How Our Team Solves Non Deferred Non Critical Javascript

In our experience, this means JavaScript files that aren't required for initial page render or above the fold interactivity are still loaded as blocking <script> tags rather than with defer, async, or dynamic/lazy loading. It typically happens when all scripts are bundled together or loaded in the head without regard for what's actually needed immediately. Blocking script downloads and execution delay HTML parsing and page rendering, which increases Time to Interactive and hurts Core Web Vitals metrics tied to responsiveness.