Dark theme on the web Not to be confused with dark web. YouTube (Classic) Firefox addon for forcing YouTube Classic mode Stylus theme Google Stylus theme Github Stylus theme (extra list for github.community) Stack Overflow Stylus theme Reddit (old) Reddit Enchancement Suite allows dark theme, also for Old Reddit. If you want to force your browser to use Old Reddit interface (available at old.reddit.com), check out my Redirector List. DuckDuckGo Use this guide Instagram Stylus theme Other sites php.net Firefox tweaks Shadowfox Firefox addons Stylus dark theme Some other tips and links Dark Reader addon for Firefox (repo) My Firefox recommendations My uBlock Origin recommendations Amp2Html - Addon for Firefox to redirect Accelerated Mobile Pages (AMP) to normal pages. FOSS-Android - List of free and open-source alternatives to proprietary Android apps.