To easy understand what i am saying, i will give you this example, you visit domain.com but on this page there are other things from external domains other than domain.com that firefox fetches/connects to - cdn.blabla.com; third-party.socialwebsites.com, etc. What i want, is to simply not connect to any other domain except what i typed in url bar. I understand it can break pages but i dont care.
A while ago, setting permission.default.images to 2 somehow worked and stopped loading of external content. Disabling prefetch/preconnect/predict/predictor does nothing.
p.s. i dont want to use extensions, only about config.
This simply won’t work.
domain.com sends you an HTML, which is empty. The HTML defined a
<style>tag which your browser will fetch from cdn.com. Do you want to block it? Cool, no CSS for you.It also defined a
<script>tag which your browser will fetch the React library from cdn.com. Do you want to block it? Cool, no content for you.The whole page is just one
<div id="root"></div>.