Dimedove provides a JavaScript widget installation that is easy to implement. Businesses simply add this code to their website: 
<dimedove-messenger agent-id="<agent_id>" publishable-key="<publishable_key>" />
<script
  src="https://unpkg.com/@dimedove/messenger@latest/dist/messenger.js"
  crossorigin="anonymous"
  async
></script>

​
Security

It is recommended for businesses to also define allowed origins which are whitelisted domains that are allowed to host the messenger. For more information, consult the Developer Guides page.