screenshotWebsite Theme Manager  |  Download Allows you to change any website's look/theme.

Some of the important features of the Website Theme Manager 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 Website Theme Manager.

In short, Website Theme Manager customizes any website(s) appearance; you can choose your desired style from 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.

8 Reasons to Use Website Theme Manager

  • Enables you to easily manage (add, edit or remove) styles.

  • Enhances your browsing experience by allowing you to customize the way a website looks.

  • By using custom styles (CSS) you can change colors, fonts, and almost all HTML contents within a page; meaning completely redesigning the entire page.

  • In order to add styles, there are two options available (see below for more details).

  • Toolbar icon can easily enable or disable the extension.

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

  • Before adding the style please make sure you have validated the code.

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

YouTube Tutorial

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

Matched Content

Frequently Asked Questions

  • 1. What is Website Theme Manager?

    With Website Theme Manager you can easily add Custom Styles (CSS) to any Page. This way, you can change colors, fonts, and almost all HTML contents within a page.

  • 2. How does Website Theme Manager works?

    Working with Website Theme Manager is very easy. To start, please go to UserStyles ( website, find your desired style and click on "Add this Theme".

  • 3. How can I download the source code for Website Theme Manager?

    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 style?

    There are 6 options available to adjust for a CSS code. Option (1) shows the code number. Option (1) shows the theme number. Option (2) is where you put the Theme Name. Theme name is used to find themes from the memory, to add a name, please use small letters with no space(s). Option (3) is the author name. Option (4) is the CSS (style) code. You can use your own style or styles from UserStyles website collection. Option (5) is to activate or inactivate the theme, blue color indicates an active and gray color indicates an inactive code (clicking the button will swap the colors). Option (6) is to permanently delete a theme item. To add themes automatically, as mentioned above, please visit UserStyles website, find your desired theme and click on "Add This Theme".

  • 5. How to disable Website Theme Manager?

    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 gray. Or you can disable the addon from the browsers extension page.

  • 6. Where do I find themes (styles)?

    You can easily find theme from UserStyles website. Choose any theme you want and click on "Add this theme". The theme will be added to Website Theme Manager options page. From there you can edit, delete or inactivate a theme.


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.

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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.

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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.