User JavaScript and CSS
User JavaScript and CSS on any website
User JavaScript and CSS Extension
User JavaScript and CSS is a Chrome extension that allows users to inject their own JavaScript and CSS rules to any website. It features instant execution, custom libs include, and URL masking for use on multiple pages. With User JavaScript and CSS, users can customize their browsing experience by applying custom scripts and styles to websites.
Extension stats
Risk impact: High risk impact 
Risk likelihood:
Manifest version: 3
Permissions:
- storage
- tabs
- unlimitedStorage
- userScripts
- scripting
Host permissions:
- http://*/
- https://*/
Size: 1.70M
Email: sq*****@yandex.ru
Ranking
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Not available on Android
Not available on Firefox
Not available on Edge
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Extension summary
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
Documentation: https://tenrabbits.github.io/user-js-css-docs/
Change log: Version 3.0.6 beta
try catchwrapper removed- CSS injection improved
- added button to save converted URL
User reviews
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spammy, or outdated.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
- User-friendly interface
- Customizable for personal needs
- Allows toggling between rules on demand
- Effective for styling adjustments
- Fast and reliable functionality
Cons
- Code jumbles when saving
- Inconsistent behavior with updates
- Desire for a real-time editing mode
- Issues with code completion feature
- Problems with functioning on specific browsers
Most mentioned
- Simple and easy to use
- Toggle feature for enabling rules
- Issues with saves jumbled code
- Desire for improved editing options
- Problems after updates
User reviews
超级好用！！！
by 
Yan Corps, 2025-01-17
Yan Corps, 2025-01-17Amazing Extension
by 
NOCauseEffect, 2025-01-14
NOCauseEffect, 2025-01-14Very good extension, respect!
by 
Anastasios Sar., 2025-01-11
Anastasios Sar., 2025-01-11Extension safety
Risk impact
User JavaScript and CSS requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk likelihood
User JavaScript and CSS has earned a fairly good reputation and likely can be trusted.
Upgrade to see risk analysis details
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