Stylus (browser extension)


Stylus is a user style manager forked from Stylish that can change the appearance of web pages in a user's browser without changing their content by including user-supplied cascading style sheets with those supplied by the web site itself. The Stylus browser extension includes tools with which to write user styles, and can install user styles written by other users through the userstyles.org website or by importing a CSS or UserCSS file. As of March 2020, Stylus has over 300,000 users on Google Chrome and over 90,000 users on Firefox.
Stylus was forked from Stylish in 2017 after Stylish was bought by the analytics company SimilarWeb and telemetry and data collection was introduced into the extension. The intent of the fork was to remove all telemetry and analytics collection from the extension, and serve as a more privacy-oriented and user-friendly solution for users and style creators.