I use Slack in my browser. Whenever anyone in any of the channels I have types a message (to me or in general), the asterisk is added.

enter image description here

Is there a way to limit the asterisk appearing for messages only in the channel I'm in/channels I want so that I don't have to check as often?


2 Answers 2


You can mute a channel. Then you will no longer receive any notifications for that channel incl. the asterix for new messages.

To mute a channel open it, click on the cog and then choose "Mute XXX". enter image description here

  • Although muting a channel also means there's no indication whether anyone has been talking there. You won't see an asterisk, & the channel won't appear highlighted (white, at time of writing) indicating people have been talking. So basically there is no way to simultaneously not be pestered by an asterisk & also know if activity has happened at a glance, making muting of channels and disabling of notifications about as useful as leaving all channels or never opening Slack. This is actually inconsistent with direct messages, which do indicate activity even if you have muted them. Sep 15, 2020 at 20:26

I made a tampermonkey script for this: https://gist.github.com/rchernobelskiy/d8c71e6e1ebcdd22cf897ad28da875a3

Re-pasting here if easier:

// ==UserScript==
// @name         Slack tab title asterisk remover
// @namespace    http://roman.chernobelskiy/
// @version      0.1
// @description  Permanently keeps the asterisk out of slack's tab title.
// @author       Roman Chernobelskiy
// @match        https://app.slack.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    new MutationObserver(function() {
        if(document.title.indexOf('*') != -1) document.title = document.title.replace('*', '');
    }).observe(document.querySelector('title'), {
        subtree: true,
        characterData: true,
        childList: true

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