User JavaScript and CSS Alternatives

User JavaScript and CSS is described as 'Userscript's and userstyle's — simple extension to inject own JavaScript or CSS rules to any page' and is an app in the development category. There are more than 10 alternatives to User JavaScript and CSS for a variety of platforms, including Google Chrome, Mac, iPhone, iPad and Firefox apps. The best User JavaScript and CSS alternative is Dark Reader, which is both free and Open Source. Other great apps like User JavaScript and CSS are Stylus, Stylebot, Noir and Amino: Live CSS Editor.

User JavaScript and CSS alternatives page was last updated

User JavaScript and CSS

Free • Proprietary

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

More about User JavaScript and CSS

Dark Reader
Is this is a good alternative?
Yes
No
Free • Open Source
iPhone
iPad
Microsoft Edge
Google Chrome
Safari
Thunderbird
Firefox
18 Dark Reader alternatives
This eye-care extension enables night mode creating dark themes for websites on the fly. Dark Reader inverts bright colors making them high contrast and easy to read at night.
- - Dark Reader is the most popular iPhone & iPad alternative to User JavaScript and CSS.
- - Dark Reader is the most popular Open Source & free alternative to User JavaScript and CSS.
Suggest and vote on features
Dark Reader Features
1. Dark ModeDark Reader supports dark mode for comfortable usage in low light conditions.
Browser extension
Zero Set-up time
Themes
Reduce Eyestrain
Safari extension
Stylus
Is this is a good alternative?
Yes
No
Free • Open Source
Google Chrome
Opera
Firefox
Microsoft Edge
Brave
Chromium
Ungoogled Chromium
13 Stylus alternatives
Redesign the web with Stylus, a user styles manager.
Suggest and vote on features
Stylus Features
1. No TrackingStylus will not track you or use your personal data.
Customizable
Configurable
Bug reporting
Opera extension
Themes
Stylebot
Is this is a good alternative?
Yes
No
Free • Open Source
Online
Google Chrome
10 Stylebot alternatives
Change the appearance of websites instantly by applying a easy to use interface for changing the CSS. Preview and install styles created by users for your favorite websites.
- - Stylebot is the most popular Web-based alternative to User JavaScript and CSS.
Suggest and vote on features
Stylebot Features
Configurable
Live css editing
Multiple Font Colors
Noir
Is this is a good alternative?
Yes
No
Paid • Proprietary
iPhone
iPad
18 Noir alternatives
Noir is a Safari extension for iOS that automatically adds a dark mode to every website you visit.
- - Noir is the most popular commercial alternative to User JavaScript and CSS.
Suggest and vote on features
Noir Features
1. Dark ModeNoir supports dark mode for comfortable usage in low light conditions.
Safari extension
Amino: Live CSS Editor
Is this is a good alternative?
Yes
No
Freemium • Proprietary
Online
Google Chrome
8 Amino: Live CSS Editor alternatives
Make visual changes to any website with CSS and see changes in real time. Sync, edit, and export your custom style sheets.
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Amino: Live CSS Editor Features
Support for Javascript
Live css editing
Man in the Middle
Is this is a good alternative?
Yes
No
Free • Open Source
Userscript Manager
Mac
Windows
Linux
Online
UC Browser
CentBrowser
Google Chrome
Yandex.Browser
Opera
Chromium
Firefox
15 Man in the Middle alternatives
Modify requests, inject JavaScript and CSS into pages.
- - Man in the Middle is the most popular Windows, Mac & Linux alternative to User JavaScript and CSS.
Man in the Middle has no features, suggest some!
xStyle
Is this is a good alternative?
Yes
No
Free • Open Source
Online
Chrome OS
Google Chrome
Firefox
10 xStyle alternatives
A Chinese Developed Theme Manager. based on the source code of Stylish-for-Chrome 1.7.0.
xStyle has no features, suggest some!
superUserContent
Is this is a good alternative?
Yes
No
Free • Open Source
Mac
Windows
Linux
Firefox
8 superUserContent alternatives
Dynamically load stylesheets in Firefox from plaintext files in your profile.

superUserContent is a simple Firefox plugin that creates a new directory in your profile's chrome directory called userContent.css.d. You can use this directory as a runtime path for css styleshee.
Suggest and vote on features
superUserContent Features
Themes
Configurable
Makeover - Custom CSS
Is this is a good alternative?
Yes
No
Free • Open Source
iPhone
iPad
10 Makeover - Custom CSS alternatives
Makeover lets you change the appearance and behavior of web pages with CSS and JavaScript. To use it, you go to a web page you want to customize, tap the Makeover icon, and paste the code into the text field.
Suggest and vote on features
Makeover - Custom CSS Features
Safari extension
Neo Noir
Is this is a good alternative?
Yes
No
Free • Proprietary
Mac
iPhone
iPad
18 Neo Noir alternatives
This Safari extension offers dark mode browsing in Safari. Neo Noir night mode adds a beautiful theme to every page you visit.
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Neo Noir Features
1. Dark ModeNeo Noir supports dark mode for comfortable usage in low light conditions.
Safari extension
Cascadea
Is this is a good alternative?
Yes
No
Paid • Proprietary
Mac
Safari
10 Cascadea alternatives
Introducing Cascadea, the first custom style manager designed as a Safari App Extension and native macOS app. Cascadea makes it easy to install custom styles that change the look and feel of any website you want.
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Cascadea Features
Safari extension
Themes
Browser extension
Configurable
Customizable
Dark Mode for Safari
Is this is a good alternative?
Yes
No
Paid • Proprietary
Mac
iPhone
iPad
Safari
19 Dark Mode for Safari alternatives
Dark Mode makes your browser more comfortable, enjoyable and cool by changing the colour scheme to make web pages easier to read. Works especially well for people working during the night or in low light environments or when you want to match your browser with the new Mojave...
Suggest and vote on features
Dark Mode for Safari Features
1. Dark ModeDark Mode for Safari supports dark mode for comfortable usage in low light conditions.
Safari extension