Question: If your site has consistently poor Total Blocking Time scores, which approach should you take to improve this metric?
- Remove all videos from your site that are 1MB or larger
- Optimize images and use srcset and sizes attributes to provide the browser multiple image options depending on the user’s device
- Self-host fonts instead of fetching them from a third party
- Reduce the total amount of JavaScript loaded on your site while also efficiently loading the site’s JavaScript
The answer(s) to the question is highlighted in the BOLD text above. You can also find more questions and answers related to the exams on the “HubSpot CMS for Developers II” page.
