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In Defence of DOM­Content­Loaded

CSS Wizardry

I never thought I’d write an article in defence of DOMContentLoaded , but here it is… For many, many years now, performance engineers have been making a concerted effort to move away from technical metrics such as Load , and toward more user-facing, UX metrics such as Speed Index or Largest Contentful Paint. Or are they…? View unabridged.

Metrics 326
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Dynatrace Application Security detects and blocks attacks automatically in real-time

Dynatrace

In today’s world, the speed of innovation is key to business success. WAFs protect the network perimeter and monitor, filter, or block HTTP traffic. A perfect OWASP benchmark score for injection attacks – 100% accuracy and zero false positives – impressively proves the precision of our approach. Dynatrace news.

Traffic 228
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2021 in review: It was a big year!

Speed Curve

Watch a demo video showing how to create custom charts and performance budgets for Web Vitals.). If you want to understand how people actually experience your site, then you need to monitor real users. We also added a "Performance 101" section that includes articles like: Synthetic vs. Real User Monitoring. for everyone.

Retail 52
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The average web page is 3MB. How much should we care?

Speed Curve

These numbers should not in any way even remotely be taken as a benchmark for your own site. In this graph, the steep rise of onload slightly hides the fact that Speed Index trends upward quite significantly – from 2393 (~2.4 If you're not already using SpeedCurve to monitor your site's performance, set up your free trial here.).

Metrics 80
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Front-End Performance Checklist 2021

Smashing Magazine

This guide has been kindly supported by our friends at LogRocket , a service that combines frontend performance monitoring , session replay, and product analytics to help you build better customer experiences. Note : If you use Page Speed Insights or Page Speed Insights API (no, it isn’t deprecated!), Vitaly Friedman.

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Front-End Performance Checklist 2020 [PDF, Apple Pages, MS Word]

Smashing Magazine

Testing And Monitoring. You need a business stakeholder buy-in, and to get it, you need to establish a case study, or a proof of concept using the Performance API on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. Getting Ready: Planning And Metrics. Setting Realistic Goals. Defining The Environment.