Dean Hume

SEPTEMBER 21, 2016

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

Speed Analytics Google Retail 40

Dean Hume

SEPTEMBER 21, 2016

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

Speed Analytics Google Retail 40

Dean Hume

SEPTEMBER 21, 2016

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

Speed Analytics Google Retail 40

Speed Curve

FEBRUARY 15, 2021

In an ideal world, pages served to mobile devices should be under 1 MB – and definitely not more than 2 MB – but I often see pages in excess of 5 MB. > Speed Index (Synthetic). Speed Index was an important metric when it first came out several years ago. Just FYI, I had to look up that definition.

Performance 134

Performance Metrics Benchmarking Google 134

Speed Curve

MAY 1, 2023

It's easier to make a fast website than it is to keep a website fast. If you've invested countless hours in speeding up your pages, but you're not using performance budgets to prevent regressions, you could be at risk of wasting all your efforts. Media sites are particularly prone to this issue.

Performance 98

Performance Metrics Media Google 98

Speed Curve

MARCH 7, 2022

And if that already wasn’t enough, the number of images on a page has been linked to lower conversion rates on retail sites. Having said that, looking at data over the past ten years, it's safe to make the observation that pages are definitely trending bigger. In other words, images comprised almost 75% of the total page weight.

Mobile 145

Mobile Benchmarking Google Metrics 145

CSS - Tricks

AUGUST 18, 2020

Yet, this criticism of React isn’t completely unwarranted: React and ReactDOM total about 120 KiB of minified JavaScript, which definitely contributes to slow startup time. Most developers—I hope —aren’t going to rely solely on React to drive such simple behavior for just one thing on their website. Startup time.

Performance 101

Performance Mobile Servers Code 101