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Performance Game Changer: Browser Back/Forward Cache

Smashing Magazine

WebPageTest is one of the few web performance testing tools that actually tests a reload of the page using a primed HTTP Cache — most of the other tools just flag if your HTTP resources are not explicitly set to be cached. Back/Forward Cache Testing Tool. Or perhaps A/B test this?

Cache 91
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An Opinionated Guide to Performance Budgets

Speed Curve

That was before pages filled up with dozens (and sometimes hundreds) of analytics tags, tracking beacons, and other third parties that silently push out your total load time. read industry case studies, like those gathered on WPOstats.com. A good rule of thumb: Aim to be at least 20% faster than the competition.

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The State Of Mobile And Why Mobile Web Testing Matters

Smashing Magazine

After all, when we look at our analytics, we will hardly find any customers browsing our sites or apps with a mid-range device on a flaky 3G connection. While it might sound valuable to test on mobile devices, it might not be convincing enough to drive the management and entire organization towards mobile testing.

Mobile 133
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10 Steps to Prepare Your Website for High-Load Days: Are You Ready for Black Friday?

Rigor

Case studies abound. At a minimum, Optimal recommends that you have RUM, APM, synthetic, and load test tools set up, instrumented, and producing meaningful data. Traffic patterns outside of normal [RUM or Analytics]. The Cost of Site Failure During High-Load Days. Are they providing meaningful, actionable data?

Website 74
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Google PageSpeed Insights - Scoring 100/100 with WordPress

KeyCDN

Fonts are render-blocking as we discussed in our case study on web font performance. js|css|png|jpg|svg|jpeg|gif|ico)$ { expires 7d; add_header Cache-Control "public, no-transform";} Google Analytics Another issue we run into is with Google Analytics. Google has already said that they won't fix this.

Google 103
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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. Study common complaints coming into customer service and sales team, study analytics for high bounce rates and conversion drops.

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

Smashing Magazine

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. It will help you build up a company-tailored case study with real data. How to get there?