Custom Style Script

Add Custom JavaScript (JS) Code or Styles (CSS) to any page.

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Custom Style Script is a powerful Chrome extension that lets you personalize the appearance and behavior of any webpage. With this tool, you can inject custom JavaScript and CSS code either on specific pages or universally across all sites you visit.

Key features include toggling the extension on and off via the toolbar icon, managing multiple code snippets with individual activation controls, and support for adding external JS or CSS libraries through URLs. The extension provides an options page detailing how to add and validate your code snippets to ensure seamless customization. For any issues or feature requests, users can visit the extension's homepage and submit bug reports.

By:: Grephy
Users:: 10,000+
Rating:: 4.37

(38)
Version:: 0.1.7 (Last updated: 2025-04-08)
Creation date:: 2020-04-21
Risk:: Moderate risk impact Low risk likelihood
Permissions:: storage
scripting
Host permissions:: <all_urls>
Size:: 51.56K
Email:: gr*****@gmail.com
Full description:: See detailed description
Source:: Chrome Web Store
Updated:: 18 hours ago

Ranking

# 8,025 ▼ 291

Other rankings

#695 in Developer Tools ▼ 1

#3 in script keyword 25

#4 in style keyword 30 ▲ 1

#91 in javascript keyword 44 ▲ 3

#151 in options keyword 24 ▲ 35

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Other platforms

Custom Style Script (v0.1.7)

2,353+ 3.88

(68)

Custom Style Script (v0.1.7)

8,020+ 4.20

(16)

User reviews

Users find Custom Style Script to be a lightweight and effective extension for injecting CSS and JavaScript to customize websites. It is appreciated especially by developers for enhancing page functionality and appearance. However, multiple reviews mention usability issues including disappearing rules, limited domain matching flexibility, lack of import/export and sync options, and interface problems when handling multiple scripts. Despite these drawbacks, it remains a highly recommended tool for customizing web experiences.

Pros

Allows injection of custom CSS and JavaScript into web pages to modify appearance and behavior.
Lightweight and simple to use.
Effective for removing unwanted elements or adding features to sites, improving user experience.
Highly praised by developers for its customization capabilities.

Cons

Occasional issues where set rules or styles disappear unexpectedly.
Lack of features like export/import of settings and settings synchronization.
Some domain matching limitations, requiring exact matches rather than substring matches.
Usability issues when adding multiple scripts, such as inability to scroll extension window.
Occasional need to disable and enable the extension to restore functionality.

Recent reviews

It doesn't work on youtube.com now. It worked before. It shows the following exception: TypeError: Failed to set the 'src' property on 'HTMLScriptElement': This document requires 'TrustedScriptURL' assignment.

red rain, 2024-08-08

I'm using it very well, and it's an excellent app. One thing I wish for is the ability to use regular expressions in the address field.

정영식, 2024-05-19

Really nice lightweight one.

Moo Scree, 2024-02-20

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Extension safety

Risk impact

Custom Style Script 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

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

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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