User JavaScript and CSS Alternatives

    User JavaScript and CSS is described as 'on any website' 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 Mac, Google Chrome, Firefox, Windows and Linux. The best alternative is Dark Reader, which is both free and Open Source. Other great apps like User JavaScript and CSS are Stylus (Free, Open Source), Stylebot (Free, Open Source), FreeStylerWs (Free) and Amino: Live CSS Editor (Free).

    This page was last updated Sep 27, 2021

    1. 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. You can adjust brightness, contrast, sepia filter, dark mode, font settings and ignore-list.
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    2. Redesign the web with Stylus, a user styles manager.
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    3. 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.
    4. Styles and skins for all popular sites in the web FreeStyler is a browser add-on that has everything you might need to style up websites you visit according to your taste. It provides a great number of ready-to-use styles with convenient system of managing them.
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    5. Make visual changes to any website with CSS and see changes in real time. Sync, edit, and export your custom style sheets. - Customize websites with CSS by creating your own user style sheets. Customize page appearance, fix rendering bugs, make the web what you want it to be.
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      • FreeOpen Source
      • Online
      • Chrome OS
      • Google Chrome
      • Firefox
      A Chinese Developed Theme Manager. based on the source code of Stylish-for-Chrome 1.7.0. Restyle the web with xStyle, a user styles manager. With xStyle you can install themes & skins for many sites and create your own.
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    6. Dynamically load stylesheets in Firefox from plaintext files in your profile.
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • Online
      • UC Browser
      • CentBrowser
      • Google Chrome
      • Yandex.Browser
      • Opera
      • Chromium
      • Firefox
      Firefox Extension: Man in the Middle

      NOTE: Some features in the compatible version for Chromium browsers doesn't work. See https://github.com/dangkyokhoang/Man-in-the-Middle/projects/1#card-15622712 for more.
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    7. Noir is a Safari extension that automatically adds a dark mode to every website you visit. It makes browsing the web at night so much better. With Noir, you won’t be blinded by bright websites ever again.
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    8. 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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    Showing 10 of 11 alternatives