The web messenger in Freshchat, also known as the conversations widget, is used to deliver a convenient and contextual conversational messaging experience for customers. 

You can hide the widget on certain pages by using the below code under the <BODY> tag.

Sample code:

window.fcWidgetMessengerConfig = {
config: {
hideChatButton: false,
<script src='//*****7/2*****4.js' chat='true'></script>

Note: To find the tracking code that you need to include before the  tag of the web pages you want to integrate, navigate to Admin Settings > Channels > Web Chat > Click Copy