How to Solve: “Avoid an Excessive DOM Size” in WordPress
Google Lighthouse’s ‘Avoid an excessive DOM size’ warning is a performance metric you’ll want to look out for. The Document Object Model (DOM) aspect of this lets scripts access and manipulate the elements of your site. This includes your HTML and CSS. However, a large DOM size can cause performance issues, maintenance problems, and much more. First, let’s help you understand what it means.