Nitter Auto Theme Cookie

Automatically set theme cookie and URL param on Nitter

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name     Nitter Auto Theme Cookie
// @description Automatically set theme cookie and URL param on Nitter
// @version  1.1.0
// @include *nitter*
// @include *xcancel*
// @grant none
// @namespace https://github.com/rorycaputo
// @license GPL-3.0-or-later; http://www.gnu.org/licenses/gpl-3.0.txt
// @homepageURL https://github.com/rorycaputo
// @icon https://nitter.poast.org/favicon-32x32.png
// ==/UserScript==

(
  function() {
    'use strict';
    var themeName = 'theme'
    var themeValue = 'Auto'
    var paramAbsent=false
    var cookieAbsent=false
    var themeChanged=false
    var url

    if ('URL' in window) {
      url = new URL(window.location);
      if(url.searchParams.get(themeName, themeValue) === null) {
        paramAbsent=true
      }
    }
    if (document.cookie.indexOf(themeName) == -1 ) {
      cookieAbsent=true
    }

    if (paramAbsent) {
      url.searchParams.set(themeName, themeValue);
      themeChanged=true
    }

    if(cookieAbsent) {
      document.cookie = `${themeName}=${themeValue}`;
      themeChanged=true
    }

    if(themeChanged) {
      window.location = url;
    }
  }
)();


  // {{{ changelog :

  // [2026-01-05 Mon] Set URL param and cookie

  // [2025-11-11 Tue] Hello

  // }}}

  // {{{ contact :

  // }}}