Script parallelization or SSR

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It takes expertise to perform JavaScript code audits, and it is not so simple to adopt Java Now let’s go and look at the Call Tree: Image 104 Call Tree is often more useful than Bottom-Up. The data is similar, but Call Tree will thematically group tasks into handy buckets like Evaluate Script (script execution). You can then click on a group, expand it and see the scripts and how long they took to load. 11% of the time was taken loading pubads_impl.jsm while 6% of the time was taken loading opus.js. I don’t know what those modules are (and you may not either), but this is where the optimization journey often begins. We can now take a step back to: Google these scripts and see if they are part of third-party libraries, what they do, and what the impact is. Consult the developer in terms of how these might be more intelligently deployed. Narrow the problem down to individual resources and look for alternatives.

Tackle the DB to Data deficit (or alternatively, fight for more resources/bandwidth, a strong hosting environment – if that is indeed required). Other tools for measuring and optimizing for Core Web Vitals If you managed to stick with me this far, congratulations. In terms of deep Core Web Vitals and page speed analysis, we only used: PageSpeed Insights Chrome DevTools (Performance tab) Yes, you really can be just that lean. However, there are other tools which may be of immense assistance to you: GTMetrix: Especially useful for its waterfall chart (requires a free account for waterfall), which you can learn how to read here. Don’t forget that GTMetrix will run unthrottled by default, giving overly favorable results.



Be sure to set it to an LTE connection. Google Search Console: If you set this up and verify your site, you can see lots of performance and usability data over time, including Core Web Vitals metrics across multiple pages (aggregated). Screaming Frog SEO Spider: This can be connected to the page speed API, to allow bulk fetching of Core Web Vitals Pass or Fail grades (for multiple pages). If you’re using the free page speed API, don’t hammer it in an unreasonable way Improving your page speed ratings used to be as simple as compressing and uploading some images.