User JavaScript and CSS

User JavaScript and CSS on any website

What is User JavaScript and CSS?

"User JavaScript and CSS" is a versatile Chrome extension that allows users to inject their own JavaScript or CSS directives into any webpage. This tool is perfect for web developers, power users, or anyone looking to personalize their web experience. With features like instant script execution, custom libraries inclusion, and URL-specific rule application, the extension makes it easy to enhance or alter the functionality and style of websites. The update log indicates ongoing improvements, including a revamped UI, support for SASS, and the integration of a Prettier formatter.

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Stats

By: tenRabbits

View on Chrome Web Store

Users: 100,000+

Rating: 4.80 (491) ▼ 0.01

Version: 3.0.3 (Last updated: 2024-06-07)

Creation date: 2020-05-08

Risk impact: High risk impact

Risk likelihood: Very low risk likelihood

Manifest version: 3

Permissions:

storage
tabs
unlimitedStorage
userScripts
scripting

Host permissions:

http://*/
https://*/

Size: 1.70M

Email: sq*****@yandex.ru

Stats date:

Chrome-Stats Rank

# 1928 ▲ 13

Other rankings

#27 in Developer Tools ▲ 1

#1 in javascript keyword 44 ▲ 1

#10 in css editor keyword 29

#13 in jquery keyword 16

#36 in inject keyword 7 ▲ 1

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Other platforms

Not available on Firefox

Not available on Edge

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Summary

Analyze keywords

Userscript's and userstyle's — simple extension to inject own JavaScript or CSS rules to any page.

Features:

Instant execution
Custom libs include
URL masking allows use one script or CSS on many pages

Change log:

Version 3.0.3 beta

modules are now in the same scope
CSS injection improvement
and other minor fixes

Version 3.0.2 beta

User reviews

User reviews summary

These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.

Pros

Custom user stylesheets and scripts
Useful for web development and customization
Clear and visible page structure for front-end development
Ability to rapidly develop tests locally
Improved UI and SCSS support

Cons

Some issues with comments in CSS and JS
Occasional cursor jumping during code input
Lack of information about the project
Limited support for iframes

Most mentioned

Custom user stylesheets and scripts
UI and SCSS support
Improvements for front-end development
Issues with comments in CSS and JS

Recent reviews

faced the same issue (css not working) after the update, hope it can be fixed as soon as possible I had used this extension since 2019, it's my favourite extension to adjust / improve ui / ux for poor design of some website ----------- Edited: Thanks for the fast response, I had sent you the feedback via email

Ch Kwang, 2024-06-07

Great extension but not too much customization. Suggestion for developer: - add possibility to share your piece of code with others (ability to install my code for other users); - add possibility to create custom snippets in editor (for now autocomplete works not as well as I want), so this feature will fix it; - add One Dark Theme, idk why this theme is not added, is the most popular theme in VS Code, Jetbrains editors... - can't choose editor font family But in general it's ok, good job!

Dan Rotaru, 2024-03-22

Ch Kwang, 2024-06-07

View all user reviews

Safety

Risk impact

User JavaScript and CSS is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this extension. Review carefully before installing. We recommend that you only install User JavaScript and CSS if you trust the publisher.