The best thing about this tool is that it gives you great insight into how to make an effective page load faster so that users can have their desired experience without being held up by loading times.
I am also able to get insights from my pages speed in order to optimize them for better results as well! It would be nice if they had more detailed tutorials/guides with step-by-step instructions of what features are available when using critical css. Also maybe some examples or code snippets could help give us ideas of new ways we might use these tools? Just try out different things until you find something useful and implement those changes onto your website. We've been looking at our websites' loads time over last few months before implementing any recommendations which has helped identify areas where improvements may need to happen such as images taking longer than necessary to download etc.