Custom Style

Name: Custom Style
Rating: 4.3333 (3 reviews)
Author: cywu

By: cywu

Very light-weight prototype add-on to apply custom CSS styling to websites.

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Install

Features & Capabilities

Very light-weight add-on to inject CSS to decorate the page as you want. It can hide annoying elements like fixed headers or make them scroll away as you scroll. No rules are included by default. Go to the Options page from the add-on manager and add rules. Example: On site www.example.com, set rule: body{border: 5px solid yellow !important;}. If you plan to hide elements on a page, you probably should consider Ublock Origin instead.

User Growth & Download Statistics

Add-on

By:

cywu

Daily users:

7 1

Rating:

4.33

(3)

Version:

0.4 Last updated: 2019-05-31

Version code:

4456559

Creation date:

2019-05-09

Risk:

Permissions:

<all_urls>
tabs
storage

Size:

11.97KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-16

Compare stats and ranking:

Ranking

# 36,095 ▲ 2,028

Other rankings

#71 in style keyword 32 ▲ 9#126 in custom feed keyword 21 ▲ 10#127 in custom font keyword 29 ▲ 8#135 in customer keyword 12 ▲ 10

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:

cywu

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/custom-style/

Website:

https://github.com/cywu/custard

User Reviews

Thanks for the tip to right click on the 'Add to Firefox' button, for downloading the code to view before installing!! It works great! {visibility: hidden !important;} is a great way to get rid of junk. Just don't make the mistake of putting 2 separate entries for the same web site. If you put website.com in the settings in 2 locations it won't work. I wish Mozilla would have let me know that this had been replied to. I would have responded sooner. Wayne@WayneSallee.com

by Wa*****, 2020-04-17

Просто и лаконично. Правда не сразу понял, что в настройках именно плагина нужно вносить свои параметры CSS. Разобрался - работает! :-)

by Fi*****, 2019-09-22

A better look for hostname (css name) & css hidden until i double click or edit would be better so we could have css's line by line..

by de*****, 2019-07-24

View all user reviews ›

Is Custom Style 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 requires some sensitive permissions that could impact your browser and data security. 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.

Custom Style has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

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