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Average Page Load Time in 2021

MachMetrics

Website performance & speed plays a major role in the success of an online business. High-performing fast sites attract and preserve users better than low-performing ones. Importance of page loading speed – Google checks your website load time and they like it as fast with a better user experience.

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Web Performance Bookshelf

Rigor

Yet, we wanted to put together our list of the top web performance books for anyone who cares about speed of the web and would like to explore the timeline of web performance engineering milestones over nearly two decades through the lens of published books. Web Performance In Action. Designing for Performance.

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How Partytown Eliminates Website Bloat From Third-Party Apps

Smashing Magazine

And slow websites are, in a way, discrimination: The majority of the world’s population don’t have access to high-speed Internet or fast CPUs. Even if your website is designed with usability in mind, these factors impede users from fully benefiting from the website’s features. The Architecture Behind Partytown.

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The 5 Most Underrated WebPageTest Features

MachMetrics

WebPageTest is one of the best website speed auditing services for any designer or developer concerned with site speed (which should be all of them). We won’t get too deep into search engine optimization, but speed optimization is a huge part of what sets your site apart from others. WebPageTest Scripting.

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Don’t Sink Your Website With Third Parties

Smashing Magazine

These services use requests to external hosts (not servers you control) to deliver JavaScript framework libraries, custom fonts, advertising content, marketing analytics trackers, and more. There are two big questions: How do you quantify the impact that these third-party requests have on website performance?

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An In-Depth Guide To Measuring Core Web Vitals

Smashing Magazine

LCP is supposed to measure loading performance and is a good proxy for all the old metrics we in the performance community used to use (i.e. Time to First Byte (TTFB), DOM Content Loaded, Start Render, Speed Index) — but from the experience of the user. CrUX LCP dashboard ( Large preview ). CrUX is Chrome only.

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Improving JavaScript Bundle Performance With Code-Splitting

Smashing Magazine

It’s an admin page that has an overview of all user activity, accounts, and analytics (admin page). Like any file referenced and used on a website, it first needs to be downloaded from a server. How quickly the file is downloaded depends on the connection speed and the size of the file itself. A single private page.

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