uMatrix is an advanced browser extension that functions as a matrix-based firewall for web browsers, giving users fine-grained control over their browser's network connections. This document provides

introduction to uMatrix
https://deepwiki.com/gorhill/uMatrix

gorhill - uMatrix Wiki
https://github.com/gorhill/uMatrix/wiki

umatrix tutorial
https://www.electricmonk.nl/docs/umatrix_tutorial/umatrix_tutorial.html

UMatrix extension usage guide
https://www.wilderssecurity.com/threads/umatrix-extension-usage-guide.399299/

A uMatrix guide for Firefox
https://www.ghacks.net/2017/11/28/a-umatrix-guide-for-firefox/

Dashboard and Settings
https://deepwiki.com/gorhill/uMatrix/3.3-dashboard-and-settings