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How to use Server Timing to get backend transparency from your CDN

Speed Curve

Google recommends that TTFB be 800ms at the 75th percentile. Looking at the industry benchmarks for US retailers , four well-known sites have backend times that are approaching – or well beyond – that threshold. Definitely worth a read! For the purpose of this post, let's say that 500ms backend time is 'good enough'.

Servers 57
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An Opinionated Guide to Performance Budgets

Speed Curve

Largest Contentful Paint (LCP) is one of Google's Core Web Vitals , so it's been getting a lot of attention lately. Cumulative Layout Shift (CLS) is another one of Google's Core Web vitals. The three metrics above – CLS, FID, and TBT – are all part of Google's Core Web Vitals. > Long Tasks (Synthetic and RUM).

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A simple, client-side approach to measuring Speed Index

Dean Hume

One of the metrics produced when you run a test using webpagetest.org is called Speed Index and it changed the way I thought about web performance. Speed Index is important because it goes a step further and measures how much of the "above-the-fold" content is visually complete until the web page has finished loading.

Speed 40
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A simple, client-side approach to measuring Speed Index

Dean Hume

One of the metrics produced when you run a test using webpagetest.org is called Speed Index and it changed the way I thought about web performance. Speed Index is important because it goes a step further and measures how much of the "above-the-fold" content is visually complete until the web page has finished loading.

Speed 40
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A simple, client-side approach to measuring Speed Index

Dean Hume

One of the metrics produced when you run a test using webpagetest.org is called Speed Index and it changed the way I thought about web performance. Speed Index is important because it goes a step further and measures how much of the "above-the-fold" content is visually complete until the web page has finished loading.

Speed 40
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Cumulative Layout Shift: What it measures, when it works (and doesn't), and how to use it

Speed Curve

Back in May, we shared that SpeedCurve supports Google's Core Web Vitals in both our synthetic monitoring and LUX real user monitoring tools. According to Google, pages should maintain a CLS score of less than 0.1 recommended by Google. It's definitely worth a read.). at the 75th percentile for mobile and desktop devices.

Retail 81
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Ten years of page bloat: What have we learned?

Speed Curve

How does page bloat affect other metrics, such as Google's Core Web Vitals? And if that already wasn’t enough, the number of images on a page has been linked to lower conversion rates on retail sites. Image size is another issue, as excessive image weight hurts your SEO ranking in Google Image Search. More on that later.).

Mobile 145