In this Blog Post, I have avoided using Logo and Agent Name in the Salesforce Embedded Service Chat Header.

To remove Logo and Agent Name in the Salesforce Embedded Service Chat Header, I have used Lightning Web Component which extends lightningSnapin__ChatHeader to override the Chat Header.

Sample Code:

HTML:

<template>
    <h2 aria-live="polite">
        Chat
    </h2>
    <button onclick={minimize} aria-live="off">
        <lightning-icon icon-name="utility:minimize_window"></lightning-icon>
    </button>
    <button onclick={close} aria-live="off">
        <lightning-icon icon-name="utility:close"></lightning-icon>
    </button>
</template>

JavaScript:

import BaseChatHeader from 'lightningsnapin/baseChatHeader';

export default class ChatHeader extends BaseChatHeader { }

CSS:

:host {
    width: 100%;
    max-width: 100%;
    display: flex;
    align-items: center;
    box-sizing: border-box;
    position: relative;
    padding: 0 14px;
    height: 50px;
    max-height: 50px;
    background-color: black;
}

img {
    margin-right: 4px;
    max-height: 40px;
    max-width: 40px;
}

h2 {
    margin: 0;
    text-align: initial;
    align-self: center;
    flex-grow: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: lighter;
    font-size: inherit;
    color: white;
}

button {
    background: none;
    border: none;
    height: 32px;
    min-height: 32px;
    width: 32px;
    min-width: 32px;
}

button:hover:before {
    content: " ";
    position: absolute;
    top: 9px;
    width: 32px;
    height: 32px;
    background-color: #fff;
    opacity: .2;
    border-radius: 4px;
    box-sizing: border-box;
    pointer-events: none;
}

button.minimizeButton:hover:before {
    right: 46px;
}

button.closeButton:hover:before {
    right: 14px;
}

lightning-icon {
    fill: white;
    padding-left: 8px;
}

JS-meta.xml:

<?xml version="1.0" encoding="UTF-8"?>
<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata">
    <apiVersion>55.0</apiVersion>
    <isExposed>true</isExposed>
    <targets>
        <target>lightningSnapin__ChatHeader</target>
    </targets>
</LightningComponentBundle>

Embedded Service Deployment Chat Configuration:

Output: