Alex Russell

JANUARY 30, 2024

HTML, CSS, images, and fonts can all be parsed and run at near wire speeds on low-end hardware, but JavaScript is at least three times more expensive, byte-for-byte. India's speed test medians are moving quickly, but variance is orders-of-magnitude wide, with 5G penetration below 25% in the most populous areas.

Performance 90

Performance Network Mobile Speed 90

Smashing Magazine

JANUARY 11, 2021

Assets Optimizations Brotli, AVIF, WebP, responsive images, AV1, adaptive media loding, video compression, web fonts, Google fonts. Run performance experiments and measure outcomes — both on mobile and on desktop (for example, with Google Analytics ). Adjust the argument depending on the group of stakeholders you are speaking to.

Performance 145

Performance Cache Media Metrics 145

Alex Russell

MARCH 6, 2021

India became a 4G-centric market sometime in 2018. Hardware Past As Performance Prologue. Regardless, the overall story for hardware progress remains grim, particularly when we recall how long device replacement cycles are: Tap for a larger version. 5G looks set to continue a bumpy rollout for the next half-decade. Mind The Gap.

Performance 124

Performance Network Cache Metrics 124

Smashing Magazine

JANUARY 6, 2020

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. Adjust the argument depending on the group of stakeholders you are speaking to. Large preview ). Large preview ).

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

JANUARY 7, 2019

You need a business stakeholder buy-in, and to get it, you need to establish a case study on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. Note : If you use Page Speed Insights (no, it isn’t deprecated), you can get CrUX performance data for specific pages instead of just the aggregates.

Performance 104

Performance Cache Network Metrics 104

Alex Russell

OCTOBER 22, 2017

JavaScript is the single most expensive part of any page in ways that are a function of both network capacity and device speed. Our metrics at Google show a conflicted picture (which I’m working to get to clarity on). Their powers combined are going to fundamentally transform the optimal page-load for 2018 and beyond.

Performance 68

Performance Benchmarking Network Mobile 68

Smashing Magazine

JANUARY 21, 2021

The reasons for it are numerous, but the most important one is a huge difference in network conditions and device hardware across the world. Much of this data related to Core Web Vitals which Google has announced back in 2020, and which also contribute to and are exposed in Lighthouse. Large preview ). KB, Brotlified).

Performance 145

Performance Cache Mobile Network 145