Custom Style Manager

Name: Custom Style Manager
Rating: 2.6667 (3 reviews)
Author: Halil Can

Custom Style Manager allows domain-level CSS styling for any website you visit. Your changes will sync across all of your logged-in Firefox browsers.

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Install

Features & Capabilities

Currently, Custom Style Manager allows you to make styling changes to the active domain through the editor available in the Firefox Toolbar. Your changes will be synced across all compatible logged in Firefox browsers.

I made this add-on primarily because I wanted the ability to easily and permanently change the look and feel of websites whenever I might want to. If you have some CSS literacy and occasionally feel the same, I hope you will find it useful. CSM is fully open source; if you are the kind of person who might find some use in it, then you might be the kind of person to improve it at https://github.com/HalilCan/customStyleManager.

User Growth & Download Statistics

Add-on

By:

Halil Can

Daily users:

Rating:

2.67

(3)

Version:

1.0.3 Last updated: 2020-08-05

Version code:

5076474

Creation date:

2020-08-05

Risk:

Permissions:

Content scripts matches:

<all_urls>

Size:

112.60KB

Email:

cu*****@outlook.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-15

Compare stats and ranking:

Ranking

# 50,151 ▼ 326

Other rankings

#153 in style keyword 32 #204 in custom feed keyword 21 ▼ 4#206 in custom font keyword 29 ▼ 4#217 in customer keyword 12 ▼ 4

For Developers

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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:

Halil Can

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/customstylemanager/

Email:

cu*****@outlook.com

Website:

https://github.com/HalilCan/customStyleManager

Is Custom Style 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.

Custom Style Manager requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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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.

Custom Style Manager is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

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