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@kdzwinel Cool stuff. Looks similar to what the PageSpeed Insights API (developers.google.com/speed/docs/insights/v4/reference/pagespeedapi/runpagespeed#request-body) would give you. Try navigating with the right arrow keyboard key to the UX section of this deck: pagespeed-inslides.herokuapp.com/slides?url=https%3A%2F%2Fm.vk.com&strategy=mobile&screenshot=true&locale=en#1 (takes a bit to load, need to be on desktop).