A simple userscript should do the trick instead of HN changing the URL. var nitterUrl = window.location.toString().replace('twitter.com', 'nitter.net');

A simple userscript should do the trick instead of HN changing the URL. var nitterUrl = window.location.toString().replace('twitter.com', 'nitter.net'); window.location.replace(nitterUrl); Though if you want to be sure you never send a single packet to Twitter, you'll have to make a script that operates on all sites and rewrites URLs in the anchor tags. Edit: Just saw someone mention this extension which could be a better option https://github.com/SimonBrazell/privacy-redirect https://github.com/SimonBrazell/privacy-redirect