Website Theme Manager

Name: Website Theme Manager
Rating: 2.5 (4 reviews)
Author: Milen

By: Milen

Allows you to change any website's look; choose your desired style from userstyles.org

Download

Install

Features & Capabilities

Website Theme Manager customizes a website(s) appearance; you can choose your desired style from "userstyles.org" website or write your own.

Note #1: "Website Theme Manager" addon is NOT affiliated with "userstyles.org" website at all. But, users can choose desired styles available in "userstyles.org" and use them with this addon.

Some features:

Enables you to easily manage (add, edit or remove) styles.
Enhances your browsing experience by allowing you to customize the way a website look.
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: a. writing your custom style (css) or b. adding it from userstyles.org site. Once you install the addon, please visit userstyles.org and find your desired theme, then click on "Add this Theme" (appears only after you install Website Theme Manager). The theme will be automatically added to the extension's options page, where you can easily edit, remove or inactivate it.
Toolbar icon can easily enable or disable the extension.
An example of how to add a style is available in the options page (top section).

Note #2: in order to report Bugs, please visit add-on's Homepage and fill the bug report form.

User Growth & Download Statistics

Add-on

By:

Milen

Daily users:

Rating:

2.50

(4)

Version:

0.1.9 Last updated: 2026-01-25

Version code:

6130771

Creation date:

2017-04-05

Risk:

Permissions:

Host permissions:

*://*/*

Content scripts matches:

*
*.userstyles.org

Size:

56.50KB

Email:

mi*****@yandex.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-16

Compare stats and ranking:

Ranking

# 41,305 ▼ 252

Other rankings

#6 in website usage keyword 67 #140 in website keyword 69 ▼ 3

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Milen

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/website-theme-manager/

Email:

mi*****@yandex.com

Website:

http://mybrowseraddon.com/website-theme-manager.html

Permission Change History

2025-03-15: Version 0.1.5 → 0.1.8

Add Host permissions: *://*/*

Remove Permissions: tabs <all_urls>

User Reviews

by 远离*****, 2025-04-21

by 退出*****, 2025-03-20

by Ra*****, 2021-07-26

View all user reviews ›

Is Website Theme Manager Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Website Theme Manager requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Website Theme Manager may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Medium **** ********* *** *** **** *******
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