Slack Silence Mode

Disables all websocket connections in Slack,

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         Slack Silence Mode
// @namespace    http://tampermonkey.net/
// @version      2025-02-12
// @description  Disables all websocket connections in Slack,
// @author       You
// @match        https://app.slack.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=slack.com
// @grant        none
// @license     MIT
// ==/UserScript==

(function() {
 'use strict';

    // Store the original WebSocket constructor
    const OriginalWebSocket = window.WebSocket;

    window.WebSocket = function(url, protocols) {
        console.warn("Blocked WebSocket connection:", url);

        // Prevent the connection by returning a fake WebSocket object
        return {
            readyState: 3, // CLOSED state
            close: function() {},
            send: function() {},
            addEventListener: function() {},
            removeEventListener: function() {},
            dispatchEvent: function() { return false; }
        };
    };

    // If sites restore WebSocket, block it again
    Object.defineProperty(window, 'WebSocket', {
        configurable: false,
        enumerable: false,
        writable: false
    });

})();