How do I disable JavaScript in Firefox

JavaScript is a programming language that can be found on the internet on a regular basis. It fulfills a wide variety of large and small requirements. What many do not know, however, is that JavaScript is relatively rarely updated. Its use is correspondingly risky. We will show you how to deactivate the source of risk in Firefox.

You are currently comfortably surfing a page when suddenly the browser window changes. Otherwise, the website behaves "unusually" strangely. Often JavaScript is involved in the situation. Once JavaScript has been activated in the browser, a website contaminated with malicious code can cause considerable damage. JavaScript can be deactivated very easily.

What do I need to know before deactivating?

Before you deactivate JavaScript in Firefox, you should be clear about the consequences of this. JavaScript is a popular programming language that is mainly used by reputable websites.

If you deactivate JavaScript, this can lead to certain functionalities no longer being available. If you deactivate JavaScript and find that you can no longer use your favorite websites undisturbed, you will have to consider alternatives.

Java or JavaScript

First a brief clarification: Java is not JavaScript. Java is a software package that you can install on your PC. This is also more in the focus of any critical security gaps.

JavaScript, in turn, is usually built into your browser. This does not rule out security holes, but it does reduce them, as most browser manufacturers provide updates on a regular basis.

Why do you need JavaScript in the browser?

You need JavaScript in the browser to provide certain functionalities. Changing the size of the browser window is only one of many possibilities.

Above all, JavaScript makes it possible to design websites to be functional. For example, individual cookies can be set quickly and easily in the background. Or pending graphics are only invited when they are really supposed to be displayed.

How do I turn off JavaScript in Firefox?

To deactivate JavaScript in Firefox, you must follow the instructions below step by step. First start your Firefox browser and then proceed as follows:

  • As soon as Firefox has started, click on "Tools" in the top main menu and then on "Settings".
  • As soon as the new window has opened, you will see some tabs in the upper area. By default, the "General" tab should be selected here.
  • Now select the “Content” section under the tabs.
  • In the upper area you will find three checkbox options. There you will find "Activate JavaScript". A tick may already be ticked here. You can remove this tick with a click. Now you just have to click on "OK" and JavaScript is deactivated in your Firefox.

Do I have to completely deactivate JavaScript right away?

It depends on how safe you want to be. In principle, you can only deactivate the most annoying elements. To do this, click on the "Advanced" button next to Deactivate JavaScript in the "Contents" tab mentioned above. Now you can opt out of some of the most disruptive JavaScript actions.

For example, even with JavaScript enabled, it is possible to prevent a website from changing the size of the browser window.

How can I reduce the risk?

Basically, JavaScript as well as Java is risky. However, JavaScript security gaps are usually closed by updates from the browser manufacturer. A browser that is always up-to-date should therefore be standard on the PC.

If you do not want to deactivate JavaScript, the only way to reduce the risk of the scripting language to some extent is to always have the latest version of your browser installed. Current browsers also only execute JavaScript in a sandbox, which further reduces any risks. In addition, there are some helpful add-ons such as NoScript, which, however, are very difficult to use for laypeople.

In addition, there is still a risk from Java itself. To find out which version is installed on your PC, simply go to the Java website and select the “Download” menu item.

There you can see which Java version is currently up-to-date. Below the large red button “Free Java Download” you can click “Do I already have Java?”. A check then takes place to determine whether the latest Java version is installed on your PC. If not, you have the option of downloading the latest Java version immediately afterwards.