Sign in to app.speechify.com using your Speechify account credentials, preferably using a Chromium browser.

Open the file that you want to listen to.

Click on 'More' on the left side toolbar and click on the check boxes next to the content you want to skip. You can skip content such as headers, footers, brackets, braces, citations, parentheses, and URLs within the document.

You can also click on 'Skip All' to skip all content categories according to the list.

This feature will let the web app skip the content in your document, as per your preference.