Smashing Magazine

APRIL 19, 2021

The Core Web Vitals are a set of three metrics designed to measure the “core” experience of whether a website feels fast or slow to the users, and so gives a good experience. In this post, I’m going to attempt to explain a bit more about what’s going on here and explain some of the nuances and misunderstandings of these tools.

Google 140

Google Metrics Mobile Analytics 140

Alex Russell

SEPTEMBER 20, 2020

Pre-publication gates were valuable when better answers weren't available, but commentators should update their priors to account for hardware and software progress of the past 13 years. Since day one, iOS has supported app affordances for websites with proprietary metadata , and Android has similar features. "Appiness"

Hardware 64

Hardware Mobile Programming Java 64

Alex Russell

JULY 14, 2021

Modern browsers like Chrome and Samsung Internet support a long list of features that make web apps more powerful and keep users safer. Hardware access APIs, notably: Geolocation. The confusion that reliably results is the consequence of an inversion of the power relationship between app and website. PWA Feature Detector.

Google 121

Google Mobile Engineering Internet 121

Smashing Magazine

AUGUST 22, 2021

This is because HTTP/3 and QUIC mainly help deal with the somewhat uncommon yet potentially high-impact problems that can arise on today’s Internet. On the Internet, however, we typically have a long series of connected pipes , some of which can be wider than others (leading to so-called bottlenecks at the narrowest links).

Performance 105

Performance Network Latency Servers 105

Alex Russell

JANUARY 30, 2024

JavaScript-Heavy # Since at least 2015, building JavaScript-first websites has been a predictably terrible idea, yet most of the sites I trace on a daily basis remain mired in script. [1] Emerging markets with high mobile internet use and dense populations can feature poor fixed-line broadband penetration compared with Western markets.

Performance 90

Performance Network Mobile Speed 90

Dotcom-Montior

JUNE 19, 2017

A series of GET requests from an in-house server can’t possibly replicate what actually happens when a website sees a sudden increase in users from all over the world. EveryStep currently offers a choice of over 42 browser emulations – everything from Chrome and Internet Explorer to iPhone, Google Nexus, and Samsung Galaxy.

Performance Testing 40

Performance Testing Testing Performance Virtualization 40

MachMetrics

JANUARY 23, 2020

You run a speed test on a website, and the results don’t match what you personally experience. We wanted to have control of the hardware that runs our tests and deliver consistent results. Of course, you still won’t see the same loading time every test , so let’s look at some of the reasons why.

Speed 62

Speed Testing Website Cache 62

Smashing Magazine

JANUARY 11, 2021

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the project until the final release of the website — what would that look like? In the case of Wikipedia's website, in 2020, globally, code execution has got 19% faster for Wikipedia users.

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

JANUARY 6, 2020

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Goal: Be at least 20% faster than your fastest competitor. Image source ).

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

JANUARY 7, 2019

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Webpack Fundamentals is a very comprehensive 4h course with Sean Larkin, released by FrontendMasters.

Performance 103

Performance Cache Metrics Network 103