CoolStyles - Create Theme for any website Firefox

CoolStyles - Create Theme for any website

Any website can be customised to your colour scheme in a single click with thousands of user styles' gorgeous themes

Features & Capabilities

Make your variant of the web with Stylish:

★ Browse countless topics for probably the most famous sites, including: Google, Youtube, Facebook, Tiktok, Twitter and then some! ★ Modify website background, shading plans, skins, informal organization records, textual styles, and even activitys. ★ You can rapidly create, enable, edit or delete any installed style. ★ Make and offer your own client styles with a large number of individuals utilizing CSS supervisor. ★ Turn into a piece of one of the biggest innovative networks on earth

Make your own theme Assuming you know CSS, become a subject designer - make and offer styles for any famous site.

If you don't know CSS, don't worry, you can visit https://coolstyles.org to create website easily, help you to style without knowing css Significant notes ★ We care about your protection and consequently it is essential to us that you comprehend our information rehearses:

Coolstyles furnishes you with ideas and admittance to important styles for pages you visit, as well as the times each style has been introduced. To empower this help, we gather mysterious perusing information as depicted in our security strategy https://sites.google.com/view/coolstyles-privacy-policy strategy, including: All Host, tabs, and capacity.

The gathered information isn't utilized to distinguish individual clients, and you can constantly switch this programmed information assortment off on the extra choice page.

  • Version: 1.3

Update: Update new interface, easy to use

  • Version 1.4:

fix bug installing style on page coolstyles.org on the first time

🚀 Version 1.5 Update – What's New? We are excited to introduce one of our biggest updates yet! CoolStyles is now more powerful and global than ever.

✨ Personal Theme Creator You are no longer limited to existing styles!

Design your own: Introducing the Custom Theme Editor – a new feature that allows you to create and save personalized themes for any website you love.

Full Control: Tweak colors and styles to perfectly match your eyes and your workspace.

🌍 54 Languages Supported CoolStyles has gone global! To support our users worldwide, we have integrated full localization for 54 countries and languages.

Whether you speak English, Vietnamese, Malayalam, or Norwegian, CoolStyles now speaks your language.

🛠️ Performance & Optimization Optimized the core engine for faster CSS injection.

Improved UI responsiveness in the popup dashboard.

Minor bug fixes to ensure a seamless styling experience.

User Growth & Download Statistics

Manifest V3 Add-on
By:
Coolstyles
Daily users:
37 3
Rating:
5.00
(1)
Version:
1.9.0 Last updated: 2026-03-15
Version code:
6182475
Creation date:
2026-02-21
Risk:
High risk impact Moderate risk likelihood
Permissions:
Host permissions:
  • *://*/*
Content scripts matches:
  • <all_urls>
  • 127.0.0.1
  • coolstyles.org
Size:
451.21KB
Email:
ng*****@gmail.com
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-16
Compare stats and ranking:

Other platforms

Chrome

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:
Coolstyles
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/coolstyles-theme-for-website/
Email:
ng*****@gmail.com
Website:
https://coolstyles.org/page/about

User Reviews

good idea
by Li*****, 2026-03-06
View all user reviews ›

Is CoolStyles - Create Theme for any website 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.

CoolStyles - Create Theme for any website 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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  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
  • Low ******* ****** ** *** ********* ******** **** **************
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.

CoolStyles - Create Theme for any website 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.
  • Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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