Track page speed over time and get the data you need to optimize it. Key findings of the 2021 report: Popular extensions like Honey, Evernote Web Clipper, and Avira Browser Safety can have a significant negative impact on website speed On ad-heavy websites, ad blockers and privacy tools can greatly improve performance As the performance impact varies between different websites, five different page
Use the Performance panel to analyze your website's performance. Overview The Performance panel lets you record CPU performance profiles of your web applications. Analyze profiles to find potential performance bottlenecks and ways you can optimize resource use. Use the Performance panel to do the following: Record a performance profile. Change capture settings. Analyze a performance report. For a
When measuring real user performance engineers take to the account factors like device and network conditions. But there is one more factor, that is not in direct control - web extensions. They add additional scripts, DOM manipulations, and impact the user experience. Exthouse is a tool powered by Lighthouse that provides a report about web extension impact on web performance. It measures an exten
The developer tools I tested tend to do better than the general purpose tools. Usually they inject some code to detect the use of a certain technology, but it's not a massive JavaScript bundle. I separated out HN/Reddit Enhancement suite and WikiWand because they are meant to augment a particular website. You'd not expect them to change anything on other sites. This is true for HN and Reddit Enhan
Rich Tracing Choose what methods to trace and add custom data to each event. Track asynchronous flows and actions. Slick Visualization Smoothly dig through millions of events in an awesome UI. See patterns and understand your code like never before.
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