is free and open-source, and your anti-virus program renders all this stuff unnecessary.

  5. michel
    January 31, 2015 at 8:13 pm

    Uh, I have Disconnect installed as an extension in both Chrome and Firefox. It isn't a separately installed program.

    • Daniel Price
      February 10, 2015 at 6:07 pm

      You are right, of course, but as far as I'm aware the separate program is more full-featured.


  6. ReadandShare
    January 31, 2015 at 8:09 pm

    I use Adblock, Ghostery, and ClicknClean on my Chrome browser -- to take care of ads, tracking, and cookies respectively.

    • Daniel Price
      February 10, 2015 at 6:06 pm

      I've not used Clicknclean, would you recommend it?