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 a user styles manager in the development category. There are more than 10 alternatives to User JavaScript and CSS for a variety of platforms, including Mac, Google Chrome, iPhone, iPad and Mozilla Firefox apps. The best User JavaScript and CSS alternative is Stylus, which is both free and Open Source. Other great apps like User JavaScript and CSS are Noir, Stylebot, xStyle and Amino: Live CSS Editor.
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.
Dark Mode makes your browser more comfortable, enjoyable and cool by changing the colour scheme to make web pages easier to read.
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