Disable Window Eval

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Disable window.eval() from all of your websites and boost your online security! The Window.eval() function is disabled on all webpages by the Disable Window Eval add-on. When the input argument’s type is String, it also disables similar methods of evaluating as eval().

Disable Window Eval

Use reason to Disable Window Eval extension

  • A test page can be found in the toolbar, which has several buttons, including a pop-up with a variety of options.
  • The extension is always on and can’t be disabled.
  • It’s a tiny add-on with little RAM and CPU utilization.
  • On all operating systems, the extension is compatible with Firefox, Chrome, and Opera.


1. Disable Window Eval extension?

You can block window.eval() and other similar methods in your browser with this extension. These functions, if used incorrectly, might be detrimental, resulting in cross-site scripting attacks on some sites. As a result, it is always a good idea to prevent or restrict the use of these features. Eval is a hazardous procedure since it may execute any code that is passed to it with the caller’s privilege. If utilized incorrectly, other similar techniques such as – new Function() – can have the same issue. Furthermore, when the input argument is of type – String , window.setTimeout() and window.setInterval() can be dangerous and have the same security flaw as eval. The Disable Window Eval add-on can delete all four of these approaches and perhaps increase your online security. Please keep in mind that this add-on does not have an ON/OFF switch or a whitelisting function due to safety concerns and the nature of the software.

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2. How do I use this add-on?

Simply install the extension in your browser and begin surfing the web. This plugin is always on and cannot be disabled via a toolbar alert popup. However, you may completely turn off the plugin by going to your browser’s extensions page. Please keep in mind that because eval and other similar approaches are disabled while this add-on is inactive, some websites may display bugs or problems when loading. As a result, please temporarily disable the add-on while visiting these sites or utilize alternative browsing tools for specific sites with issues with this add-on.

3. What happens when a site uses eval excessively?

When a website utilizes eval and similar approaches (described above) in an unsafe manner, it may induce XSS assaults in your browser. Cross-site scripting or XSS is a kind of web security flaw that occurs when attackers inject malicious scripts into websites and execute them via eval if the website lacks proper Security. As a result, it’s critical to mitigating these sorts of flaws as soon as possible. This issue may be addressed in a number of ways, one of which is to restrict or entirely eliminate these techniques. This extension does just that. Naturally, certain websites may become inaccessible when this plugin is enabled, but it can also potentially improve your online security while you’re surfing the web. Please read this article on cross-site scripting to learn more about XSS threats.

4. Is it possible to exclude a website from this extension?

There is no method to whitelist a website with this extension at the moment. When the add-on is enabled, eval and similar methods are prohibited in all websites.

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5. How do I turn the add-on On or Off?

Unfortunately, due to the nature of this add-on, it does not have an ON/OFF switch.

6. Is there any way to customize this plugin?

This add-on has no configuration settings or options. All of the controls are exposed in a toolbar pop-up UI.

7. Should I keep the extension installed all of the time?

Yes, it is suggested to keep the extension enabled as long as you have no difficulties when surfing. If a specific website isn’t loading properly, please remove it from the extensions menu in your browser. After you’ve finished your research, reactivate the add-on.

8. Where can I find the Disable Window Eval privacy policy?

Read the privacy statement for this extension here.