screenshotCustom Style Script  |  Download Add Custom JavaScript Codes or Styles (CSS) to any Page.

Some of the important features of the Custom Style Script addon are listed below. This is followed by an overview of this addon. This summary contains few words about the addon, its function, and its features. Next is FAQ, this section is useful to get information about how this addon works in your browser. If you couldn't find a specific answer, please fill the bug report form on this page or the contact form on the homepage to let us know about your question. Following the FAQ, is the bug report form. It is designed to collect user feedbacks and bugs about this addon. Users can suggest improvements or feature requests through this form too. The next section is for submitting comments about this addon which uses the Facebook comments plugin. The last section is dedicated to reports submitted through the GitHub website. We hope the information provided on this page, could help you get all the basics you need about this addon and enable you to have a better experience with Custom Style Script.

In short, Custom Style Script customizes the way a webpage looks or behaves, by adding a small bits of JavaScript or CSS code. You can also specify a URL to add the code or add it to all pages. Please check the YouTube tutorial below to get an idea of how this addon works in your browser. If you want to contribute to the developement of this addon, please fork it on GitHub, and push your changes to a named branch. Moreover, you can review all the comments made on GitHub commits.

7 Reasons to Use Custom Style Script

  • Add Custom JavaScript Codes or Styles to any specifi page or all pages.

  • Clicking on the Toolbar icon allows you to disable or enable the addon.

  • Each code item has several options to adjust (see options page for details)

  • You can add several code items and active or inactive them separately.

  • An example of how to add a code is available in the options page.

  • Before adding the code (JS or CSS) please make sure you have validated the code.

  • This addon is available for Google Chrome, Edge, Firefox and Opera.

YouTube Tutorial

This video gives you an idea of how the extension works in your browser.

Matched Content


  • In this fast paced technology controlled era, a website is a backbone a firm can have, in order to prove its online presence in the marketing realm today. People all around the globe are setting up websites every day, and with the revolution in the niche these websites have been introduced in, different websites are being introduced to the online users. A website might look easy and simple from the layout a naked eye sees, but behind all the glitter, a range of different codes have been used to create different sectors of the website. A person with simple computing knowledge may never be able to change the layout of the website, and feature it according to personal interest. However, with the simple change of a few JavaScript or CSS codes, people have the ability to change the layout/functions of any website they want. This is possible with the help of Custom Style Script Addon for your browser.

    Custom Style Script is a convenient multi-browser add-on, which helps users to add small bits of JavaScript and CSS codes, which allows them to change the layout/functions of any website they want. With a simple click on the toolbar icon, users are given the chance to enable or disable this add-on. The user-friendly extension allows you to add several code items and activate or inactivate them separately. Each code item you have been given has several other options you can adjust according to your own needs. Moreover, you are given a sample of how to add the code, in the options page. Above all, the Custom Style Script is extremely light-weight and does not take much CPU usage. We would recommend this add-on to everyone, especially people looking for a way to adjust the layout of a website, according to their own interests.

Frequently Asked Questions

  • 1. Custom Style Script?

    With Custom Style Script you can addAdd Custom JavaScript Codes or Styles to any Page. This way it is easy to customize the way a webpage looks or behaves. You can also specify a URL to add the code or add it to all pages.

  • 2. How does Custom Style Script works?

    In order to start working with Custom Style Script, please open the options page and read the tutorial available at the top of the page.

  • 3. How can I download the source code for Custom Style Script?

    To download the source code for this extension from Chrome Web Store, it is recommended to use Extension Source Downloader. With this addon, you can download the source code as a ZIP or CRX format to your machine. If you want to download the source code from the Firefox addons store, please open the firefox download link (if available) in the Firefox browser and then right-click on the - Add to Firefox - button and select - Save Link As... - item. Choose the destination folder on your machine and then save the file in XPI format. You can then rename the XPI format to a RAR or ZIP file. Some extensions may have a GitHub repo address, which you can use to download the source code as well. But, it may not be the latest version of the addon. Therefore, downloading the source code from the official web stores is the best option as it always gives you the latest version of the addon.

  • 4. What options are available for a custom code?

    There are 9 options available to adjust for a code. Option (1) shows the code number. Option (2) is where you put the desired URL. If you want to include all URLs, simply add (*) to the filed. If you check Option (3), the code will be applied to all domains matching the domain for the given URL. Option (4) applies the code to all URLs whose Tab (or Top level) URL is the domain matching the given URL. If you check Option (5), the code will be added to all frames (iFrame) matching the given URL (or domain if you have checked the domain field). Option (6) is the JavaScript code. Option (7) is the CSS (style) code. Option (8) is to activate or inactivate the code, yellow color indicates an active and gray color indicates an inactive code (clicking the button will swap the colors). Option (9) is to permanently delete a code item.

  • 5. How to disable Custom Style Script?

    In order to disable this addon, there are two options available. First, you can click on the toolbar-icon and disable the addon once the icon color is white. Or you can disable the addon from the browsers extension page.

  • 6. How do I make sure the code (JS or CSS) is valid before adding it to the table?

    In order to check the validity of a code (JS or CSS), please use available free online tools such as liveweave. Once the code is validated, you can add it to the table.

  • 7. Where can I find the privacy policy for Custom Style Script?

    Please read the privacy policy for this extension here.


Reporting Bugs

Your feedback goes a long way towards making this addon even better. With this feedback and bug report form, you can report bugs or suggest features/enhancements for the functionality or performance of this addon. Please note that this form will be sent to the developer(s) of this addon. You will not get an immediate or personal response at the moment. However, the developer(s) may contact you through the email address provided in this form for further clarifications or to request additional information regarding the reported bug(s).

If you want to rate or write a review for this addon in the official webstore, please press the - Rate this addon - button below.

Please enter the name of the extension (addon).

Please enter the current version of the extension.

Please be as specific as possible. Basically, describe what happened, what you were doing when it happened, and why you think it is a problem.

Describe the step-by-step process required to reproduce the issue you are reporting. Be specific when describing these steps by providing as much detail as possible.

Please try to leave a link to a screenshot for the specific bug or error report.

Please enter your operating system.

Please enter your browser and its current vesrion.

Please enter your email address.

Reviews | Discussions

Please note: keep these reviews/discussions clean, and avoid the usage of derogatory or inappropriate language or terminology in references to individuals or groups based on race, national or ethnic origin, color, religion, age, gender, etc. Do not submit bugs in your reviews, use the above bug-report section instead. Also, never post any personal information in these reviews.