title: How to freeze page manually, Page Lifecycle API
body: <p>I want to debug my page behavior in the <code>freeze</code> state by the <a href="https://developers.google.com/web/updates/2018/07/page-lifecycle-api" rel="nofollow noreferrer">Page Lifecycle API post</a> from the <code>chrome://discards</code> URL. But I can't find [Freeze] button on <a href="https://i.stack.imgur.com/iKxgr.png" rel="nofollow noreferrer">this page</a></p>
  <p>How I can emulate the <code>frozen</code> state of the page and why [Freeze] button not displayed on <code>chrome://discards</code>?</p>